Tolyltriazole (TTA) — CAS 29385-43-1
Tolyltriazole (TTA) — CAS 29385-43-1
Product Information
Product Name: Tolyltriazole
Common Name: TTA
Synonyms: 4/5-Methyl-1H-benzotriazole; 4/5-Methyl-1,2,3-benzotriazole; Tolutriazole
CAS Number: 29385-43-1
Molecular Formula: C₇H₇N₃
Molecular Weight: 133.15 g/mol
Chemical Family: Methyl-substituted benzotriazole
Physical Form: Light yellow to off-white granules or powder.
Tolyltriazole (TTA) is a specialty corrosion inhibitor used primarily for the protection of copper, copper alloys and other metal surfaces against corrosion, staining and surface degradation. It is a methyl-substituted benzotriazole compound supplied mainly as a powder or granular solid.
Tolyltriazole is particularly suited to formulations where reliable copper and copper-alloy protection is required, including industrial water-treatment systems, closed-loop cooling systems, metalworking fluids, lubricants, antifreeze/coolant formulations and specialty corrosion-inhibitor blends.
UAB An Group Export supplies Tolyltriazole for qualified commercial and industrial customers according to required grade, specification, quantity, packaging and destination.
Chemical Identification
Property | Details |
Product Name | Tolyltriazole |
Abbreviation | TTA |
CAS Number | 29385-43-1 |
Molecular Formula | C₇H₇N₃ |
Molecular Weight | 133.15 g/mol |
Chemical Family | Methylbenzotriazole |
Physical Form | Powder / Granules |
Appearance | Light yellow to off-white |
Primary Function | Corrosion inhibitor |
Note: Commercial Tolyltriazole identified by CAS 29385-43-1 can contain methylbenzotriazole isomers. The exact composition and specification should be confirmed through the applicable Certificate of Analysis (CoA).
Key Applications
Copper & Copper-Alloy Protection
Tolyltriazole is widely used to help protect copper and copper-containing alloys from corrosion and surface deterioration. It can be incorporated into formulations designed for copper, brass and related metal components.
Industrial Water Treatment
TTA is used in corrosion-control formulations for:
Closed-loop cooling-water systems
Recirculating water systems
Industrial cooling equipment
Heat-exchange systems
Metal-containing water circuits
Its use can help reduce corrosion-related deterioration of copper and copper-alloy components within appropriately formulated treatment systems.
Metalworking Fluids
Tolyltriazole can be incorporated into metalworking formulations to provide corrosion protection for metal surfaces during processing, storage and handling.
Applications include:
Metalworking fluids
Cutting fluids
Grinding fluids
Metal-treatment formulations
Corrosion-protection concentrates
Lubricants & Industrial Fluids
TTA is used in selected lubricant and industrial-fluid formulations where protection of copper and other susceptible metal surfaces is required.
Automotive Coolants & Antifreeze
Appropriately specified Tolyltriazole can be used as part of corrosion-inhibitor packages for automotive and industrial coolant systems, particularly where copper and copper-alloy components require protection.
Specialty Chemical Formulations
Tolyltriazole is also supplied as a component for the manufacture of:
Corrosion-inhibitor blends
Metal-protection formulations
Water-treatment chemicals
Industrial maintenance products
Specialty chemical systems
Industries We Serve
Water TreatmentCorrosion-control formulations for industrial water and cooling systems.
Metal ProcessingProtection of copper, brass and other metal surfaces during processing.
AutomotiveSelected coolant and antifreeze corrosion-inhibitor systems.
Chemical ManufacturingRaw material for specialty chemical and corrosion-control formulations.
Lubricants & Industrial FluidsComponent for formulations requiring metal-surface protection.
Industrial MaintenanceCorrosion-control and metal-protection applications.
Copper & Copper-Alloy ManufacturingApplications where protection against corrosion and staining is required.
Specialty FormulationsCustom corrosion-inhibitor and metal-treatment formulations.
Available Grades & Specifications
Tolyltriazole can be supplied according to the specification required for the intended application.
Potential specifications may include:
Technical grade
Industrial grade
High-purity grade
Application-specific grade
Typical commercial specifications may include assay, moisture, ash, melting range and physical-form requirements.
UAB An Group Export does not assign a fixed purity specification to this product unless confirmed by the applicable supplier documentation.
The actual product specification should be verified using the CoA and TDS supplied for the relevant batch.

