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HELM is represented with branches and sales offices in more than 30 countries.

Also known under the product name:

  • Methyl-1H-Benzotriazole

CAS-Nr.: 29385-43-1
EINECS-Nr.: 249-596-6



Tolyltriazole forms a strong anti-corrosion film on copper, its alloys and other metals.

Ekkehard Kloevekorn

Ekkehard Kloevekorn

Executive Manager

Tel +49 40 2375-1200

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Tolyltriazole neither does influence the original appearance of the metal nor its conductibility of heat and electricity. The protective layer is wipe and cleaning resistant and leaves no greasy film.

Examples of applications

Tolyltriazole is mainly used in the chemical industry to protect copper from being contaminated in order to save the purity. Tolyltriazole is mainly used as corrosion inhibitor in coolants, metalworking and hydraulic fluids and various water treatment applications.


  • 25 kg bags

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