ASTM D 1991 - 15 Standard Test Method for Rubber Chemicals - 2-Mercaptobenzothiazole (MBT) - Assay

Current edition approved June 1, 2015. Published July 2015. Originally approved in 1991. Last previous edition approved in 2010 as D1991 – 05 (2010). — 3 p.
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.