Does Tolyltriazole protect every metal surface?

No. Its principal use is protection of copper and copper alloys. Suitability for a mixed-metal circuit depends on metallurgy, formulation pH, water quality and the other inhibitors in the programme, so system testing is required.

How does Tolyltriazole differ from benzotriazole?

Both are azole corrosion inhibitors, but they are different substances with different commercial forms and formulation behaviour. Selection should be based on the target metal, solubility route, regulatory requirements and the performance of the finished coolant or inhibitor blend.

Which properties matter when buying TTA powder?

Assay, moisture, ash, chloride, particle form and dissolution behaviour are the useful purchasing controls. The relevant limits should be written into the agreed specification and verified on the batch COA.

Tolyltriazole (TTA) CAS 29385-43-1

Tolyltriazole (TTA), also known as methylbenzotriazole, CAS 29385-43-1, is a copper-corrosion inhibitor for closed-loop water, antifreeze, lubricant and metalworking formulations. Powder or granule grades are specified by assay and moisture, with COA, TDS and SDS for the agreed product.

CAS: 29385-43-1
Synonyms: Tolyltriazole; TTA; Methylbenzotriazole; 4/5-Methylbenzotriazole
Einecs: Not specified
Molecular Formula: C7H7N3
Grade: Industrial powder or granule grade; assay and moisture confirmed by COA
Package: Sealed 25 kg bags or fibre drums; final packaging selected for moisture control and export requirements
Appearance: Off-white powder or granule
Assay: Confirmed by batch COA
Moisture: Specified by purchaser and confirmed by COA
Primary function: Copper and copper-alloy corrosion inhibition
Key checks: Assay, moisture, chloride, ash and particle form

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Product Description

Tolyltriazole (TTA, CAS 29385-43-1) is commonly supplied as an off-white powder or granule for corrosion-inhibitor formulations. Its principal industrial role is copper and copper-alloy protection, especially where a formulation needs an azole component for closed-loop cooling water, antifreeze, lubricant or metalworking use.

1 Applications

2 Specification points

3 Formulation boundary

Applications

Closed-loop cooling-water and antifreeze formulations containing copper or brass components.
Water-based and oil-based metalworking fluids where copper-alloy staining or corrosion is a concern.
Lubricants, rust-preventive oils and vapour-phase corrosion-inhibitor systems.
Multi-component cooling-water programmes alongside scale inhibitors and biocides where compatibility has been tested.

Specification points

State whether powder or granule form is required, then define assay, moisture, ash, chloride and particle-handling requirements. Benzotriazole is related but should not be treated as an automatic one-for-one substitute; metal metallurgy, formulation pH and solubility route matter.

Formulation boundary

TTA is a component in a corrosion-control programme, not a universal cure for all metals or water systems. Dose and compatibility should be confirmed in the final formulation and under actual operating conditions.

FAQ - Technical & Supply Chain

Q:
Does Tolyltriazole protect every metal surface?

A: No. Its principal use is protection of copper and copper alloys. Suitability for a mixed-metal circuit depends on metallurgy, formulation pH, water quality and the other inhibitors in the programme, so system testing is required.
Q:
How does Tolyltriazole differ from benzotriazole?

A: Both are azole corrosion inhibitors, but they are different substances with different commercial forms and formulation behaviour. Selection should be based on the target metal, solubility route, regulatory requirements and the performance of the finished coolant or inhibitor blend.
Q:
Which properties matter when buying TTA powder?

A: Assay, moisture, ash, chloride, particle form and dissolution behaviour are the useful purchasing controls. The relevant limits should be written into the agreed specification and verified on the batch COA.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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