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Significance and Use
4.1 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.
4.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ICS Number Code 83.040.20 (Rubber compounding ingredients)
UNSPSC Code 12352100(Organic derivatives and substituted compounds)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D1991-15(2019), Standard Test Method for Rubber Chemicals—2-Mercaptobenzothiazole (MBT)—Assay, ASTM International, West Conshohocken, PA, 2019, www.astm.orgBack to Top