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Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is the sodium salt form of benzotriazole, a widely used corrosion inhibitor.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is valued for its strong ability to protect copper, brass, and other non-ferrous metals against oxidation and corrosion.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is used in metalworking, cooling water systems, and as an additive in industrial cleaners, coatings, and lubricants.
CAS Number: 65717-13-9
EC Number: 265-004-9
Molecular Formula: C6H4N3Na
Molecular Weight: 141.11 g/mol
Synonyms: Sodium Benzotriazolate, Benzotriazole Sodium Salt, BTA·Na, Na-Benzotriazole, Sodium 1,2,3-Benzotriazole, Sodium Salt of Benzotriazole, BTA Sodium, Sodium Benzotriazolide, BTA-Na Corrosion Inhibitor, Sodium Benzotriazole Solution, Sodium Salt of 1H-Benzotriazole, Sodium Salt of 1,2,3-Benzotriazole, BTA·Na, Sodium Benzotriazolate, Sodium 1,2,3-Benzotriazolate, Sodium Benzotriazole, Sodium Benzotriazolide, Sodium Salt of Benzotriazole, Sodium Benzotriazol, Sodium Benzotriazolate Monohydrate, Sodium Benzotriazolate Hydrate, Sodium Benzotriazolate Anhydrous, Sodium Benzotriazolate Solid, Sodium Benzotriazolate Powder, Sodium Benzotriazolate Granular, Sodium Benzotriazolate Crystals, Sodium Benzotriazolate Solution, Sodium Benzotriazolate Aqueous, Sodium Benzotriazolate Reagent, Sodium Benzotriazolate Analytical, Sodium Benzotriazolate Laboratory, Sodium Benzotriazolate AR Grade, Sodium Benzotriazolate CP Grade, Sodium Benzotriazolate ACS Grade, Sodium Benzotriazolate Extra Pure, Sodium Benzotriazolate High Purity, Sodium Benzotriazolate Technical Grade, Sodium Benzotriazolate Industrial Grade, Sodium Benzotriazolate Specialty Chemical, Sodium Benzotriazolate Certified Reagent, Sodium Benzotriazolate Research Grade, Sodium Benzotriazolate Standard, Sodium Benzotriazolate Compound, Sodium Benzotriazolate Salt, Sodium Benzotriazolate Additive, Sodium Benzotriazolate Material, Sodium Benzotriazolate Raw Material, Sodium Benzotriazolate Bulk Chemical, Sodium Benzotriazolate Fine Chemical, Sodium Benzotriazolate Technical Product, Sodium Benzotriazolate Stabilized
APPLICATIONS
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is used in metalworking fluids as a corrosion inhibitor.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) protects copper and brass components from tarnishing.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) improves long-term stability of metal surfaces.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is applied in cooling water systems.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) prevents corrosion of copper and alloy heat exchangers.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is used in closed-loop cooling and boiler systems.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is employed in antifreeze formulations.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) protects automotive cooling systems from corrosion.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) enhances durability of engine and radiator components.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is included in cleaning and detergent formulations.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) prevents corrosion of copper pipes during cleaning.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) stabilizes metal surfaces in alkaline and neutral cleaners.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is used in lubricants and oils.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) improves corrosion resistance of automotive and industrial lubricants.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) enhances long-term storage stability of lubricated parts.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is applied in electroplating and metal finishing.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) provides passivation of copper surfaces.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) reduces staining during plating.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is incorporated in polymer and coating systems.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) enhances corrosion resistance of epoxy and polyurethane coatings.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) prolongs outdoor durability of coated metal surfaces.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is used in electronics and circuit board protection.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) prevents oxidation of copper circuitry.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) reduces failure risk in humid environments.
DESCRIPTION
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is a light yellow to brown crystalline powder or aqueous solution.
It is odorless and highly soluble in water, alcohols, and glycol systems.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is the sodium salt derivative of benzotriazole, providing better water solubility.
It acts by forming a protective coordination complex layer on copper and alloy surfaces.
This protective film prevents oxidation, tarnish, and corrosive attack.
It is stable under a wide pH range but performs best in neutral to slightly alkaline solutions.
Sodium Salt of 1,2,3-Benzotriazole (BTA·Na) is compatible with other corrosion inhibitors like tolyltriazole.
It is non-volatile and provides long-lasting protection in closed systems.
It is widely considered safer to handle compared to hydrofluoric acid-based inhibitors.
It remains one of the most effective copper corrosion inhibitors used in industry.
PROPERTIES
Chemical Formula: C6H4N3Na
Molecular Weight: 141.11 g/mol
Common Name: Sodium Benzotriazolate (BTA·Na)
Appearance: Light yellow to brown crystalline powder or aqueous solution
Odor: Odorless
Density: ~1.25 g/cm³ (solution form)
Melting Point: >300°C (decomposes)
Boiling Point: Not applicable (salt form)
Solubility: Highly soluble in water, glycols, alcohols
pH (1% solution): ~10–11
Reactivity: Forms coordination complexes with copper and alloys
Chemical Stability: Stable under normal storage conditions
Storage Temperature: Store in cool, dry, well-ventilated place away from strong oxidizers
FIRST AID
Inhalation:
Move the person to fresh air immediately.
Seek medical attention if respiratory irritation persists.
Skin Contact:
Wash skin thoroughly with soap and water.
Seek medical advice if redness or irritation develops.
Eye Contact:
Rinse cautiously with water for at least 15 minutes.
Seek immediate medical attention if irritation continues.
Ingestion:
Rinse mouth with water.
Do not induce vomiting.
Seek medical advice immediately.
Note to Physicians:
Treat symptomatically.
HANDLING AND STORAGE
Handling:
Wear gloves, goggles, and protective clothing.
Avoid inhalation of dusts and contact with skin or eyes.
Wash hands after handling.
Storage:
Store in tightly sealed containers.
Keep in a cool, dry, well-ventilated area.
Protect from direct sunlight and humidity.
Spill and Leak Procedures:
Sweep or vacuum spilled powder using HEPA filters.
Avoid raising dust.
Dispose of according to local regulations.
