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GB/T 21840-2025: Vulcanizing accelerator - N-tert-butyl-1, 3-benzothiazole-2-sulfenamide(TBBS)
Status: Valid GB/T 21840: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21840-2025 | English | 289 |
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Vulcanizing accelerator - N-tert-butyl-1, 3-benzothiazole-2-sulfenamide(TBBS)
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GB/T 21840-2025
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| GB/T 21840-2008 | English | 130 |
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Vulcanizing accelerator TBBS
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GB/T 21840-2008
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PDF similar to GB/T 21840-2025
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Count Estimation | 14,198 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2026-02-01 | | Older Standard (superseded by this standard) | GB/T 21840-2008 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 21840-2025: Vulcanizing accelerator - N-tert-butyl-1, 3-benzothiazole-2-sulfenamide(TBBS)---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21840-2025
ICS 83.040.20
CCSG71
National Standard of the People's Republic of China
Replaces GB/T 21840-2008
Vulcanization accelerator N-tert-butyl-1,
3-Benzothiazole-2-sulfenamide (TBBS)
Released on August 1, 2025
Implementation on February 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 21840-2008 "Vulcanization Accelerator TBBS". Compared with GB/T 21840-2008, except for the structural adjustment and
In addition to editorial changes, the main technical changes are as follows.
--- Added a chapter on terms and definitions (see Chapter 3);
--- Added technical requirements for vulcanization accelerator TBBS granular type (see Table 1);
--- Changed the technical indicators of initial melting point, methanol insoluble matter and purity (see Table 1, Table 1 of the.2008 edition);
--- Added instrumental method for determining initial melting point (see 5.3.2);
--- Changed the test method for purity (see 5.9.1, 4.8 of the.2008 edition);
--- Added titration method for purity determination (see 5.9.2).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Rubber and Rubber Products of Standardization (SAC/TC35).
This document was drafted by. Shandong Yanggu Huatai Chemical Co., Ltd., Shandong Shangshun Chemical Co., Ltd., and Sennics Technology Co., Ltd.
Co., Ltd., Kemai Chemical Co., Ltd., Ningbo Aikemu New Materials Co., Ltd., Henan Kailun Chemical Co., Ltd., Shandong Sidi
Er Chemical Technology Co., Ltd., Puyang Kemaowei New Materials Co., Ltd., Henan Yongxin Chemical Co., Ltd., Hebi Hengli Rubber and Plastic
Co., Ltd., Shanxi Chemical Research Institute (Co., Ltd.).
The main drafters of this document are. Wang Wenbo, Shi Lilong, An Fang, Wang Caipeng, Yang Chunxia, Li Fengwei, Bai Chunmei, Yi Yuqiong, Wang Kuiliang, Tian Xu,
Gan Zhonghao, Song Kuijing, and Wang Yanbin.
This document was first published in.2008 and this is the first revision.
Vulcanization accelerator N-tert-butyl-1,
3-Benzothiazole-2-sulfenamide (TBBS)
Warning. Personnel using this document should have practical experience in regular laboratory work. This document does not address all possible safety issues.
The user is responsible for taking appropriate safety and health measures and ensuring that the conditions stipulated by relevant national laws and regulations are met.
1 Scope
This document specifies the principles and methods of vulcanization accelerator N-tert-butyl-1,3-benzothiazole-2-sulfenamide (hereinafter referred to as vulcanization accelerator TBBS).
It also describes the corresponding batching rules, sampling, test methods, and stipulates the marking, packaging, transportation and storage.
content.
This document applies to the detection of vulcanization accelerator TBBS made by oxidation of tert-butylamine and vulcanization 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 2022 international relative atomic mass)
CAS No..95-31-8
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 191 Pictorial symbols for packaging, storage and transportation
GB/T 601 Preparation of standard titration solutions for chemical reagents
GB/T 603 Preparation of preparations and products used in test methods for chemical reagents
GB/T 617-2006 General method for determination of melting point range of chemical reagents
GB/T 6679 General Rules for Sampling of Solid Chemical Products
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 8170-2008 Rules for rounding off values and expression and determination of limit values
GB/T 11409-2008 Test methods for rubber antioxidants and vulcanization accelerators
GB/T 21184-2007 Test method for sulfenamide accelerators in rubber compounding ingredients
3 Terms and Definitions
There are no terms or definitions that require definition in this document.
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