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ASTM D 4936 : 2010 : R2015

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/Titration
Available format(s)

Hardcopy , PDF

Superseded date

10-19-2023

Language(s)

English

Published date

06-01-2015

CONTAINED IN VOL. 09.01, 2015 Defines the determination of assay on mercaptobenzothiazole (MBT) sulfenamides.

1.1This 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.

1.2Any free amine (HNR2) or weak acid salts of the corresponding amine (HX·HNR2) are titrated prior to reduction. This titer is used to calculate percent basic impurity (as free amine) in the sample.

1.3With 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).

1.4The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5This 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.

Committee
D 11
DocumentType
Test Method
Pages
8
ProductNote
Reconfirmed 2015
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 5297 : 1995 : R2019 Standard Test Methods for Rubber Chemical Accelerator—Purity by High Performance Liquid Chromatography
ASTM D 5900 : 2017 : EDT 1 Standard Specification for Physical and Chemical Properties of Industry Reference Materials (IRM)

ASTM D 4483 : 1999 Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon Black Industries
ASTM D 4483 : 2005 : REV A Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2005 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2014 : REV A Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2014 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2018 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2005 : REV A : R2011 Standard Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ASTM D 4483 : 2014-02 PRACTICE FOR EVALUATING PRECISION FOR TEST METHOD STANDARDS IN THE RUBBER AND CARBON BLACK MANUFACTURING INDUSTRIES

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