



苯并噻唑相关标准参考信息
GB/T 31332-2014 硫化促进剂 N-环己基-2-苯并噻唑次磺酰胺(CBS)
简介:本标准规定了硫化促进剂N-环己基-2-苯并噻唑次磺酰胺(简称硫化促进剂CBS)的要求、试验方法、检验规则、标志、包装、运输和贮存。本标准适用于以硫化促进剂2-巯基苯并噻唑(简称硫化促进剂MBT)和环己胺为主要原料制得的硫化促进剂CBS。
信息:ICS:71.100.40 CCS:G71 发布:2014-12-05 实施:2015-06-01
ASTM D7558-09(2014) 天然胶乳和丁腈手套中可萃取化学二烷基二硫代氨基甲酸酯、硫脲和巯基苯并噻唑促进剂定量的比色/分光光度法的标准试验方法
简介:
信息:ICS:83.040.20 CCS: 发布:2014-11-01 实施:
ASTM D1991-05 橡胶化学品的标准试验方法&8212;2-巯基苯并噻唑(MBT)和8212;化验
简介:
信息:ICS:83.040.20 CCS: 发布:2005-10-01 实施:
GB/T 30910-2014 胶鞋 2-巯基苯并噻唑、二硫化二苯并噻唑迁移量的测定
简介:本标准规定了用液相色谱法测定胶鞋中2-巯基苯并噻唑、二硫化二苯并噻唑向汗液迁移量的方法。本标准适用于胶鞋用橡胶材料中2-巯基苯并噻唑、二硫化二苯并噻唑因与汗液接触而迁移出的量的检测。
信息:ICS:61.060 CCS:Y78 发布:2014-07-08 实施:2014-12-01
ASTM D5051-06(2012) 橡胶复合材料的标准试验方法—苯并噻唑二硫化物(MBTS)—化验
简介:
信息:ICS:83.060 CCS: 发布:2012-05-01 实施:
ASTM D4936-05 巯基苯并噻唑亚磺酰胺通过还原/滴定法测定的标准测试方法
简介:
信息:ICS:71.080.30 CCS: 发布:2005-10-01 实施:
T/SDHCIA 031-2022 头孢类医药中间体副产 2-巯基苯并噻唑(MBT)
简介:本文件规定了头孢类医药中间体副产2-巯基苯并噻唑(MBT)的要求、试验方法、检验规则、标志、包装、运输和贮存。本文件适用于头孢类药物生产的医药中间体曲松等生产过程中,产生的副产2-巯基苯并噻唑(MBT)。在生产过程中使用含S-(2-苯并噻唑)结构的活性酯经酰化,分离、精制后制得。
信息:ICS:71.100.40 CCS:C266 发布:2022-10-27 实施:2022-10-28
ASTM D4934-02(2012) 橡胶复合材料的标准试验方法:2-苯并噻唑亚磺酰胺加速剂
简介:
信息:ICS:83.040.20 CCS: 发布:2012-05-01 实施:
ASTM D1991-2005(2010) 橡胶化学试验方法 8212;2- 二巯基苯并噻唑(MBT)8212;化验用标准试验方法
简介:MBT is commonly used as an accelerator for rubber and latex vulcanization. The purity of MBT may be of importance in predicting performance in rubber compounds and this test method is designed to assess the purity of MBT. This test method may be used as a quality control tool and for research and development work.1.1 This test method covers a procedure for the assay of 2-mercaptobenzothiazole (MBT). It is based on a potentiometric titration of MBT with sodium hydroxide. 1.2 The assay is determined as percent by mass. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.040.20 CCS:G34 发布:2005 实施:
ISO 21490-2022 橡胶和橡胶制品.用高效液相色谱法(HPLC)测定2-巯基苯并噻唑含量
简介:
信息:ICS:83.060 CCS: 发布:2022-01-21 实施:
ASTM D5044-06(2012) 橡胶复合材料的标准试验方法—苯并噻唑二硫化物(MBTS)中的游离2-巯基苯并噻唑(MBT)
简介:
信息:ICS:83.060 CCS: 发布:2012-05-01 实施:
ASTM D4936-2005 用还原/滴定法对硫基苯并噻唑亚磺酰胺鉴定的标准试验方法
简介:This test method is designed to assess the purity of 2-mercaptobenzothiazole sulfenamide accelerators. These products are used in combination with sulfur for the vulcanization of rubber. The test method is suitable for assessing product specifications in that the property it measures is related to product performance. Since it is the primary property for comparison of product quality at different production facilities, good interlaboratory accuracy and precision is required. Based on past experience, two significant sources of error in this test method are: (1) incomplete reduction and (2) titration end point assessment. Problems in these areas can be avoided by closely following the procedure.1.1 This test method covers the determination of assay on mercaptobenzothiazole (MBT) sulfenamides. It is based on a titration of the basic amines liberated upon reduction of the sulfenamides with hydrogen sulfide gas (H2S), or 2-mercaptobenzothiazole.1.2 Any free amine (HNR2) or weak acid salts of the corresponding amine (HXHNR2) are titrated prior to reduction. This titer is used to calculate percent basic impurity (as free amine) in the sample.1.3 With the indicated modifications, this test method is applicable to all MBT sulfenamides, that is, N-cyclohexyl-2-benzothiazolesulfenamide (CBS), N,N-diisopropyl-2-benzothiazyl sulfenamide (DIBS), 2 (morpholinothio) benzothiazole (MBS), N,N-dicylohexyl-2-benzothiazyl sulfenamide (DCBS), N-tert-butyl-benzothiazole-sulfenamide (TBBS), and 4-morpholinyl-2-benzothiazyl disulfide (MBSS).1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section .
