Accelerator TBBS(NS)

Product name: TBBS(NS)
Chemical name: N-tert-butyl-2-benzothiazyl sulfenamide
Structure:

CAS No.: 95-31-8

Specification:

Item	Granular	Powder	Oil powder
Appearance	Light yellow granular	Light yellow powder	Light yellow oily powder
Initial melting point [≥ °C]	104	104	104
Loss on drying [≤ %]	0.40	0.40	0.40
Ash content [≤ %]	0.40	0.40	0.40
Residue on 100 mesh sieve [≤ %]	–	0.5	–
Granular diameter [mm]	1.5-3	–	–
Broken strength [N]	2-5	–	–
Oil content [%]	–	–	1.0-2.0

What is TBBS?
TBBS (N‑Tertiarybutyl‑2‑benzothiazylsulfenamide) is a widely used delayed-action accelerator in the rubber industry. It provides excellent scorch safety and controlled vulcanization, ensuring efficient curing without premature crosslinking. It can be used alone or in combination with other accelerators such as thiurams, guanidines, and dithiocarbamates to optimize curing performance. Its non-blooming property and reliable performance make it ideal for the production of tires, hoses, belts, and footwear, delivering consistent quality in high-performance rubber products.

Properties:
TBBS is a grey to light yellow powder with a slight odor and a characteristic bitter taste. It has a specific gravity of 1.26–1.32. TBBS is soluble in ethanol, carbon tetrachloride, acetone, benzene, carbon disulfide, and chloroform, slightly soluble in gasoline, and insoluble in water. The compound is non-hygroscopic, making it easy to handle and store.

Applications:
TBBS is a delayed-action accelerator that provides fast curing and high modulus development in natural rubber (NR), styrene-butadiene rubber (SBR), butadiene rubber (BR), and their blends. It is usually used alone or together with small amounts of ultra-accelerators in tire compounds and industrial rubber products, ensuring controlled vulcanization and consistent performance.

Packaging:
Available in 25 kg bags.

Storage:
Keep in a tightly sealed container in a cool, dry, and well-ventilated place. The recommended maximum storage life under normal conditions is 1 year.