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ASTM D1991-15

Current Revision

Standard Test Method for Rubber Chemicals—2-Mercaptobenzothiazole (MBT)—Assay

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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.


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.

SDO ASTM: ASTM International
Document Number D1991
Publication Date June 1, 2015
Language en - English
Page Count 3
Revision Level 15
Supercedes
Committee D11.11
Publish Date Document Id Type View
June 1, 2015 D1991-15 Revision
Oct. 1, 2005 D1991-05 Revision
Nov. 10, 1996 D1991-96 Revision
Sept. 1, 2023 D1991-15R23 Reaffirmation
Dec. 1, 2019 D1991-15R19 Reaffirmation
June 1, 2010 D1991-05R10 Reaffirmation
Nov. 10, 1996 D1991-96R01 Reaffirmation