Description

5-Methyl-1H-Benzotriazole is a versatile heterocyclic organic compound belonging to the benzotriazole class, widely recognized for its role as a high-performance corrosion inhibitor and metal deactivator. Its primary value lies in its ability to form stable, protective films on metal surfaces, particularly copper and its alloys, preventing tarnishing and degradation in various environments. This makes it an essential additive for manufacturers in the metalworking, automotive, and electronics industries, where protecting components from corrosion is critical for product longevity and reliability.

Application

• Metalworking Fluids & Coolants: A key additive to prevent corrosion of copper, brass, and other non-ferrous metals in cutting oils, grinding fluids, and hydraulic systems.
• Automotive Antifreeze/Coolants: Used as a copper corrosion inhibitor in engine coolants to protect radiators and heat exchangers.
• Industrial Water Treatment: Employed in closed-loop cooling water systems and boiler water treatment to control metal ion corrosion.
• Electroplating & Surface Finishing: Acts as a brightener and leveling agent in electroplating baths for copper and zinc alloys.
• Polymer Stabilization: Functions as a UV stabilizer and antioxidant in plastics and synthetic materials to enhance durability.
• Fuel & Lubricant Additives: Incorporated into fuels and lubricating oils to deactivate metal ions and prevent catalytic degradation.
• Photographic Chemicals: Used in photographic developers and fixers as an antifogging agent.
• Chemical Synthesis Intermediate: Serves as a building block in the synthesis of more complex pharmaceutical and agrochemical compounds.

Basic Information

Product Name	5-Methyl-1H-Benzotriazole
CAS No.	136-85-6
Molecular Formula	C7H7N3
Molecular Weight	133.15 g/mol
Synonyms	5-Methylbenzotriazole; TTA; Tolyltriazole; Methylbenzotriazole; 5-Methyl-1,2,3-benzotriazole; 5-Methyl-BTA; Cobratec® TT-100; 1H-Benzotriazole, 5-methyl-; NSC 9385
EINECS	205-265-8

Quality Control

Our 5-Methyl-1H-Benzotriazole is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and related substances, to meet stringent industry specifications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The product is stable under recommended conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 99.0%
Melting Point	80 - 84 °C
Loss on Drying	≤ 0.5%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.