1,2,3-Benzotriazole is white or light yellow needle-shaped crystallite. Its melting point is 98.5℃. And the boiling point is 204℃ (15mm mercury column). This benzotriazole is slightly soluble in water, and organic solvents, such as alcohol, benzene, toluene, and chloroform.

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Molecular Formula:


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Structure Formula:

123-benzotriazole structure formula


ItemTop-ranking ProductFirst-grade Product
AppearanceWhite or light yellow crystal or slice, granule styleWhite or buff slice, granule style
Purity99.5% Min.99.0% Min.
Melting point96-99℃ Min.95-98℃ Min.
Ash content0.05% Max.0.1% Max.
pH Value5.5-6.55.5-6.5
Color density80 Max.120 Max.


1,2,3-Benzotriazole is used as an antirust of metals, such as silver, copper, lead, nickel, and zinc. This benzotriazole is widely used for products of slushing oil (grease), mainly for vapor phase corrosion inhibitors of copper or copper alloy.

1,2,3-Benzotriazole is used as a treating compound of cycle water, antifreeze for auto, fog preventative for taking pictures, macromolecule stabilizer, ethylene chlorohydrin, lube oil additive, and ultraviolet absorber.

Benzotriazole can also be used with many dirty-resistance agents and sterilized algaecide, especially for the corrosion mitigation effect of the air proofing circulation cooling water system.

Packing and Storage:

Net weight is 20kg, plastic weaving bag or according to client’s requirement.

25kg paper bags

1,2,3-Benzotriazole should be put in the ventilation and dry place. It is forbidden to place it together with food and seeds.


Benztriazole, BTA chemical, 1h-benzotriazole, Cobratec 99.