Anhydrous sodium carbonate

Description

Apearances: White powder, odorless. Alkaline taste. Hygroscopicity. Exposed in air gradually absorbed 1mol / L water (about 15%). Began to lose carbon dioxide at 400 ℃. Case of acid decomposition and effervescence. Soluble in water (3.5 parts room temperature, 35 ° C when 2.2 parts) and glycerol, insoluble in alcohol. The aqueous solution was strongly alkaline pH11.6. The median lethal dose (30) (mice, intraperitoneal) 116.6mg/kg. Irritation.

USES

Industrial soda ash, mainly light industry, building materials, chemical industry, accounting for about 2/3: Second metallurgy, textile, oil, defense, pharmaceutical and other industries. Soda glass industry is the photo of a large consumer sector, the glass consumption per ton of soda ash O.2t. Chemical industry for manufacturing sodium silicate, sodium dichromate, sodium nitrate, sodium fluoride, baking soda, borax, trisodium. Metallurgical industry for smelting flux, dressing flotation agent, steel and antimony used as a desulfurization agent. Printing and dyeing industry as a water softener. The leather industry for degreasing of raw hides, in chrome-tanned leather and chrome tanning liquid caustic soda. Also for the production of synthetic detergent additive, sodium tripolyphosphate and other sodium salt.

Keywords:Surface treatment chemicals

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