Benzothiazole

CAS: 95-16-9

Overview

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.

Physical Properties

Melting Point	2 °C
Boiling Point	227-228 °C @ Press: 765 Torr
Density	1.246 g/cm³ @ Temp: 20 °C
Flash Point	>230 °F
Appearance	yellow liquid with an unpleasant odour
Color	Clear yellow-brown to brown
Odor	odor of quinoline, sltly water-sol
Form	Liquid
Water Solubility	slightly soluble
Vapor Pressure	34 mm Hg ( 131 °C)
Refractive Index	n 20/D 1.642(lit.)
Log P	2.01

Safety & Handling

Danger GHS06 GHS07 Hazard Statements H301 Toxic if swallowed H302 Harmful if swallowed H310 Fatal in contact with skin H311 Toxic in contact with skin H316 Causes mild skin irritation H319 Causes serious eye irritation H320 Causes eye irritation H332 Harmful if inhaled H402 Harmful to aquatic life H412 Harmful to aquatic life with long lasting effects H301+H311 Toxic if swallowed or in contact with skin Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P321 Specific treatment (see … on this label). P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29342080
WGK (Germany)	2

Other Names

Industries

Rubber & Tire Printing & Packaging Food & Nutrition Textile, Leather & Paper