信息:ICS: CCS:A43 发布:2005 实施:
ASTM D5051-06(2021)e1 橡胶复合材料苯并噻唑二硫化物(MBTS)的标准试验方法.测定
简介:
信息:ICS:83.060 CCS: 发布:2021-11-01 实施:
ASTM D4936-10 巯基苯并噻唑亚磺酰胺通过还原/滴定法测定的标准测试方法
简介:
信息:ICS:71.080.30 CCS: 发布:2010-12-01 实施:
ASTM D1991-2005 橡胶化学制品的标准试验方法.二巯基苯并噻唑(MBT).化验
简介:MBT is commonly used as an accelerator for rubber and latex vulcanization. The purity of MBT may be of importance in predicting performance in rubber compounds and this test method is designed to assess the purity of MBT. This test method may be used as a quality control tool and for research and development work.1.1 This test method covers a procedure for the assay of 2-mercaptobenzothiazole (MBT). It is based on a potentiometric titration of MBT with sodium hydroxide. 1.2 The assay is determined as percent by mass. 1.3 The values given in SI units are to be regarded as standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.040.20 (Rubber compounding ingredients) CCS:G34 发布:2005 实施:
ASTM D4934-02(2021) 橡胶复合材料的标准试验方法:2-苯并噻唑磺酰胺促进剂不溶物
简介:
信息:ICS:83.040.20 CCS: 发布:2021-11-01 实施:
ASTM D1991-05(2010) 橡胶化学品的标准试验方法&8212;2-巯基苯并噻唑(MBT)和8212;化验
简介:
信息:ICS:83.040.20 CCS: 发布:2010-06-01 实施:
HG/T 3518-2003 工业循环冷却水中巯基苯并噻唑测定方法
简介:本标准规定了工业循环冷却水中巯基苯并噻唑的测定,测定范围为0.2mg/L~1mg/L。本标准适用于磷系循环冷却水和磷系复合抑制剂中巯基苯并噻唑的测定。
信息:ICS:71.040.40 CCS:G76 发布:2004-01-09 实施:2004-05-01
ASTM D5044-06(2021) 苯并噻唑二硫化物(MBTS)中不含2-巯基苯并噻唑(MBT)的橡胶复合材料的标准试验方法
简介:
信息:ICS:83.060 CCS: 发布:2021-11-01 实施:
ASTM D4936-2010(2015) 采用还原/滴定法进行巯基苯并噻唑亚磺酰胺鉴定的标准试验方法
简介:5.1x00a0;This test method is designed to assess the purity of 2-mercaptobenzothiazole sulfenamide accelerators. These products are used in combination with sulfur for the vulcanization of rubber. 5.2x00a0;The test method is suitable for assessing product specifications in that the property it measures is related to product performance. Since it is the primary property for comparison of product quality at different production facilities, good interlaboratory accuracy and precision is required. 5.3x00a0;Based on past experience, two significant sources of error in this test method are: (1) incomplete reduction and (2) titration end point assessment. Problems in these areas can be avoided by closely following the procedure. 1.1x00a0;This test method covers the determination of assay on mercaptobenzothiazole (MBT) sulfenamides. It is based on a titration of the basic amines liberated upon reduction of the sulfenamides with hydrogen sulfide gas (H2S)2 ,3 or 2-mercaptobenzothiazole. 1.2x00a0;Any free amine (HNR2) or weak acid salts of the corresponding amine (HXx00b7;HNR2) are titrated prior to reduction. This titer is used to calculate percent basic impurity (as free amine) in the sample. 1.3x00a0;With the indicated modifications, this test method is applicable to all MBT sulfenamides, that is, N-cyclohexyl-2-benzothiazolesulfenamide (CBS), N,N-diisopropyl-2-benzothiazyl sulfenamide (DIBS), 2 (morpholinothio) benzothiazole (MBS), N,N-dicylohexyl-2-benzothiazyl sulfenamide (DCBS), N-tert-butyl-benzothiazole-sulfenamide (TBBS), and 4-morpholinyl-2-benzothiazyl disulfide (MBSS). 1.4x00a0;The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.
