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Benzothiazole

CAS Number
95-16-9
EC Number
202-396-2
Chemical Formula
C7H5NS
Molecular Weight
135.19 g/mol

Description

Benzothiazole (CAS 95-16-9 ), also known by the trade name Vangard BT, is a bicyclic heterocyclic compound used across rubber processing, flavor formulation, and industrial preservation. It functions primarily as a chemical intermediate and precursor in the synthesis of accelerators, dyes, and biocidal agents. In rubber and tire manufacturing, it serves as a key building block. This compound is essential for benzothiazole-based vulcanization accelerators, directly influencing cure rates and compound performance. Flavor and fragrance formulators use it under FEMA 3256 . It contributes nutty, slightly roasted notes to food and beverage applications. In textile and paper processing, benzothiazole derivatives are incorporated into dye intermediates and optical brighteners. The heterocyclic core drives chromophore activity in these applications. Industrial preservation systems, including metalworking fluids and coating formulations, rely on benzothiazole-derived biocides. These biocides control microbial growth and extend product shelf life. Benzothiazole is supplied as a liquid or low-melting solid, depending on temperature conditions during handling and storage. Technical grade is the standard offering for industrial and rubber applications, while higher-purity grades are available to meet flavor and fragrance industry requirements. It is typically packaged in drums or IBCs for bulk procurement. Our material meets rigorous industry specifications to ensure consistent performance across all manufacturing sectors. Contact us for supply of Benzothiazole Request Quote

Other Names (Synonyms)

1,3-Benzothiazole | 1-Thia-3-azaindene | Vangard BT | USAF EK-4812 | O-2857 | Benzothiazoline blends

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point2 °C
Boiling Point227-228 °C @ Press: 765 Torr
Density1.246 g/cm³ @ Temp: 20 °C
Flash Point>230 °F
Appearanceyellow liquid with an unpleasant odour
ColorClear yellow-brown to brown
Odorodor of quinoline, sltly water-sol
FormLiquid
Water Solubilityslightly soluble
Vapor Pressure34 mm Hg ( 131 °C)
Refractive Indexn 20/D 1.642(lit.)
Log P2.01

Safety & Handling

Danger
GHS06· ToxicGHS07· Irritant

Hazard Statements

H301Toxic if swallowed
H302Harmful if swallowed
H310Fatal in contact with skin
H311Toxic in contact with skin
H316Causes mild skin irritation
H319Causes serious eye irritation
H320Causes eye irritation
H332Harmful if inhaled
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects H301+
H311Toxic if swallowed or in contact with skin

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P262Do not get in eyes, on skin, or on clothing.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off immediately all contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29342080
WGK (Germany)2