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Sodium Carbonate

Synonyms

Carbonic acid disodium salt; Soda ash; SODIUM CARBONATE; Disodium carbonate; SODIUM CARBONATE (ANHYDROUS)

Description

Sodium Carbonate is a white, odorless powder or fine granule (anhydrous pure product) with a saline taste. It is stable at room temperature, hygroscopic and prone to caking, and partially converted into sodium bicarbonate. Its aqueous solution is strongly alkaline (pH ≈ 11.6). It is an inorganic salt of strong base and weak acid. Industrially, it is classified into light grade (bulk density: approximately 0.5~0.6 g/cm³) and dense grade (bulk density: approximately 1.0~1.2 g/cm³).

Physical&Chemical Properties

Molecular Formula:Na2CO3
Density:2.5g/cm³
Boiling Point:
Solubility:
Freely soluble in water, insoluble in organic solvents such as ethanol and diethyl ether.

Molecular Weight:106.0g/mol
Flash Point:
Melting Point:851℃

Uses

1. Glass industry: Key raw material for the production of flat glass, container glass and optical glass (largest consumption)

2. Chemical raw materials: Preparation of sodium salts, sodium bicarbonate, sodium phosphate, sodium silicate, etc.

3. Detergent & daily chemicals: Synthetic detergents, soap, water softener

4. Paper making & printing & dyeing: Pulping, deinking, fabric scouring and neutralization

5. Water treatment: pH adjustment and softening of industrial wastewater

6. Food industry: Food-grade product used for dough improvement, acidity regulation and fermentation aid (compliant with GB 2760)

7. Metallurgy & building materials: Mineral processing, desulfurization, dephosphorization, ceramic glazes, refractory materials

Safety,Security&Risk

Chemical Hazards

The aqueous solution is a moderately strong base.It reacts violently with acids, producing heat and carbon dioxide.It reacts with magnesium, phosphorus pentoxide, calcium hypochlorite and calcium, with a risk of explosion.It reacts with fluorine, with a risk of ignition.When heated above 400 °C, it decomposes to form sodium oxide and carbon dioxide.

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