Accelerator TBBS (also called NS or NZ), CAS 95-31-8 (N-tert-butyl-2-benzothiazolesulfenamide), is a sulfenamide (delayed-action) rubber accelerator. It is one of the most widely used accelerators in the tyre and rubber industry, giving good scorch safety with a fast, efficient cure. PolyBlueChem supplies it to the specification below with per-batch COA and SDS.
Specifications
| Parameter | Specification |
|---|---|
| Appearance | White or light yellow powder / granular |
| Initial melting point | 104 °C min |
| Heating loss | 0.50% max |
| Ash | 0.50% 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 | 95-31-8 |
| Synonyms | Accelerator TBBS; NS; NZ; N-tert-butyl-2-benzothiazolesulfenamide; N-tert-butylbenzothiazole-2-sulfenamide |
| Molecular formula | C11H14N2S2 |
| Molecular weight | 238.4 g/mol |
| Type | Sulfenamide accelerator (delayed action / post-vulcanisation) |
Applications
- Tyres – the principal accelerator for tread, carcass and sidewall compounds.
- Technical rubber goods – belts, hoses, seals, mouldings.
- General rubber – NR, SBR, BR and blends, activated with zinc oxide and stearic acid.
- Light-coloured and non-staining compounds – a clean-curing sulfenamide.
TBBS is a delayed-action (post-vulcanisation) accelerator: it gives good scorch safety during processing and then a fast cure. It is often used with a secondary accelerator to fine-tune the vulcanisation system.
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 TBBS (NS, CAS 95-31-8) 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.