信息:ICS:71.080.30 CCS: 发布:2010 实施:
ASTM D4934-02 橡胶复合材料的标准试验方法:2-苯并噻唑磺酰胺促进剂&8212;不溶物
简介:
信息:ICS:83.040.20 CCS: 发布:2002-12-10 实施:
ASTM D8411-21 橡胶复合材料的标准试验方法橡胶中2-巯基苯并噻唑(MBT)的测定
简介:
信息:ICS:83.040.20 CCS: 发布:2021-10-01 实施:
ASTM D4936-2010 用还原法/滴定法鉴定巯基苯并噻唑亚磺酰胺的标准试验方法
简介:This test method is designed to assess the purity of 2-mercaptobenzothiazole sulfenamide accelerators. These products are used in combination with sulfur for the vulcanization of rubber. The test method is suitable for assessing product specifications in that the property it measures is related to product performance. Since it is the primary property for comparison of product quality at different production facilities, good interlaboratory accuracy and precision is required. Based on past experience, two significant sources of error in this test method are: (1) incomplete reduction and (2) titration end point assessment. Problems in these areas can be avoided by closely following the procedure.1.1 This test method covers the determination of assay on mercaptobenzothiazole (MBT) sulfenamides. It is based on a titration of the basic amines liberated upon reduction of the sulfenamides with hydrogen sulfide gas (H2S) , or 2-mercaptobenzothiazole. 1.2 Any free amine (HNR2) or weak acid salts of the corresponding amine (HXx00B7;HNR2) are titrated prior to reduction. This titer is used to calculate percent basic impurity (as free amine) in the sample. 1.3 With the indicated modifications, this test method is applicable to all MBT sulfenamides, that is, N-cyclohexyl-2-benzothiazolesulfenamide (CBS), N,N-diisopropyl-2-benzothiazyl sulfenamide (DIBS), 2 (morpholinothio) benzothiazole (MBS), N,N-dicylohexyl-2-benzothiazyl sulfenamide (DCBS), N-tert-butyl-benzothiazole-sulfenamide (TBBS), and 4-morpholinyl-2-benzothiazyl disulfide (MBSS). 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.
