Sodium Benzotriazole(BTA.Na) CAS 15217-42-2 Premium Copper Corrosion Inhibitor
Sodium Benzotriazole, commonly known as BTA•Na, is a highly effective, water-soluble metal corrosion inhibitor specifically engineered for copper and copper-based alloys (such as brass and bronze). By forming an ultra-thin, dense protective polymeric film directly on the metal surface, BTA•Na effectively isolates the metal from atmospheric oxygen, moisture, and aggressive corrosive media.
As a leading global chemical supplier, we provide premium-grade liquid BTA•Na formulations designed to maximize heat transfer efficiency and extend equipment lifespan. It is widely used as a cornerstone additive in industrial water treatment, automotive coolants, metalworking fluids, and specialized coatings.
- Superior Copper Protection: BTA•Na specifically chemisorbs onto copper surfaces, providing a microscopic barrier against pitting corrosion and surface oxidation.
- Anti-Discoloration & Anti-Tarnish: Effectively prevents the tarnishing, browning, and discoloration of copper parts during storage, processing, or operational cycles.
- Excellent Synergistic Effects: When combined with scale inhibitors, biocide dispersants, and other zinc/molybdate corrosion inhibitors, it provides an elevated compound protective effect in multi-metal systems.
- Galvanic Corrosion Prevention: Prevents copper ions from dissolving into circulating water, which drastically reduces the risk of copper-induced galvanic pitting on adjacent aluminum or steel components.
- Glycol Fluid Oxidation Stabilizer: Prevents ethylene glycol or propylene glycol systems from turning acidic under high-temperature catalytic oxidation conditions.
Sodium Benzotriazole Description
Name: Sodium Benzotriazole(BTA.Na)
Synonyms: 1,2,3-Benzotriazole sodium salt / Benzotriazole sodium salt / 1H-Benzotriazole sodium salt
Molecular Formula: C6H4N3Na
Molecular Weight: 141.11
CAS NO.: 15217-42-2
Density: 1.13-1.19 g/ml(24 C).
Boiling point: 276.1ºC at 760 mmHg
Melting point: -15ºC
Flashing point: 133.9ºC
Appearance: Pale yellow to yellow transparent liquid
Package: Shipped in heavy-duty 200L plastic drums or 1000L IBC totes. Custom wholesale container sizing can be arranged based on procurement requirements.
Storage: Store in a cool, dark, dry, and well-ventilated warehouse. Keep containers tightly closed when not in use.
Shelf Life: 6 months under standard recommended shady and dry conditions.
Safety protection:
- BTA•Na liquid is an alkaline formulation. Industrial operators must wear appropriate personal protective equipment (PPE), including chemical safety goggles and protective rubber gloves.
- Avoid direct inhalation of vapors and any contact with skin or eyes. In case of accidental contact, flush the affected area immediately with an abundance of clean running water and seek professional medical attention if irritation persists.
Benzotriazole sodium salt Technical
Our Sodium Benzotriazole liquid meets rigorous quality standards to ensure exceptional stability and performance in diverse chemical formulations.
| Item | Index |
| Appearance | Pale yellow to yellow transparent liquid |
| Active content(wt) % | 50.0min |
| Density (20℃), g/cm3 | 1.20 min |
BTA•Na Applications
- Industrial Circulating Cooling Water: Extensively used in power plant cooling loops, nuclear reactor thermal systems, and chemical processing facilities. An operational dosage of 2–4 mg/L is typically recommended.
- Automotive & Engine Antifreeze: Added directly to glycol-based engine coolants and solar energy heat-transfer loops to protect copper radiators, heaters, and tubing from internal degradation.
- Metalworking Fluids & Lubricants: Serves as a critical anti-wear and anti-corrosion additive in cutting oils, grinding fluids, and industrial lubricating oils.
- Surface Coatings & Polishes: Incorporated into specialty metal coatings, lacquers, and industrial cleaning solutions to provide temporary or long-term rust prevention for non-ferrous metals.
Commercial FAQs for BTA•Na
Q1: What is the cross-reference or market equivalent for your liquid BTA•Na?
A1: Our premium 50% active Sodium Benzotriazole solution is commercially equivalent to international trade standards like COBRATEC 40S. It serves as a direct drop-in replacement in industrial water treatment and additive formulations.
Q2: Can BTA•Na protect metals other than copper?
A2: While BTA•Na is uniquely highly effective for copper, brass, and bronze, the protective film it creates also provides secondary protection for multi-metal systems containing silver, zinc, aluminum, and cast iron by stabilizing the overall chemical environment.
Q3: Do you offer bulk discounts or contract manufacturing?
A3: Yes. As a fully certified factory, we provide highly competitive wholesale pricing tiers and exclusive discounts for large-volume contract orders, significantly optimizing your supply chain and procurement costs.
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