Benzotriazole is a heterocyclic organic compound, which is poorly soluble in water and has a faint aromatic odour. It has a variety of uses. Benzotriazole is used as a corrosion inhibitor for metals such as copper, zinc, silver and aluminium. It forms a protective film on the metal surface that protects the metal from corrosion caused by moisture and aggressive environmental conditions. Benzotriazole is used as a corrosion inhibitor in coolants and antifreeze. In addition, it is used as a UV stabiliser in plastics to prevent their degradation by UV radiation and to extend the life of the plastics.


  • BTA
  • 1H-Benzotriazole
  • 1,2,3-Benzotriazole

General information:

Abbreviation BTA
CAS number 95-14-7
EC no: 202-394-1
REACH Registration No. 01-2119979079-20
MATSEN Article no. 1520
Sum formula: C6H5N3
Description odorless and colorless granules, flakes or fine granules
Available packaging 25 kg Bags , 500 kg Big Bag
Variants granular | fine-granular | flakes | powder
Aggregate state solid
Form granular | fine-granular | flakes | powder
Colour colorless
Odour odourless
Purity ≥99.5% % m/m
Boiling point 204 °C
Melting point 100 °C

Safety data sheet and specifications