This standard specifies the requirements, sampling, test methods, inspection rules and signs, packaging, transportation and storage of the vulcanization accelerator DM (dibenzothiazole disulfide) used in the rubber industry. This standard applies to vulcanization accelerator DM prepared from 2-mercaptobenzothiazole (vulcanization accelerator M) with air, sodium nitrite, sulfuric acid, hydrogen peroxide, chlorine, etc. Commodity name: vulcanization accelerator DM Chemical name: dibenzothiazole disulfide Molecular formula: C14H8N2S4 Relative molecular mass: 332.50 (in 1999 International Relative Atomic Mass)