Description

Sodium Benzotriazole is the sodium salt derivative of benzotriazole, a highly effective heterocyclic corrosion inhibitor and metal deactivator. This compound is valued for its superior solubility in aqueous systems compared to its parent compound, enabling broader formulation flexibility. It is primarily utilized in industries requiring robust protection for copper and copper alloy surfaces against tarnishing, corrosion, and oxidative degradation.

Application

• Metalworking Fluids & Coolants: A key additive to protect machinery and parts made from copper, brass, and bronze from corrosion during machining and storage.
• Antifreeze & Automotive Coolants: Used as a corrosion inhibitor in engine cooling systems to safeguard radiator components, especially those containing copper and solder.
• Industrial Water Treatment: Employed in closed-loop cooling and heating systems to prevent scale and corrosion on metal surfaces, extending equipment life.
• Plating & Surface Treatment: Acts as a brightener and leveling agent in electroplating baths for copper and its alloys.
• Polymer Stabilization: Functions as a metal deactivator in plastics and synthetic fibers to prevent catalytic degradation caused by residual metal ions.
• Photographic Chemicals: Used in developing and fixing solutions as an anti-foggant and stabilizer.
• Fuel & Lubricant Additives: Incorporated to prevent corrosion of copper-containing components in fuel systems and lubricating oils.

Basic Information

Product Name	Sodium Benzotriazole
CAS No.	15217-42-2
Molecular Formula	C6H4N3Na
Molecular Weight	141.11 g/mol
Synonyms	1H-Benzotriazole, sodium salt; Benzotriazole sodium salt; Sodium 1H-benzotriazol-1-ide; BTA-Na; NaBTA; Cobratec® TT-50-S; Corrosion Inhibitor 5; Copper Corrosion Inhibitor Sodium Salt
EINECS	239-243-8

Quality Control

Our Sodium Benzotriazole is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters are provided to guarantee consistent quality and supply reliability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
pH (5% aqueous solution)	10.0 - 12.0
Loss on Drying	≤ 2.0%
Water Solubility	Completely soluble

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