Description

Supporting Agent in Gold Extraction

While sodium cyanide plays the main role in gold leaching, sodium hydroxide, also known as caustic soda, is used to support cyanidation by adjusting the pH level of the leaching solution. A higher pH reduces the consumption of cyanide and prevents the release of toxic hydrogen cyanide gas.

Basic Information

• Content: 99%
• Chemical Formula: NaOH
• Molecular Weight: 40.00
• CAS Number: 1310-73-2
• EINECS Number: 215-185-5

Physical & Chemical Properties

• Appearance: White crystalline powder
• Density: 2.13 g/cm³
• Melting Point: 318°C
• Boiling Point: 1388°C
• Critical Pressure: 25 MPa
• Saturated Vapor Pressure: 0.13 kPa (739°C)

Storage Guidelines

• Store in a cool, dry, and well-ventilated warehouse
• Keep away from fire and heat sources
• Storage temperature: ≤35°C; Relative humidity: ≤80%
• Packaging must be sealed and waterproof
• Keep away from acids and combustibles
• Use appropriate containment materials in storage areas to prevent contamination

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