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Sodium carbonate as white powder or granular. No smell. There are basic. Is alkaline salt. Absorbent. Exposed to air gradually absorbed 1mol/L water ( about 15% ). 400 centigrade began losing carbon dioxide. Case of acid decomposition and effervescent. Soluble in water ( room temperature 3.5, 35 centigrade 2.2 ) and glycerol, do not dissolve in alcohol. Presenting strong alkaline solution, pH11.6. The relative density of 2.53. The melting point of 851 DEG C. The median lethal dose ( 30 ) ( 116.6mg/kg mice, intraperitoneal). Irritation. By sodium hydroxide and carbonate chemical reactions occur together.

Sodium carbonate is an important chemical raw material, widely used in light industry, chemical industry, building materials, food industry, metallurgy, textile, petroleum,, defense, medicine and other fields, to be used in the manufacture of other chemicals, cleaning agents, detergents, is also used in photography and analysis field.