What is Sodium Silicate CAS 1344-09-8?

Sodium Silicate CAS 1344-09-8, commonly called water glass or soluble glass, is an alkaline inorganic silicate supplied as a viscous liquid or solid glass lumps. Its general composition is Na2O(SiO2)n, and the silica-to-soda ratio can be adjusted for different industrial uses.

What does the modulus or molar ratio of Sodium Silicate mean?

The modulus is the molar ratio of silicon dioxide to sodium oxide in the product. It controls the balance between alkalinity, viscosity, binding strength and gelling behavior, so choosing the correct modulus is important for detergents, adhesives, foundry work and other applications.

What is the difference between low-modulus and high-modulus Sodium Silicate?

Low-modulus grades, roughly 2.0-2.5, are more alkaline and usually have higher solids and density; they are often selected for detergents and textile processing. High-modulus grades, roughly 3.0-3.5, are less alkaline and are commonly used in adhesives, silica gel production, fireproofing and other binder applications.

Why is Sodium Silicate used as an adhesive binder and soil stabilizer?

Sodium silicate reacts with multivalent ions or setting agents to form a hardened silica network that binds particles together. This makes it useful for cardboard and paper adhesives, foundry molds, cement hardening, waterproofing and soil stabilization where a strong, chemically resistant bond is needed.

How does Sodium Silicate work in detergents and ceramic processing?

In detergents it supplies alkalinity and buffering capacity while helping to emulsify soils and prevent redeposition. In ceramic slurries it acts as a deflocculant, reducing viscosity and improving dispersion so that solid particles remain evenly suspended with less water.

How should solid and liquid Sodium Silicate be stored?

Keep liquid sodium silicate in closed steel drums, IBC tanks or flexibags and avoid freezing or prolonged exposure to air, which can form skins or deposits. Solid lumps should be stored dry and protected from moisture; they are normally dissolved under pressure in an autoclave to produce a liquid of the required density.

Sodium Silicate CAS 1344-09-8

Sodium Silicate (water glass), CAS 1344-09-8, is an alkaline inorganic silicate supplied as a viscous liquid or solid glass lumps for detergents, adhesives, foundry, construction, textiles and ceramic processing. Confirm the required modulus and grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 1344-09-8
Synonyms: Water glass, Soluble glass, Sodium silicate glass, Silicic acid sodium salt
Einecs: 215-687-4
Molecular Formula: Na₂O(SiO₂)ₙ
Grade: Industrial Grade
Package: Liquid: 300kg Steel Drum / 1250kg IBC Tank / Flexibag • Solid: 1000kg / 1250kg Jumbo Bag (Woven bag)

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Product Description

Sodium Silicate, CAS 1344-09-8, commonly called water glass or soluble glass, is an alkaline inorganic silicate.

Synonyms: Water glass; Soluble glass; Sodium silicate glass; Silicic acid sodium salt.

CAS: 1344-09-8.

Its general composition is Na₂O(SiO₂)ₙ, and the silica-to-soda ratio can be adjusted for different industrial uses.

Low-modulus grades, about 2.0–2.5, are more alkaline and usually have higher solids and density.

High-modulus grades, about 3.0–3.5, are less alkaline and are commonly used in adhesives, silica gel production and fireproofing.

It is supplied as solid glass lumps that can be dissolved in autoclaves, or as a ready-to-use viscous liquid adjusted to a required Baumé density.

It is used in detergents and soaps as a builder and corrosion inhibitor, and in textile peroxide bleaching as a stabilizer.

It is used in paper de-inking, as a bleaching stabilizer and in ceramic slurries as a deflocculant.

It is used as a binder for sand molds in foundry and casting, including the CO₂ process.

It is used in construction for soil stabilization, concrete hardening and dustproofing.

It is used in paper tube, cardboard drum and carton-sealing adhesives.

It reacts with multivalent ions or setting agents to form a hardened silica network that binds particles together.

Confirm appearance, modulus, sodium oxide, silicon dioxide, solids content, Baumé density, iron content, water insolubles, pH and viscosity.

Store liquid sodium silicate above 0 °C in closed steel, plastic or stainless steel containers; avoid aluminum, galvanized iron and zinc.

Keep containers tightly closed to prevent reaction with atmospheric CO₂, which can form surface skins or deposits.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required modulus, grade, form, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Sodium Silicate CAS 1344-09-8?

A: Sodium Silicate CAS 1344-09-8, commonly called water glass or soluble glass, is an alkaline inorganic silicate supplied as a viscous liquid or solid glass lumps. Its general composition is Na2O(SiO2)n, and the silica-to-soda ratio can be adjusted for different industrial uses.
Q:
What does the modulus or molar ratio of Sodium Silicate mean?

A: The modulus is the molar ratio of silicon dioxide to sodium oxide in the product. It controls the balance between alkalinity, viscosity, binding strength and gelling behavior, so choosing the correct modulus is important for detergents, adhesives, foundry work and other applications.
Q:
What is the difference between low-modulus and high-modulus Sodium Silicate?

A: Low-modulus grades, roughly 2.0-2.5, are more alkaline and usually have higher solids and density; they are often selected for detergents and textile processing. High-modulus grades, roughly 3.0-3.5, are less alkaline and are commonly used in adhesives, silica gel production, fireproofing and other binder applications.
Q:
Why is Sodium Silicate used as an adhesive binder and soil stabilizer?

A: Sodium silicate reacts with multivalent ions or setting agents to form a hardened silica network that binds particles together. This makes it useful for cardboard and paper adhesives, foundry molds, cement hardening, waterproofing and soil stabilization where a strong, chemically resistant bond is needed.
Q:
How does Sodium Silicate work in detergents and ceramic processing?

A: In detergents it supplies alkalinity and buffering capacity while helping to emulsify soils and prevent redeposition. In ceramic slurries it acts as a deflocculant, reducing viscosity and improving dispersion so that solid particles remain evenly suspended with less water.
Q:
How should solid and liquid Sodium Silicate be stored?

A: Keep liquid sodium silicate in closed steel drums, IBC tanks or flexibags and avoid freezing or prolonged exposure to air, which can form skins or deposits. Solid lumps should be stored dry and protected from moisture; they are normally dissolved under pressure in an autoclave to produce a liquid of the required density.

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