信息:ICS:71.080.30 (Organic nitrogen compounds) CCS:A43;G16 发布:2010 实施:
ASTM D5044-02 橡胶化学品的标准试验方法.苯并噻唑二硫化物中不含2-巯基苯并噻唑(MBT)
简介:
信息:ICS:83.060 CCS: 发布:2002-06-10 实施:
T/CPCIF 0067-2020 橡胶硫化促进剂 2-巯基苯并噻唑(MBT)副产
简介:项目 指标外观 灰黑色至黑色颗粒或片状软化点,℃ 65~105密度,g/cm3 1.2~1.7灰分,w/%≤ 3.0加热减量,w/%≤ 0.5硫含量,w/% 35~45苯胺含量,w/%< 2.0
信息:ICS:71.100.40 CCS:C291 发布:2020-11-10 实施:2020-12-01
ASTM D7558-09 天然胶乳和丁腈手套中可萃取化学二烷基二硫代氨基甲酸酯、硫脲和巯基苯并噻唑促进剂定量的比色/分光光度法的标准试验方法
简介:
信息:ICS:83.040.20 CCS: 发布:2009-07-01 实施:
ASTM D5051-02 橡胶化学品的标准试验方法.苯并噻唑二硫化物(MBTS).测定
简介:
信息:ICS:83.060 CCS: 发布:2002-06-10 实施:
ASTM D4936-10(2019) 巯基苯并噻唑亚磺酰胺通过还原/滴定法测定的标准测试方法
简介:
信息:ICS:71.080.30 CCS: 发布:2019-12-01 实施:
ASTM D7558-2009(2014) 对天然胶乳和腈类手套中的可萃取二烷二硫胺甲酸盐, 秋兰姆和巯基苯并噻唑加速剂进行定量的比色测定/分光光度测定程序的标准试验方法
简介:5.1x00a0; Dialkyldithiocarbamates (DTCs), benzothiazoles, and thiurams are often used as vulcanization accelerators in NRL products. Zinc DTC accelerators are added either directly or are formed in situ during the vulcanization process via reaction between a thiuram(s) and zinc oxide. DTCs, benzothiazoles, and thiurams have been detected in leachates from medical devices made of rubber such as gloves. Studies have shown these chemicals can cause allergic contact dermatitis. A simple selective method to monitor rubber accelerator levels in rubber extracts would be useful for quality control, product screening and research. 5.2x00a0;This colorimetric assay measures dialkyldithiocarbamates, including zinc dialkyldithiocarbamates (ZDTC), mercaptobenzothiazole (MBT) and thiurams as a total thiol vulcanization accelerator level in rubber products. A UV spectrophotometer with detection at 320 nm is used to measure the ZDTC, mercaptobenzothiazole and thiurams. Sample extracts diluted at 1:20 prior to measurement on the spectrophotometer is usually sufficient to quantify the residual accelerator level from most commercially available rubber gloves; however, sample dilution can be adjusted (from neat extract to > 1:20 dilution) based on analytical needs. Thiurams and ZDTCs complex with cobalt turning the extract to a concentration-dependent shade of green. ZDTCs reacts quickly while thiurams react very slowly (requiring a heat catalyst). Mercaptobenzothiazole does not complex to Co(III), however, it absorbs strongly at 320 nm. It can be distinguished from both ZDTCs and thiurams by its strong absorbance at 320 nm without the cobalt dependent visible green color. Cobalt complexed thiurams and ZDTCs, but not MBT, also have and absorbance at 370 nm (2). 1.1x00a0;This test method is designed to quantify the amount of total extractable accelerators in natural rubber latex (NRL) and nitrile gloves. Three common classes of rubber accelerators, the mercaptobenzothiazole (MBT), thiuram, and thiocarbamate type compounds can be detected and quantified by this method. If the specific rubber accelerator(s) present in the glove material is not known, quantification is based on zinc dibutyldithiocarbamate (ZDBC) equivalents. This method will not detect all potential rubber accelerators, including mercaptobenzothiazole disulfide, dimorpholine, thioureas and diphenyl diamine. 1.2x00a0;For the purpose of this test method, the range of chemical accelerator measurement is based on the limit of detection (LOD) established in the performing laboratory. 1.3x00a0;This test method should be performed by experienced analysts or under the supervision of those experienced in the use of spectroscopy and working with organic solvents. 1.4x00a0;This test method has not been validated for measurement of long chain dithiocarbamates or accelerators from other rubber products, such as lubricated condoms (1).2 Although this assay has been reported in the literature for the evaluation of accelerator levels in condoms, further validation for accelerator measurement from other rubber products is required by the testing laborator......
