Benzothiazyl Disulfide (MBTS)
MBTS, Dibenzothiazyl Disulfide, Accelerator DM.
- CAS
- 120-78-5
- EC
- 204-424-9
- Sectors
- Rubber & Elastomers, Automotive
Benzothiazyl Disulfide (MBTS) (CAS 120-78-5) is a Technical Grade primary accelerator for the vulcanization of natural and synthetic rubbers, supplied as a cream to pale-yellow powder with a 98% min purity profile, and used in tires, belts and molded mechanical goods. It provides a 98% min purity profile, ensuring consistent results in sulfur-cured systems without the risk of premature scorching.
This versatile chemical acts as a non-staining, bitter-tasting powder that is easily dispersed in rubber matrices. It is particularly valued for its ability to impart high modulus and excellent tensile strength to finished industrial components.
The product exhibits superior storage stability and remains chemically inert at processing temperatures until the vulcanization threshold is reached. It serves as a vital component in the production of high-durability tires, belts, and molded mechanical goods.
Typical Properties
| Molecular formula | C14H8N2S4 |
|---|---|
| Molecular weight | 332.49 g/mol |
| Appearance | yellow amorphous powder |
| Form | powder to crystal |
| Color | Cream to pale-yellow powder |
| Odor | gray-wh. to cream powd. or pellets, sl. odor |
| Melting point | 180 °C |
| Density | 1.50 g/cm³ |
| Water solubility | <0.01 g/100 mL at 21 °C |
| Flash point | 271°C |
| GHS signal word | Warning · Irritant / harmful, Environmental hazard |
| HS code | 29342020 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Benzothiazyl Disulfide (MBTS)
Applications
- Rubber Compounding: Functions as a semi-ultra accelerator for natural rubber (NR) and styrene-butadiene rubber (SBR).
- Latex Processing: Employed in specialized latex applications requiring moderate curing speeds and high physical properties.
- Industrial Goods: Used in the manufacture of high-tensile conveyor belts, rubber seals, and automotive footwear.
Safety & Risks
Classified as a Skin Sensitizer and Aquatic Acute 1. Avoid contact with skin; wear Nitrile Gloves, Safety Goggles, and Dust Masks during handling.
Packaging
Standard 25 kg multi-wall paper bags or large woven jumbo bags (500 kg/1000 kg).