Product show
Benzotriazole (BTA)
Identification
Synonyms: 1H-Benzotriazole; 1,2,3-Benzotriazole; BTA
CAS No.: 95-14-7 EC No.:
Molecular Weight: 119.13
Molecular Formula: C6H5N3
Structural Formula:
m.p.: 96~97°C
b.p. (15mm): 201~204°C
f.p.: 195°C
Preparation
Benzotriazole is industrially manufactured by the diazotization reaction of o-phenylenediamine, sodium nitrite and acetic acid, decribed as following: 
Application
Benzotriazole (BTA) is applied as anti-rusting agent or corrosion inhibitor for metal (mainly copper and its alloys) by forming a passive layer, consisting of a complex between copper and benzotriazole, when copper is immersed in a solution containing benzotriazole. The passive layer is insoluble in aqueous and many organic solutions. ,Also used as anti-freezing agent for car, synthetic detergent, anti-dust agent for photography and polymer stabilizer.
Specification*
| Items | Specification |
|---|---|
| Benzotriazole Content | 99.5% min. |
| Moisture | 0.05% max. |
| m.p. | 97~98°C min. |
| Clarity and Color in alcohol | transparent and no deposition |
| pH Value | 5.5~6.0 |
| Chroma | 40 max. |
| Ash | 0.03% max. |
| Appearance | white crystalline powder, or flake, or needle |
Standard Packaging
Needle grade: 20 kgs net/woven bag, 16mt/40' container
Risks and Safety Information
Benzotriazole (BTA) is regulated by UN as Toxic Solid, Organic. N.O.S. Hazard Class 6.1; UN 2811; PG III
Harmful by inhalation and if swallowed; wear suitable protective clothing, gloves; in case of insufficient ventilation, wear suitable respiratory equipment.
For more information, please see MSDS
