Sodium CarbonateSodium carbonate, commonly known as soda ash, soda lime, and alkali powder, is a white powder and fine-grained crystalline substance. Its aqueous solution is alkaline, and it has a strong hygroscopic property, readily absorbing moisture from the air and becoming deliquescent. Sodium carbonate is categorized into industrial-grade and food-grade, and can be further divided into light and heavy grades based on bulk density. Additionally, there are byproduct soda, floor soda, and common soda, among others.

Usage

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, extending the lifespan of the kiln.

Sodium carbonate solutions, due to hydrolysis, exhibit alkalinity and can undergo saponification with oil污, making them suitable for use in detergent production.

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

⑤ Soda ash is used in papermaking as a buffering agent to dissolve lignin, allowing cellulose to disperse into pulp.

Food-grade:

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

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

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