Sodium CarbonateSodium carbonate, commonly known as soda ash, soda lime, or alkali powder, is a white powder and fine-grained crystalline substance. Its aqueous solution is alkaline, and it has strong hygroscopic properties, easily absorbing moisture in humid air and becoming deliquescent. Sodium carbonate can be categorized into industrial-grade and food-grade, and further divided into light and heavy grades based on bulk density. There are also byproduct alkalis, floor alkalis, and common alkalis, etc.

Application

Industrial-grade:

Glass production is the primary industrial consumer of soda ash, widely used in float glass, picture tube glass shells, optical glass, etc., and can also act as a clarifying agent to remove bubbles from the glass melt.

②High-purity soda ash can reduce the scattering of alkali dust, decrease raw material consumption, save costs, and also mitigate the erosion of alkali powder on refractory materials, thereby extending the service life of the kiln.

③ Sodium carbonate solution, due to hydrolysis, is alkaline and can undergo saponification with oil污, used in the production of detergents.

④ Used for defatting raw hides in leather processing and neutralizing chrome-tanned leather to increase the viscosity of the chrome-tanning solution.

Soda ash is used in papermaking as a buffering agent to leach lignin, allowing cellulose to disperse into pulp.

Food-grade:

Food-grade soda ash can be used as a buffer, neutralizer, and dough conditioner for bakery and pasta products.

② Lye water, also known as alkali water, is a compound food additive traditionally used as a辅料 in Cantonese-style pastries.

Sodium Carbonate for Industrial Use