Sodium Carbonate - Soda ash ( Ammoniacal ) Sodium Carbonate Light

Sodium Carbonate (Light)
Other Names: Soda ash, Washing soda

CAS Number: 497-19-8
Sum Formula: Na₂CO₃
Molar Mass: 105.98 g/mol
Appearance: White, hygroscopic powder

Sodium carbonate (light) is an inorganic, basic salt commonly used as a laboratory reagent and for industrial applications. It is highly hygroscopic and soluble in water, forming a strongly alkaline solution. Light sodium carbonate differs from dense grades by having a lower bulk density, making it more suitable for applications where easy dispersion and solubility are important.

Chemical and Physical Properties
Density: ~2.53 g/cm³ (at 20°C)
Melting Point: 851°C
Boiling Point: Decomposes upon heating
Solubility in Water: 215 g/L at 20°C
Solubility in Other Solvents: Insoluble in alcohol and organic solvents
Odor: Odorless
pH (1% solution): ~11.6

Applications
Laboratory Reagent: Used for pH regulation, buffering, and as a basic reagent in chemical reactions.
Industrial Applications:

• Water treatment (softening hard water by precipitating calcium and magnesium).

• Glass manufacturing (flux for silica).

• Production of detergents, soaps, and cleaning agents.

• Chemical synthesis (as a source of carbonate ions).
  Textile and Dyeing Industry: Employed in fabric preparation and dye-fixing processes.

Safety

Signal Word: Warning

Handling and Storage
Storage Conditions:

• Store in a tightly closed container in a cool, dry, and well-ventilated place.

• Protect from moisture, as it is hygroscopic and absorbs water from the air.

• Keep away from acids (reacts with acids releasing carbon dioxide gas).

Handling Precautions:

• Avoid creating dust.

• Use appropriate PPE, including gloves and safety goggles, during handling.