信息:ICS:83.040.20 CCS: 发布:2009 实施:
ASTM D5051-2002 橡胶化学制品苯并噻唑基二硫化物(MBTS)的标准试验方法.分析
简介:1.1 This test method describes the determination of assay of benzothiazyl disulfide (MBTS). It is based on a titration of free iodine liberated upon reduction of MBTS, with potassium iodide (KI) in acid medium. 1.2 The assay is determined as mass percent. 1.3 Free 2-mercaptobenzothiazole (MBT) content is not determined. 1.4 The values stated in SI units are to be regarded as the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:2002 实施:
ASTM D1991-15(2019) 橡胶化学品的标准试验方法&x2014;2-巯基苯并噻唑(MBT)和x2014;化验
简介:
信息:ICS:83.040.20 CCS: 发布:2019-12-01 实施:
ASTM D7558-2009 对天然胶乳和腈类手套中的可萃取二烷二硫胺甲酸盐,秋兰姆和巯基苯并噻唑加速剂进行定量的比色测定/分光光度测定程序的标准试验方法
简介:nbsp;nbsp;nbsp;Dialkyldithiocarbamates (DTCs), benzothiazoles, and thiurams are often used as vulcanization accelerators in NRL products. Zinc DTC accelerators are added either directly or are formed in situ during the vulcanization process via reaction between a thiuram(s) and zinc oxide. DTCs, benzothiazoles, and thiurams have been detected in leachates from medical devices made of rubber such as gloves. Studies have shown these chemicals can cause allergic contact dermatitis. A simple selective method to monitor rubber accelerator levels in rubber extracts would be useful for quality control, product screening and research. This colorimetric assay measures dialkyldithiocarbamates, including zinc dialkyldithiocarbamates (ZDTC), mercaptobenzothiazole (MBT) and thiurams as a total thiol vulcanization accelerator level in rubber products. A UV spectrophotometer with detection at 320 nm is used to measure the ZDTC, mercaptobenzothiazole and thiurams. Sample extracts diluted at 1:20 prior to measurement on the spectrophotometer is usually sufficient to quantify the residual accelerator level from most commercially available rubber gloves; however, sample dilution can be adjusted (from neat extract to > 1:20 dilution) based on analytical needs. Thiurams and ZDTCs complex with cobalt turning the extract to a concentration-dependent shade of green. ZDTCs reacts quickly while thiurams react very slowly (requiring a heat catalyst). Mercaptobenzothiazole does not complex to Co(III), however, it absorbs strongly at 320 nm. It can be distinguished from both ZDTCs and thiurams by its strong absorbance at 320 nm without the cobalt dependent visible green color. Cobalt complexed thiurams and ZDTCs, but not MBT, also have and absorbance at 370 nm (2).1.1 This test method is designed to quantify the amount of total extractable accelerators in natural rubber latex (NRL) and nitrile gloves. Three common classes of rubber accelerators, the mercaptobenzothiazole (MBT), thiuram, and thiocarbamate type compounds can be detected and quantified by this method. If the specific rubber accelerator(s) present in the glove material is not known, quantification is based on zinc dibutyldithiocarbamate (ZDBC) equivalents. This method will not detect all potential rubber accelerators, including mercaptobenzothiazole disulfide, dimorpholine, thioureas and diphenyl diamine. 1.2 For the purpose of this test method, the range of chemical accelerator measurement is based on the limit of detection (LOD) established in the performing laboratory. 1.3 This test method should be performed by experienced analysts or under the supervision of those experienced in the use of spectroscopy and working with organic solvents. 1.4 This test method has not been validated for measurement of long chain dithiocarbamates or accelerators from other rubber products, such as lubricated condoms (1). Although this assay has been reported in the literature for the evaluation of accelerator levels in condoms, further validation for accelerator measurement from other rubber products is required by the testing laboratory prior to use. 1.5 This test method is not designed to evaluate the potential of rubber materials to induce or elicit Type IV skin sensitization reactions (for Type IV skin sensitization reactions see Test Method D 6355). Total extractable accelerator content does not reflect bioavailablity of individual accelerators that are detected and measured by this method. This test method should be used to test and measure the total residual chemical accelerator level in NRL and nitrile gloves under controlled laboratory conditions, and should not be used to describe, appraise, or assess the hazard or risk of these materials or products under actual in-use conditions.
