Water glass

name:Water glass

China National Standard:GB/T 4209-2008

The reaction chemical formula is:Na2CO3＋SiO2—Na2SiO3＋CO2↑

Chinese name Sodium silicate

English nameSodium silicate

别 称 Sodium hydroxide, water glass

Chemical formulaNa2SiO3·9H2O

Molecular weight284.2

熔 点1089°C

Relative density2.614

Refractive index1.520

concept:

Commonly known as Sodium Hydrochloride, it is a water-soluble silicate, and its aqueous solution is commonly known as water glass,It is a mineral binder.Its chemical formula isR2O·n SiO2, WhereR2OIs an alkali metal oxide,nIt is the ratio of the number of moles of silica to the alkali metal oxide and is called the number of moles of water glass.The commonly used water glass in construction is sodium silicate (Na2O·n SiO2) In aqueous solution.

Chemical characteristics:

This product is alkaline and can survive in alkaline and neutral environments, and reacts with acid to precipitate sodium silicate colloidal precipitate

use:

The use of water glass is very extensive, almost in all sectors of the national economy:

1.Used in the petroleum industry to manufacture aluminum silicate catalysts for the catalytic cracking of petroleum;

2.The chemical system is used to make silica gel, white carbon black, zeolite molecular sieve, sodium metasilicate, silica sol, layered silica and instant powdered foam

Alkali, potassium sodium silicate and other silicate products are the basic raw materials of silicon compounds;

3.In the light industry, it is an indispensable raw material in detergents such as washing powder and soap, as well as a water softener and sedimentation aid;

4.Used in dyeing, bleaching and sizing in the textile industry;

5.Widely used in casting, precision casting manufacturing and metal preservatives in the machinery industry;

6.In the construction industry, it is used to manufacture quick-drying cement, acid-resistant cement, waterproof oil, soil curing agent, and refractory materials; subway grouting, waterproofing, leak-stopping, and mine beneficiation;

7.In agriculture, silicon fertilizer can be made;

8.Ceramic raw materials, food preservation, mine dressing, and high modulus water glass are often used as binders.

Matters needing attention in transportation:

Store in a general warehouse, or store in a tank, the container must be sealed, and can not be stored and transported together with acid products.