High Purity White Crystal Suitable Sodium Acetate for Heavy Metal Removal

• Chemical formula: CH₃COONa
• Molecular weight: 82.03 g/mol (anhydrous matter); 136.08 g/mol (trihydrate)
• Structure: Composed of the radical acetate ion (CH₃COO⁻) and sodium ion (Na +)
• pH value: The aqueous solution is weakly alkaline, pH is about 8-9

• Appearance: Anhydrous sodium acetate: white crystalline powder. Sodium acetate trihydrate (CH₃COONa*3H₂O): colorless transparent crystal
• Solubility: Soluble in water, solubility increases significantly with temperature (at 20°C, about 46.5 g per 100 mL of water). Slightly soluble in ethanol, insoluble
• Melting point: Anhydrous sodium acetate: 324°C. Sodium acetate trihydrate: 58°C (dehydration decomposition)
• Density: Anhydrous sodium acetate: 1.528 g/cm³. Sodium acetate trihydrate: 1.45g/cm³
• Hygroscopic: Sodium acetate trihydrate is easy to hygroscopic, and anhydrous sodium acetate hygroscopic is low

Heated decomposition. When heated to high temperatures, sodium acetate decomposes to form sodium carbonate (Na₂CO₃) and methane (CH₄)

Principle of action: Sodium acetate can react with some heavy metal ions (such as lead, chromium, copper, zinc etc.) to form insoluble precipitates.

Application scenario: Electroplating wastewater treatment: remove lead, chromium, copper and other heavy metal ions in electroplating wastewater. Metallurgical wastewater treatment: remove zinc, nickel and other heavy metal ions in metallurgical wastewater.

Principle of action: Sodium acetate aqueous solution is weakly alkaline and can be used to regulate the pH value of wastewater. Proper pH value is conducive to the formation of hydroxide precipitation of heavy metal ions.

Application scenario: Comprehensive wastewater treatment: Adjust the pH value of wastewater to promote the precipitation of heavy metal ions.

Principle of action: Sodium acetate can form soluble complexes with some heavy metal ions and change its chemical properties.

Application scenario: Complex wastewater treatment: Used to treat complex wastewater containing a variety of heavy metal ions.

Principle of action: Sodium acetate can be used as a flocculating agent to enhance the effect of flocculants (such as polyaluminum chloride, polyacrylamide).

Application scenario: Industrial wastewater treatment: used to improve the removal rate of heavy metals in flocculation precipitation process.