Sodium metasilicate pentahydrate

Sodium metasilicate pentahydrate (chemical formula: Na2SiO3·5H2O) is an inorganic compound with the following characteristics and uses:

Chemical properties:
Sodium metasilicate pentahydrate is a slightly green or white powder, transparent block or viscous liquid
。
It is easily soluble in water and dilute alkali solution, insoluble in alcohol and acid, and its aqueous solution is alkaline
。
It has the functions of detergency, emulsification, dispersion, moisturizing, permeability and buffering ability for pH value
。
Non-toxic, tasteless, and environmentally friendly, but concentrated solutions can corrode fabrics and skin
。
Purpose:
1. Washing industry: widely used in super concentrated washing powder, detergent, metal cleaning agent, food industry cleaning agent, etc
。
2. Paper bleaching and cotton yarn steaming: used as a binder in the paper industry, a waste paper stripping ink agent, and a paper surface treatment agent
。
3. Construction industry: used as a coagulant for preparing acid-resistant mortar, acid-resistant concrete, and cement
。
4. Textile industry: as a printing and dyeing auxiliary agent, fabric pretreatment agent
。
5. Ceramic industry: increase the surface negative charge of inorganic clay particles, reduce the viscosity of ceramic slurry, and increase fluidity
。
6. Oil extraction: used as a mud consistency regulator and mud de-coagulant
。
7. Other uses: soap fillers, detergents, egg preservatives, as well as vegetation molecular sieves, silicic acid, and fireproof materials
。
The main functions of sodium metasilicate pentahydrate in the ceramic industry are as follows:

1. Reduce the viscosity of ceramic slurry and increase fluidity: Adding sodium metasilicate pentahydrate to ceramic slurry can increase the negative surface charge of inorganic clay particles, using the charge repulsion effect to reduce the viscosity of ceramic slurry and increase fluidity
This helps improve the efficiency and product quality of ceramic injection molding processes.

2. Improve the quality and efficiency of ceramic products: Due to the reduction of viscosity and increase of fluidity of ceramic slurry, the use of sodium metasilicate pentahydrate can improve the efficiency and product quality of ceramic injection molding process
。

3. As a grinding aid: Sodium metasilicate pentahydrate can increase the surface charge density of colloidal particles in the mud, increase the thickness and potential of the electric double layer, and increase the repulsive force between particles, thereby improving the fluidity of the mud
。

4. Shorten the time of forming: Sodium metasilicate pentahydrate can quickly undergo flocculation and hardening reactions, shortening the time of forming. It is suitable for ordinary grouting and pressure grouting, and has the characteristics of convenient use, low price, and good dilution performance
。

5. Use with other diluents: Sodium metasilicate pentahydrate can be mixed with other common diluents such as soda ash, phosphate, and sodium humate to form a compound diluent gel-breaking agent, which has better gel-breaking performance than a single gel-breaking agent
。

In summary, sodium metasilicate pentahydrate is mainly used as a grinding aid and flowability modifier in the ceramic industry, which helps to improve the efficiency and product quality of the ceramic production process.