SODIUM SULPHATE ANHYDROUS (SSA)

Sodium sulphate anhydrous (SSA) is an inorganic compound with the chemical formula Na2SO4. It is a white, inorganic, crystalline solid that is widely used for its versatile properties in various industries such as detergents, glass, textile, pulp and paper, and various chemicals industry.

Formula: Na2SO4

Molar mass: 142.04 g/mol

Density: 2.664 g/cm3

Solubility in water: 28.1 g/100 mL (25 °C)

Appearance: White crystalline solid

Flash point: Non-flammable

Melting point: 884 °C (1,623 °F;1,157K)

Uses of SSA:

1. Detergents and Cleaning Products: SSA is a key ingredient in many laundry detergents and cleaning products. It acts as a filler and flow agent, enhancing the cleaning efficiency and stability of the formulations.

2. Glass Manufacturing: Sodium sulfate anhydrous is used in the production of glass to improve the melting properties and reduce the required energy during the manufacturing process. It also helps to control the viscosity and prevent crystallization of the glass.

3. Textile Industry: SSA is utilized in the textile industry as a leveling agent and dye auxiliary. It helps to improve the absorption and evenness of dyes on fabric, resulting in more vibrant and uniform colors.

4. Pulp and Paper Industry: In the pulp and paper industry, SSA is used as a cooking additive to break down the lignin in wood pulp during the pulping process. It helps to improve the yield and quality of the paper.

5. Chemical Industry: Sodium sulfate anhydrous is used as a raw material in the production of various chemicals, including sodium sulfide, sodium silicate, and sodium carbonate. It also serves as a drying agent in chemical reactions and as an electrolyte in certain electrolytic processes.

Properties of SSA:

1. Solubility: Sodium sulfate anhydrous is highly soluble in water. However, it is less soluble in organic solvents.

2. pH: In aqueous solutions, SSA is neutral with a pH of around 7.

3. Hygroscopicity: SSA has hygroscopic properties, meaning it can absorb moisture from the surrounding environment.

4. Melting Point: The melting point of sodium sulfate anhydrous is approximately 884 degrees Celsius (1,623 degrees Fahrenheit).

Production:

Sodium sulfate anhydrous can be produced through two main processes:

1. Salt Cake Process: This involves the reaction of sodium chloride (salt) with sulfuric acid to produce sodium sulfate. The resulting sodium sulfate is then dehydrated to obtain sodium sulfate anhydrous.

2. Glauber's Salt Process: This process involves the reaction of sodium carbonate (soda ash) with sulfuric acid to produce sodium sulfate. The resulting sodium sulfate is then dehydrated to obtain sodium sulfate anhydrous.

Potential Risks:

1. Eye and Skin Irritation: Direct contact with sodium sulfate anhydrous may cause irritation to the eyes and skin. It is important to handle it with proper protective equipment.

2. Environmental Impact: Large quantities of sodium sulfate anhydrous released into the environment can contribute to water pollution and harm aquatic life. It is essential to handle and dispose of it responsibly, following local regulations and guidelines.

3. Health Concerns: Ingestion or inhalation of high concentrations of SSA can be harmful to human health. It is important to avoid unnecessary exposure and follow safety precautions when working with this compound.

Synonyms of Sodium Sulphate Anhydrous (SSA):

  • Sodium Sulphate

  • Sodium Sulphate Dried

  • Sodium Sulphate Dehydrated

  • Sodium Sulfate

  • Sodium Sulfate Anhydrous

  • Glauber's Salt

  • Sal Mirabilis