信息:ICS:83.040.20 (Rubber compounding ingredients) CCS:G40 发布:2009 实施:
ASTM D4934-2002(2006) 橡胶合成材料的标准试验方法:2-苯并噻唑基亚磺酰胺催化剂.不溶解性
简介:Sulfenamides can degrade in chemical purity and functional performance, usually characterized by a drop in assay, a release of free amine, and an increase in insolubles. This test method may be used as an indication of such degradation. Since MBTS (mercaptobenzothiazole disulfide) is a primary degradation product of sulfenamides, the determination of MBTS is a means of assessing possible degradation of sulfenamides. Insolubles are a means of mercaptobenzothiazyl disulfide (MBTS) content of the sulfenamide; MBTS is a primary degradation product of sulfenamides. Amine salts of mercaptobenzothiazole (MBT) may also be insoluble. However, certain soluble species may also be generated during sulfenamide degradation. Consequently, insolubles are not an absolute measure of purity and can actually decrease with sulfenamide degradation.1.1 This test method covers a general procedure for the determination of insoluble impurities of sulfenamides in suitable organic solvents.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.040.20 (Rubber compounding ingredients) CCS:G34 发布:2002 实施:
ASTM D7558-09(2019) 天然胶乳和丁腈手套中可萃取化学二烷基二硫代氨基甲酸酯、硫脲和巯基苯并噻唑促进剂定量的比色/分光光度法的标准试验方法
简介:
信息:ICS:83.040.20 CCS: 发布:2019-05-01 实施:
ASTM D5044-06 橡胶复合材料的标准试验方法&8212;苯并噻唑二硫化物(MBTS)中的游离2-巯基苯并噻唑(MBT)
简介:
信息:ICS:83.060 CCS: 发布:2006-10-01 实施:
ASTM D4934-2002 橡胶合成材料的标准试验方法:2-苯并噻唑基亚磺酰胺催化剂.不溶解性
简介:1.1 This test method covers a general procedure for the determination of insoluble impurities of sulfenamides in suitable organic solvents.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.040.20 (Rubber compounding ingredients) CCS:G34 发布:2002 实施:
HG/T 5257-2017 硫化促进剂 N-叔丁基-双(2-苯并噻唑)次磺酰胺(TBSI)
简介:
信息:ICS:83.040.20 CCS:G71 发布:2017-11-07 实施:2018-04-01
ASTM D5051-06 橡胶复合材料的标准试验方法&8212;苯并噻唑二硫化物(MBTS)和"8212,;化验
简介:
信息:ICS:83.060 CCS: 发布:2006-10-01 实施:
ASTM D4934-2002(2012) 橡胶配料的标准试验方法:2-苯并噻唑基亚磺酰胺促进剂.不溶性
简介:Sulfenamides can degrade in chemical purity and functional performance, usually characterized by a drop in assay, a release of free amine, and an increase in insolubles. This test method may be used as an indication of such degradation. Since MBTS (mercaptobenzothiazole disulfide) is a primary degradation product of sulfenamides, the determination of MBTS is a means of assessing possible degradation of sulfenamides. Insolubles are a means of mercaptobenzothiazyl disulfide (MBTS) content of the sulfenamide; MBTS is a primary degradation product of sulfenamides. Amine salts of mercaptobenzothiazole (MBT) may also be insoluble. However, certain soluble species may also be generated during sulfenamide degradation. Consequently, insolubles are not an absolute measure of purity and can actually decrease with sulfenamide degradation.1.1 This test method covers a general procedure for the determination of insoluble impurities of sulfenamides in suitable organic solvents. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.040.20 (Rubber compounding ingredients) CCS:G34 发布:2002 实施:
ASTM D5051-06(2017) 橡胶复合材料的标准试验方法&x2014;苯并噻唑二硫化物(MBTS)和x2014;化验
简介:
信息:ICS:83.060 CCS: 发布:2017-05-01 实施:
ASTM D4934-02(2006) 橡胶复合材料的标准试验方法:2-苯并噻唑亚磺酰胺加速剂 - 不溶物
简介:
信息:ICS:83.040.20 CCS: 发布:2006-10-01 实施:
ASTM D5044-2002 橡胶化学制品苯并噻唑基二硫化物(MBTS)中游离2-硫醇苯并噻唑(MBT)的标准试验方法
简介:1.1 This test method describes the procedure for estimation of the chloroform-soluble, acidic impurities in benzothiazyl disulfide (MBTS). 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:2002 实施:
ASTM D4934-02(2017) 橡胶复合材料的标准试验方法:2-苯并噻唑亚砜酰胺促进剂&x2014;不溶物
简介:
信息:ICS:83.040.20 CCS: 发布:2017-05-01 实施:
ASTM D5051-2006(2017) 橡胶材料二硫化二苯并噻唑(MBTS)分析的标准试验方法
