Accelerator MBTS (also called DM), CAS 120-78-5 (2,2′-dibenzothiazyl disulfide), is a thiazole-type rubber accelerator. It is a general-purpose accelerator with good scorch safety, widely used on its own or with a secondary accelerator (such as DPG) in tyres and technical rubber goods. PolyBlueChem supplies it to the specification below with per-batch COA and SDS.
Specifications
| Parameter | Specification |
|---|---|
| Appearance | White or light yellow powder |
| Initial melting point | 165 °C min |
| Heating loss | 0.30% max |
| Ash | 0.30% max |
| Sieve residue (150 µm) | 0.1% max |
A full specification sheet and a certificate of analysis (COA) for each batch are available on request.
Basic Information
| CAS number | 120-78-5 |
| Synonyms | Accelerator MBTS; DM; dibenzothiazyl disulfide; 2,2′-dibenzothiazyl disulfide; benzothiazyl disulfide |
| Molecular formula | C14H8N2S4 |
| Molecular weight | 332.5 g/mol |
| Type | Thiazole accelerator |
Applications
- Tyres – treads, carcasses and other tyre compounds.
- Technical rubber goods – belts, hoses, footwear, mouldings.
- Secondary-accelerated systems – used with DPG or other accelerators to adjust cure.
- General rubber – NR, SBR, BR, NBR and blends.
MBTS is a moderately fast thiazole accelerator with good processing safety. It is the disulfide counterpart of MBT; the two are related thiazole accelerators, with MBTS generally giving better scorch safety and less tendency to bloom.
Packaging and documentation
- 25 kg PP/PE bags or fibre drums; keep sealed, cool and dry.
- Per-batch certificate of analysis (COA) and safety data sheet (SDS).
PolyBlueChem supplies Accelerator MBTS (DM, CAS 120-78-5) to this specification, with per-batch COA and SDS, competitive pricing on bulk volumes and FOB/CIF delivery. Contact us with your tonnage and delivery port for a quotation.
