TMTM CAS NO.97-74-5

Bis(dimethylthiocarbamyl) sulfide (TMTM) | CAS 97-74-5 – Rubber Accelerator and Vulcanization Agent

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Bis(dimethylthiocarbamyl) sulfide (TMTM) | CAS 97-74-5 – Rubber Accelerator and Vulcanization Agent

Chemical Overview

• Product Name: Bis(dimethylthiocarbamyl) sulfide

• Abbreviation: TMTM

• CAS Number: 97-74-5

• Molecular Formula: C6H12N2S3

• Molecular Weight: 208.37 g/mol 

• EC Number: 202-607-8

Other Names

• TMTM

• Tetramethylthiuram monosulfide

• Bis(dimethylthiocarbamoyl)sulfide

• Rubber accelerator TMTM

• Dimethyldithiocarbamic acid, sulfide

What is Bis(dimethylthiocarbamyl) sulfide (TMTM)?

TMTM (CAS 97-74-5), or Bis(dimethylthiocarbamyl) sulfide, is a non-staining rubber accelerator primarily used in the vulcanization of natural and synthetic rubbers. It is a thiuram class accelerator known for its medium-fast curing speed and excellent heat-aging properties. TMTM is widely used in combination with other accelerators to enhance performance, improve processing, and achieve high-quality rubber goods.

Applications of TMTM (CAS 97-74-5)

1. Rubber Industry

Primary or Secondary Accelerator – Used in NR, SBR, NBR, EPDM, and IIR rubber compounds
Vulcanizing Agent – Improves cross-linking density and speeds up the vulcanization process
Non-Blooming & Non-Staining – Ideal for light-colored rubber products and technical rubber articles

2. Tire and Tube Manufacturing

Used in the production of tires, inner tubes, hoses, and conveyor belts

3. Industrial Rubber Goods

Suitable for shoe soles, rubber seals, gaskets, molded rubber parts, and belting

Technical Specifications

Property	Specification
Appearance	Pale yellow powder
Purity	≥ 97%
Melting Point	105–120°C
Density	1.29 g/cm³
Solubility	Insoluble in water, soluble in organic solvents
Storage	Store in a cool, dry, and ventilated area
Packaging	25kg plastic woven bags / kraft paper bags or as customized

Key Benefits of TMTM

• Excellent vulcanization accelerator for both natural and synthetic rubbers

• Non-blooming and non-staining—ideal for high-quality rubber goods

• Low toxicity compared to other thiuram accelerators

• Versatile application in multiple rubber products

• Stable during processing, improves scorch safety when used with secondary accelerators

Conclusion

Bis(dimethylthiocarbamyl) sulfide (TMTM, CAS 97-74-5) is a high-performance thiuram accelerator essential for vulcanizing a wide range of rubber compounds. Its low toxicity, excellent processing safety, and bloom-resistant characteristics make it a preferred choice in the rubber and elastomer industry.

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