GB/T 21840-2025: Vulcanizing accelerator - N-tert-butyl-1, 3-benzothiazole-2-sulfenamide(TBBS)

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Scope

This document specifies the technical requirements for the physical and chemical
properties of the vulcanizing accelerator N-tert-butyl-1, 3-benzothiazole-2-sulfenamide
(hereinafter referred to as vulcanizing accelerator TBBS), describes the corresponding
batching rules, sampling, test methods, and stipulates the contents of marking,
packaging, transportation and storage.
This document applies to the detection of the vulcanizing accelerator TBBS made by
oxidation of tert-butylamine and the vulcanizing accelerator MBT.
Chemical name. N-tert-butyl-1, 3-benzothiazole-2-sulfenamide
Molecular formula. C11H14N2S2
Structural formula.
Relative molecular mass. 238.37 (according to the international relative atomic mass in
2022)
CAS No.. 95-31-8

Basic Data

Standard ID	GB/T 21840-2025 (GB/T21840-2025)
Description (Translated English)	Vulcanizing accelerator - N-tert-butyl-1, 3-benzothiazole-2-sulfenamide(TBBS)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G71
Classification of International Standard	83.040.20
Word Count Estimation	14,198
Date of Issue	2025-08-01
Date of Implementation	2026-02-01
Older Standard (superseded by this standard)	GB/T 21840-2008
Issuing agency(ies)	State Administration for Market Regulation, Standardization Administration of China