Benzotriazole with CAS 95-14-7
What is Benzotriazole?
Benzotriazole (BTA), also known as 1H-Benzotriazole, is a heterocyclic organic compound with the molecular formula C₆H₅N₃ and CAS number 95-14-7. It consists of a benzene ring fused with a 1,2,3-triazole ring, giving it unique chelating properties toward metal surfaces — particularly copper and copper alloys.
Originally developed as a corrosion inhibitor, Benzotriazole has evolved into a multi-functional additive widely used in industrial chemistry, coatings, and polymer stabilization. It forms a tight, monomolecular protective film on metal surfaces, dramatically reducing oxidation and corrosive attack even in harsh environments.
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Product Advantages
- Excellent Corrosion Inhibition: Forms a stable, monomolecular chemisorbed protective film on copper, brass, bronze, and ferrous metals.
- Wide Temperature Stability: Effective across a broad temperature range, stable at elevated temperatures.
- Multifunctional Metal Deactivator: Acts as both a corrosion inhibitor and metal deactivator, chelating free copper ions that otherwise catalyze oxidative degradation in oils and lubricants.
- UV Absorption Capability: Exhibits UV-absorbing properties, making it a valuable co-stabilizer in polymer and coating systems to prevent photo-degradation of substrates and pigments.
Benzotriazole Quick details
- Chemical Name:Benzotriazole
- CAS No.: 95-14-7
- EINECS: 202-394-1
- Molecular Formula:C6H5N3
- Molecular weight:119.12
- Appearance:White needle,flake,granule,powder
- Purity:99.5%min
- Synonyms:1,2,3-benzotriazole-1h-benzotriazole;1,2,3-Benztriazole;1,2,3-Triaza-1H-indene;1,2,3-Triazaindene;Benzotriazole,99%;1H-Benzotriazole,99+%;1,2,3-Benzotriazole,1H-benzo[d][1,2,3]triazole;1H-Benzotriazole
Benzotriazole Typical Properties
| Item | Specification | Results |
| Appearance | White needle,flake,granule,powder | Conforms |
| Purity | ≥99.5% | 99.92% |
| Melting point | 97-99.5℃ | 98.32℃ |
| Moisture | ≤0.1% | 0.02% |
| Ash content | ≤0.05% | 0.02% |
| PH | 5.0-6.0 | 5.65 |
| Conclusion | The results conforms with enterprise standards | |
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Benzotriazole Applications
- Antifreeze & Coolants: Protects copper and brass components in automotive and industrial cooling systems. Standard additive in ethylene glycol- and propylene glycol-based antifreeze formulations.
- Lubricants & Hydraulic Fluids: Used as a metal deactivator and anti-corrosion additive in gear oils, turbine oils, compressor oils and hydraulic fluids to protect yellow metal parts.
- Metalworking Fluids: Added to cutting fluids, grinding fluids, and rust preventives to inhibit corrosion on machined copper alloy workpieces and machine tool surfaces.
- Electroplating & PCB Industry: Applied in PCB manufacturing as a surface treatment for copper traces. Prevents oxidation of copper surfaces before soldering or further plating processes.
- Water Treatment: Dosed in recirculating cooling water systems to prevent copper and brass corrosion in heat exchangers, chillers, and HVAC systems.
- Coatings & Polymers: Functions as a UV stabilizer and metal deactivator in paints, varnishes, and polymer compounds to extend service life of coated metal substrates.
- Photography & Silver Protection: Historically used in photographic processing to protect silver image layers from tarnishing. Also applied in silver polishes and tarnish-inhibiting coatings.
Benzotriazole Package & Storage
- Package:25kg/bag; 25kg/drum
- Storage: Store in a cool place and keep it sealed to avoid direct sunlight.
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