简介:4.1x00a0;The test method is designed to assess the purity of MBTS, which is used for rubber and latex vulcanization acceleration. The amount of MBTS is of importance in predicting performance in rubber compounds and for raw material purchase and control. 4.2x00a0;This test method may be used as a quality control tool and for research and development work. 1.1x00a0;This test method covers the determination of assay of benzothiazyl disulfide (MBTS). It is based on a titration of free iodine liberated upon reduction of MBTS, with potassium iodide (KI) in acid medium. 1.2x00a0;The assay is determined as mass percent. 1.3x00a0;Free 2-mercaptobenzothiazole (MBT) content is not determined. 1.4x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.6x00a0;This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
信息:ICS:83.060 CCS:G34 发布:2006 实施:
ASTM D4934-2002(2017) 橡胶复合材料的标准试验方法: 2-苯并噻唑基亚磺酰胺催速剂&x2014;不溶物
简介:4.1x00a0;Sulfenamides can degrade in chemical purity and functional performance, usually characterized by a drop in assay, a release of free amine, and an increase in insolubles. This test method may be used as an indication of such degradation. 4.2x00a0;Since MBTS (mercaptobenzothiazole disulfide) is a primary degradation product of sulfenamides, the determination of MBTS is a means of assessing possible degradation of sulfenamides. Insolubles are a means of mercaptobenzothiazyl disulfide (MBTS) content of the sulfenamide; MBTS is a primary degradation product of sulfenamides. Amine salts of mercaptobenzothiazole (MBT) may also be insoluble. However, certain soluble species may also be generated during sulfenamide degradation. Consequently, insolubles are not an absolute measure of purity and can actually decrease with sulfenamide degradation. 1.1x00a0;This test method covers a general procedure for the determination of insoluble impurities of sulfenamides in suitable organic solvents. 1.2x00a0;The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4x00a0;This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
信息:ICS:83.040.20 CCS:G34 发布:2002 实施:
ASTM D5044-06(2017) 橡胶复合材料的标准试验方法&x2014;苯并噻唑二硫化物(MBTS)中的游离2-巯基苯并噻唑(MBT)
简介:
信息:ICS:83.060 CCS: 发布:2017-05-01 实施:
ASTM D5044-2006(2017) 橡胶复合材料的标准试验方法&x2014;二硫化二苯并噻唑(MBTS)中的游离2-巯基苯并噻唑(MBT)
简介:4.1x00a0;2-Mercaptobenzothiazole (MBT) is usually the major impurity in MBTS. Free MBT may be determined by this test method. 4.2x00a0;MBT and MBTS are used for rubber and latex vulcanization acceleration. The amount of MBT in MBTS may be of importance in predicting performance in rubber compounds and for raw material purchase and control. 4.3x00a0;This test method may be used as a quality control tool and for research and development work. 1.1x00a0;This test method covers the procedure for estimation of the acidic impurities in benzothiazyl disulfide (MBTS). 1.2x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4x00a0;This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
信息:ICS:83.060 CCS:G34 发布:2006 实施:
ASTM D4934-94(1998)e1 橡胶复合材料的标准试验方法:2-苯并噻唑亚磺酰胺加速剂 - 不溶物
简介:
信息:ICS:83.040.20 CCS: 发布:1998-01-01 实施:
SN/T 4460-2016 橡胶制品中可萃取2-巯基苯并噻唑的测定
简介:
信息:ICS:83.060 CCS:G40 发布:2016-03-09 实施:2016-10-01
ASTM D5051-2006(2012) 橡胶配料的标准试验方法.二硫化苯并噻唑(MBTS).分析
简介:The test method is designed to assess the purity of MBTS, which is used for rubber and latex vulcanization acceleration. The amount of MBTS is of importance in predicting performance in rubber compounds and for raw material purchase and control. This test method may be used as a quality control tool and for research and development work.1.1 This test method covers the determination of assay of benzothiazyl disulfide (MBTS). It is based on a titration of free iodine liberated upon reduction of MBTS, with potassium iodide (KI) in acid medium. 1.2 The assay is determined as mass percent. 1.3 Free 2-mercaptobenzothiazole (MBT) content is not determined. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:2006 实施:
ASTM D5051-97 橡胶化学品的标准试验方法.苯并噻唑二硫化物(MBTS).测定
简介:
信息:ICS:83.060 CCS: 发布:1997-11-10 实施:
ASTM D4936-10(2015) 巯基苯并噻唑亚磺酰胺通过还原/滴定法测定的标准测试方法
简介:
信息:ICS:71.080.30 CCS: 发布:2015-06-01 实施:
