chún jiǎn It is classified as a salt, not a base. Also known as soda or soda ash in international trade. It is an important inorganic chemical raw material, mainly used in the production of flat glass, glass products and ceramic glaze. It is also widely used in life washing, acid neutralization and food processing, etc. It is a basic chemical raw material, and is widely used in medicine (medical treatment of excessive stomach acid), paper making, metallurgy, glass, textile, dyes and other industries, and is used as a starter in food industry.

Melting point: 851℃

Boiling point: 1600°C

Decomposition temperature: 1744℃

Density: 2.532g/cm³   

Molecular weight: 105.99

CAS number: 497-19-8   

Chemical formula: Na2C03

EINECS number: 207-838-8:231-867-5