Benzotriazole (BTA)

Key Chemical Information

• Chemical Name: Benzotriazole

• Abbreviation: BTA

• CAS Number: 95-14-7

• Molecular Formula: C₆H₅N₃

• Appearance: White to light yellow crystalline powder

• Solubility: Slightly soluble in water, soluble in alcohols and organic solvents

  
  

Main Applications

1. Corrosion Inhibition

• Protection of copper, brass, and bronze surfaces

• Used in closed-loop cooling water systems

• Prevents oxidation and tarnishing of metal components

  
  

2. Metalworking & Industrial Fluids

• Additive in cutting fluids and metalworking oils

• Improves equipment lifespan and surface quality

  
  

3. Antifreeze & Heat Transfer Fluids

• Added to antifreeze formulations to protect copper-based systems

• Enhances corrosion resistance in HVAC and industrial cooling systems

  
  

4. Chemical & Specialty Applications

• Intermediate for dyes, pharmaceuticals, and specialty chemicals

• Used in photographic chemicals and industrial formulations

  
  

Product Advantages

• Highly effective corrosion protection for copper and alloys

• Forms durable and stable protective films

• Good thermal and chemical stability

• Effective at low dosage levels

• Suitable for industrial and technical-grade applications

  
  

Packaging & Storage

• Common packaging: fiber drums, paper bags, or customized packaging

• Store in a cool, dry, and well-ventilated area

• Keep containers tightly closed and protected from moisture

  
  

Frequently Asked Questions (FAQs)

Q1: What is Benzotriazole mainly used for?

A: Benzotriazole is mainly used as a corrosion inhibitor for copper and copper alloys in cooling systems, antifreeze, and metalworking fluids.

Q2: How does Benzotriazole protect metals?

A: It forms a thin, stable protective film on copper surfaces, preventing contact with corrosive agents such as oxygen and moisture.

Q3: Is Benzotriazole soluble in water?

A: It is slightly soluble in water and more soluble in alcohols and various organic solvents.

Q4: Can Benzotriazole be used in antifreeze formulations?

A: Yes, it is commonly used in antifreeze and heat transfer fluids to protect copper-based components from corrosion.

Q5: How should Benzotriazole be stored?

A: It should be stored in sealed containers in a dry, cool environment, away from moisture and direct heat.

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