Description

4-Methyl-1H-Benzotriazole is a versatile heterocyclic organic compound belonging to the benzotriazole class of corrosion inhibitors and metal deactivators. This high-purity chemical is essential for protecting copper and its alloys from tarnishing and degradation in various demanding environments. It is a critical raw material for formulators in the metalworking, cooling water treatment, and automotive industries, where reliable corrosion protection is paramount for system longevity and performance.

Application

• Primary Copper Corrosion Inhibitor in industrial cooling water systems, closed heating/cooling loops, and HVAC applications.
• Key Component in Metalworking Fluids and lubricants to prevent staining and corrosion of copper and brass parts during machining and storage.
• Antifreeze and Coolant Additive for automotive and heavy-duty engines to protect radiator and heater core metals.
• Synergistic Agent in Multi-metal Inhibitor Blends, often combined with tolyltriazole and other azoles for enhanced protection.
• Surface Treatment for Copper and Brass to provide a protective film against atmospheric tarnishing and oxidation.
• Additive in Electroplating Baths and chemical polishing solutions to improve finish quality.
• Stabilizer and Antioxidant in certain polymer and photographic chemical formulations.

Basic Information

Product Name	4-Methyl-1H-Benzotriazole
CAS No.	29878-31-7
Molecular Formula	C7H7N3
Molecular Weight	133.15 g/mol
Synonyms	4-Methylbenzotriazole; 4-Methyl-1,2,3-benzotriazole; Tolyltriazole (mixed isomers); TTA; 4-MBT; 4-Tolyltriazole; 1H-Benzotriazole, 4-methyl-; Cobratec® TT-100 (component)
EINECS	249-932-2

Quality Control

Our production of 4-Methyl-1H-Benzotriazole adheres to stringent quality management protocols to ensure batch-to-batch consistency and high performance. The material is manufactured and tested to meet the exacting standards required for industrial corrosion inhibition. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and physical parameters is provided with each shipment to guarantee supply reliability and technical compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.5%
Melting Point	80 - 84 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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