1H-Benzotriazole powder Raw Materials CAS 95-14-7

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Uses and synthesis of 1H-Benzotriazole powder

1H-Benzotriazole powder (BTZ) is an organic compound. Benzotriazole has anti-corrosion effect on copper, aluminum, cast iron, nickel, zinc and other metal materials. 1H-Benzotriazole can be used in combination with a variety of scale inhibitors and bactericidal algaecide agents. 1H-Benzotriazole does not interfere with the corrosion inhibition of polyphosphates and has strong resistance to oxidation. The form of 1H-Benzotriazole powder completely dissolved in water varies according to pH: in strongly acidic solutions (pH < 1), it exists in the protonated form BTAH+2; In weak acid, neutral and weakly alkaline solutions, it exists in the form of BTA; In strongly alkaline solutions (pH > 8), it exists in the form of BTA-.

Applications/Functions of 1H-Benzotriazole powder

• 1H-Benzotriazole powder is widely used as lubricant additive. Metal deactivator; Extreme pressure agents, bacteria and oxidation inhibitors, used as antioxidants in internal combustion engine oils.
• 1H-Benzotriazole is mainly used as water treatment agent, metal rust inhibitor and corrosion inhibitor. Benzotriazole is one of the most effective corrosion inhibitors for copper and copper alloys in cooling water systems. 1H-Benzotriazole is widely used in circulating water treatment agent, anti-rust oil and lipid products, as well as gas phase corrosion inhibitor and lubricant additive for copper and copper alloys. In electroplating, it is used to purify silver, copper and zinc on the surface, and has the effect of preventing discoloration.
• 1H-Benzotriazole is used in extreme pressure industrial gear oil, hyperbolic gear oil, anti-wear hydraulic oil, oil film bearing oil, grease and other lubricating oils, and can be used as rust and gas phase corrosion inhibitor
• 1H-Benzotriazole powder is used as an analytical reagent and photographic antifogging agent, as well as in organic synthesis
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Physicochemical Property of 1H-Benzotriazole powder

White to light brown acicular crystalline powder. It gradually turns red in air due to oxidation. Soluble in methanol, acetone, cyclohexane, ether, etc., insoluble in water and petroleum solvents. The aqueous solution is weakly acidic with a pH value of 5.5 ~ 6.5. Flammable in case of open fire or high heat. Due to high thermal decomposition, toxic fumes are emitted.

Production methodprocess of 1H-Benzotriazole powder

O-phenylenediamine diazotization process. A relatively pure 1H-Benzotriazole can be prepared by diazotization of o-phenylenediamine, and then synthesis in acetic acid to obtain crude benzotriazole, then recrystallization and vacuum drying.

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