Sodium CarbonateSodium carbonate, commonly known as soda ash, alkali, 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 according to its bulk density, it can be divided into light-duty and heavy-duty varieties. Additionally, there are byproduct alkalis, fallen alkalis, and common alkalis, among others.

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 reduces the飞扬 of alkali dust, decreases raw material consumption, saves costs, and also lessens the erosion of alkali powder on refractory materials, thereby extending the service life of kilns.

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

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 out 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.

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