Tertbutyl Benzothiazole Sulfenamide (TBBS)

Tire Production: Primary accelerator for high-performance tire components requiring long processing safety.
Conveyor Belting: Used in the manufacturing of high-tensile industrial belts and heavy-duty mechanical goods.
Shoe Soles: Provides consistent curing and excellent physical durability for high-end rubber footwear.

TBBS, NS, N-tert-butyl-2-benzothiazyl sulfenamide.

CAS: 95-31-8
EC: 202-409-1
Sectors: Rubber & Elastomers, Automotive

Tertbutyl Benzothiazole Sulfenamide (TBBS) (CAS 95-31-8) is a sulfenamide-class delayed-action primary accelerator supplied as a light-yellow powder or granular material, with a minimum purity of 98%, used mainly in sulfur-cured rubber systems for tire carcass and tread compounds, conveyor belting and rubber footwear. With 98% min purity, it is engineered for high-speed industrial processing where scorch safety is paramount.

This light-yellow powder or granular material provides an excellent balance between processing safety and rapid curing at vulcanization temperatures. It is widely used in sulfur-cured systems to achieve high-modulus physical properties.

TBBS is highly effective in tire manufacturing, particularly for carcass and tread compounds where long scorch times are required during extrusion. It is considered a modern, high-activity alternative to traditional sulfenamide accelerators.

Typical Properties

Molecular formula	C₁₁H₁₄N₂S₂
Molecular weight	238.37 g/mol
Melting point	105 °C
Density	1.29 g/cm³ @ Temp: 25 °C
Water solubility	1.74mg/L at 20°C
Flash point	165°C
GHS signal word	Warning · Irritant / harmful, Health hazard, Environmental hazard
HS code	29342000
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.

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