Sodium Silicate 40% - CAS 1344-09-8

Sodium Silicate is a solution of the sodium salt of silicic acid. It is characterized by its concentration in the solution, its viscosity and its weight ratio (or molar ratio), well defined between silica (SiO₂) and sodium oxide (Na₂O) contained in the solution.

The weight ratio (SiO₂:Na₂O) will dictate several properties of the product. By increasing the weight ratio we observe:

• A higher drying speed
• Lower solubility
• The formation of harder / more resistant films
• A higher adhesion strength
• An increase in viscosity

Soda silicate forms naturally by the reaction of silica with sodium carbonate in a molten state.

This chemical product is available as a liquid solution, packaged in 27 kg canisters, 274 kg drums and 1,360 kg IBCs.

MAIN FUNCTIONS

Soda silicate has a very wide range of applications in the chemical industry, processing and construction.

INDUSTRIAL USE

• Detergent industry: due to its good solubility in water and its alkaline and dispersing properties, it is used in the production of household chemical products, for example detergents, dishwashing powders and liquids.
• Wood industry: used for the preparation and impregnation of wood and fabrics to obtain a fire-resistant surface.
• Paper industry: helps to bleach cellulosic products and particleboard, and is used as a binder for various types of adhesive compounds, i.e. Glues and mastics.
• Cardboard industry: used to bond the flutes (different cardboard sheets) together
• Construction: used as a supplement to cement or mortar, as a surface treatment and concrete hardener. Formulations based on sodium silicate are called "ecological building materials". This chemical regulates the moisture absorption process, strengthens concrete, increases the adhesion and resistance of coatings to weather conditions, i.e. Low temperatures and humidity (water repellent). Sodium silicate is found in stucco, plaster, concrete...
• Steel industry: used for the production of high-quality foundry molds. Sodium silicate is also used as a corrosion inhibitor and for the production of anti-dust agents.
• Food industry: it is the additive E550, used as an anti-caking agent.

It is a highly eco-friendly product which, after drying, leaves a glassy layer that has no negative effect on the human body, plants or animals.

PROFESSIONAL USE

In the water treatment process, it can be used to soften water and remove compounds that cause limescale deposits.

It can also be used in aquaculture, as a growth substrate for certain algae.

In pottery, it is used to fluidize and deflocculate casting slips.

USAGE INSTRUCTIONS

For casting slips (pottery), dissolve sodium silicate and soda ash in water. Add the powdered clay. Mix.

To waterproof wood, cement, plaster...: apply three coats of sodium silicate diluted with 33% water.

Other names

• Sodium metasilicate
• Sodium Silicate
• Sodium soluble glass
• Sodium silicate alloy
• Silicic acid
• Sodium salt
• Liquid glass (old name)

English names:

• Sodium silicate
• Soda water glass
• Silicic acid
• Sodium salt