ASTM D5044-2006 橡胶合成配料的标准试验方法.二硫化苯并噻唑(MBTS)中的游离2-巯基苯并噻唑(MBT)
简介:2-Mercaptobenzothiazole (MBT) is usually the major impurity in MBTS. Free MBT may be determined by this test method. MBT and MBTS are used for rubber and latex vulcanization acceleration. The amount of MBT in MBTS may be of importance in predicting performance in rubber compounds and for raw material purchase and control. This test method may be used as a quality control tool and for research and development work.1.1 This test method covers the procedure for estimation of the acidic impurities in benzothiazyl disulfide (MBTS).1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:2006 实施:
ASTM D5044-97 橡胶化学品的标准试验方法.苯并噻唑二硫化物中不含2-巯基苯并噻唑(MBT)
简介:
信息:ICS:83.060 CCS: 发布:1997-11-10 实施:
ASTM D1991-2015 橡胶化工品2-巯基苯并噻唑 (MBT) 鉴定的标准试验方法
简介:4.1x00a0;MBT is commonly used as an accelerator for rubber and latex vulcanization. The purity of MBT may be of importance in predicting performance in rubber compounds and this test method is designed to assess the purity of MBT. 4.2x00a0;This test method may be used as a quality control tool and for research and development work. 1.1x00a0;This test method covers a procedure for the assay of 2-mercaptobenzothiazole (MBT). It is based on a potentiometric titration of MBT with sodium hydroxide. 1.2x00a0;The assay is determined as percent by mass. 1.3x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.040.20 CCS: 发布:2015 实施:
ASTM D5051-2006 橡胶合成配料的标准试验方法.二硫化苯并噻唑(MBTS).化验
简介:The test method is designed to assess the purity of MBTS, which is used for rubber and latex vulcanization acceleration. The amount of MBTS is of importance in predicting performance in rubber compounds and for raw material purchase and control. This test method may be used as a quality control tool and for research and development work.1.1 This test method covers the determination of assay of benzothiazyl disulfide (MBTS). It is based on a titration of free iodine liberated upon reduction of MBTS, with potassium iodide (KI) in acid medium.1.2 The assay is determined as mass percent.1.3 Free 2-mercaptobenzothiazole (MBT) content is not determined.1.4 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:2006 实施:
ASTM D5051-1997 橡胶化合物的标准试验方法.苯并噻唑基二硫化物(MBTS).分析
简介:1.1 This test method describes the determination of assay of benzothiazyl disulfide (MBTS). It is based on a titration of free iodine liberated upon reduction of MBTS, with potassium iodide (KI) in acid medium. 1.2 The assay is determined as mass percent. 1.3 Free 2-mercaptobenzothiazole (MBT) content is not determined. 1.4 The values stated in SI units are to be regarded as the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:1997 实施:
HG/T 4780-2014 硫化促进剂 2-巯基苯并噻唑锌(ZMBT)
简介:本标准规定了硫化促进剂2-巯基苯并噻唑锌(简称硫化促进剂ZMBT)的型号,要求,试验方法,检验规则,标志、包装、运输和贮存。本标准适用于以硫化促进剂2-巯基苯并噻唑(简称硫化促进剂MBT)和含锌化合物为主要原料进行反应制得的硫化促进剂ZMBT。
信息:ICS:71.100.40 CCS:G71 发布:2014-12-31 实施:2015-06-01
ASTM D5044-2006(2012) 橡胶配料的标准试验方法.二硫化苯并噻唑(MBTS)中的游离2-巯基苯并噻唑(MBT)
简介:2-Mercaptobenzothiazole (MBT) is usually the major impurity in MBTS. Free MBT may be determined by this test method. MBT and MBTS are used for rubber and latex vulcanization acceleration. The amount of MBT in MBTS may be of importance in predicting performance in rubber compounds and for raw material purchase and control. This test method may be used as a quality control tool and for research and development work.1.1 This test method covers the procedure for estimation of the acidic impurities in benzothiazyl disulfide (MBTS). 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:2006 实施:
ASTM D5044-1997 橡胶化合物的标准试验方法.苯并噻唑基二硫化物中游离2-硫醇苯并噻唑
简介:1.1 This test method describes the procedure for estimation of the chloroform-soluble, acidic impurities in benzothiazyl disulfide (MBTS). 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.060 (Rubber) CCS:G34 发布:1997 实施:
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