Sodium Acetate Trihydrate SAT CAS 6131-90-4

Alkalinity: As a salt of a strong base and a weak acid, its aqueous solution is mildly alkaline, making it an excellent buffering agent.

Acid Reaction: It reacts readily with strong acids (such as hydrochloric acid or sulfuric acid) to generate acetic acid and the corresponding sodium salt.

Thermal Reaction: It absorbs heat during the melting process. When heated to 120°C, it loses its water of crystallization to become Anhydrous Sodium Acetate, and undergoes full decomposition at temperatures above 324°C.

Specifications

Applications

Sodium Acetate Trihydrate is a versatile chemical utilized across various industries:

• Phase Change Material (Energy Storage / Heat Pads): Acts as a latent heat storage material. When its supersaturated solution crystallizes, it releases significant exothermic heat, making it the core ingredient in reusable hand warmers and medical heating pads.
• Textile & Dyeing Industry: Used as a buffering agent and to neutralize sulfuric acid waste streams. It helps maintain the optimal pH, ensuring even color distribution and protecting fabrics during the dyeing process.
• Leather Tanning: Functions as a masking agent in chrome tanning, neutralizing acids and improving the quality and flexibility of the leather.
• Concrete Sealing: Added to concrete mixtures to mitigate water damage and act as an environmentally friendly sealant.
• Food Industry: Operates as an effective acidity regulator and preservative (E262) to extend shelf life.

Storage Conditions

• Environment: Store in a cool, dry, and well-ventilated area away from direct sunlight.
• Temperature: Maintain ambient temperatures below its melting point (58°C) to prevent liquefaction.
• Sealing: Keep containers tightly closed. The product is efflorescent and will lose its water of crystallization if exposed to warm, dry air for prolonged periods.
• Incompatibilities: Store separately from strong oxidizing agents and strong acids.

Handling & Usage Precautions

• Personal Protection: Wear appropriate protective gear, including chemical-resistant gloves, safety goggles, and a dust mask when handling bulk quantities to prevent skin and eye irritation.
• Ventilation: Ensure adequate ventilation in the work area to prevent the accumulation of dust.
• Handling: Handle containers gently to avoid bag punctures or drum damage. Do not breathe in the powder/dust.
• Hygiene: Wash hands and exposed skin thoroughly with soap and water after handling.

Common Formulations & Effects

• Formulation 1: Supersaturated Heat Pack Solution
  • Formula: High-concentration Sodium Acetate Trihydrate dissolved in minimal boiling water.
  • Effect: Creates an unstable supersaturated solution. When triggered, it rapidly crystallizes, providing a sustained, controlled release of heat (up to ~54°C/130°F).
• Formulation 2: Acetate Buffer Solution
  • Formula: A calculated mixture of Sodium Acetate Trihydrate and Acetic Acid.
  • Effect: Stabilizes the pH level within a mildly acidic range (pH 3.6 to 5.6). Crucial for biochemical applications, textile dyeing, and electroplating processes to prevent erratic pH fluctuations.

Packaging Options

Package: Fiber drum or carton box, lined with PE bag. Customized packaging available upon request.