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 a strong hygroscopic property, easily deliquescent in humid air. Sodium carbonate can be categorized into industrial-grade and food-grade, and further divided into light-duty and heavy-duty based on bulk density. There are also byproduct soda, floor soda, and common soda, etc.

Usage

Industrial-grade:

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

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

③ Sodium carbonate solutions, due to hydrolysis, are alkaline and can undergo saponification with oil污, making them suitable for use in the production of detergents.

④ Fat removal for raw hides in leather processing, neutralization of chrome-tanned leather, and increase the viscosity of chrome tanning solution.

⑤ 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 cakes and bread products.

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

Sodium carbonate