Sodium metasilicate pentahydrate;
Na2SiO3.5H2O, CAS 10213-79-3;
Sodium metasilicate anhydrous
Na2SiO3, CAS no.6834-92-0;
Detergent, cleaning agent

Chemical Identification

Common Name:	Sodium Metasilicate
Synonyms:	Silicic Acid Disodium Salt;
CAS No.:	10213-79-3 (Pentahydrate); 6834-92-0 (Anhydrous)
EINECS No.:	229-912-9
Appearance:	White powder or granule
Density:	2.61
Melting Point:	1088°C
Molecular Formula:	Na2SiO3.5H2O
Molecular Weight:	212.14
Molecular Structure:

Product Information

Specifications:

 Specifications for Sodium Metasilicate Pentahydrate

Product name: Sodium Metasilicate Pentahydrate Manufacturer: Ningbo Titan Unichem Co., Ltd.
TEST ITEMS	SPECIFICATIONS
Sodium oxide (Na2O)	28.0-30.0%
Silica (SiO2)	27.0-29.0%
Water insoluble	0.2% max
Fe	200ppm max
Whiteness	80% min
Bulk Density	0.80-0.97 g/cm3
PH (1.0% Solution)	12-13
Melting Point	72.2°C
Particular size (16-30 mesh)	90% min
Appearance	White granule

Specifications for Sodium Metasilicate Anhydrous

Product name: Sodium Metasilicate Anhydrous Manufacturer: Ningbo Titan Unichem Co., Ltd.
TEST ITEMS	SPECIFICATIONS
Na2O	50.5±1.0%
SiO2	46.0±1.5%
Fe	200ppm max
Water Insoluble	0.2% max
Bulk density	1.05-1.35 g/cm3
Particle Size (18-60mesh)	93% min
Whiteness	85% min
PH (1.0% Solution)	12-13
Appearance	White granule

Pictures:

 

Appearance of Sodium metasilicate: granule and powder.

 

Package of Sodium metasilicate from TITAN UNICHEM.

 

Loading of Sodium metasilicate from TITAN UNICHEM.

 

Loading of Sodium metasilicate from TITAN UNICHEM.

Packaging:

• Packed in 25Kg PP-PE woven bag;

• Or package as per customer's request.

Delivery Lead Time:

• Prompt shipment within 2 weeks.

Storage & Handling:

• Store in a cool, dry and well-ventilated place.

• Protect from rain-drenched and moisture.

• Protect from sun-scorched and rain-drenched. 

• Send out the product in the sequence of stored-up date.

• Handle with care and avoid breaking the bags by edged tools. 

Safety Information:

Hazard Class:	8
RIDADR:	UN 3253
Packing Group:	III
HS Code	2839110000
Safety Statements:	S26-S36/37/39-S45
Risk Statements:	R34;R37
Hazard Codes:	C: Corrosive

Application

Descriptions:

• Sodium Metasilicate Pentahydrate is the most typical form of sodium metasilicate in the varieties, the formula is Na2SiO3.5H2O.

• Pentahydrate sodium metasilicate is white powder or crystalline granules.

• Pentahydrate sodium metasilicate is non-toxic, tasteless and environment-safe.

• Pentahydrate sodium is easy soluble in water, alcohol or acid, producing an alkaline solution.

• Pentahydrate sodium metasilicate has the general characteristics of sodium silicate and sodium metasilicate, calcium and magnesium ions are bound ability, especially for the combination of magnesium ions capacity.

• Anhydrous sodium metasilicate with formula Na2SiO3, dissolves fast, won't appear vitrification phenomenon.

• Anhydrous sodium metasilicate in some areas of application performance is better than that of hydrated silica. 

• Anhydrous sodium metasilicate has the capabilities of removing scale, emulsifying, dispersing, wetting, penetrating, and also has the capability of buffering PH value.

Uses:

• Sodium metasilicate has the strong capability of cleaning, widely used for the manufacture of a variety of detergents in detergent industry; it is the best substitute for STPP, reducing environmental pollution.

• Sodium metasilicate provides anti-corrosion protection to metals (zinc, aluminum, etc.), which is used as metal cleaner and metal surface treatment agents.

• In textile industry, Sodium metasilicate is mainly used as printing and dyeing auxiliaries, fabric pre-treatment agent and as detergents in cooking and dyeing cotton yarn.

• In paper & printing industry, Sodium metasilicate can be used as adhesives, old paper deinking agent, paper surface treatment agent and printing detergent.

• In ceramic industry, Sodium metasilicate is used for sludge thinners, which is especially suitable for additives used in slip-casting forming and ceramic forming.

• In metallurgical industry, Sodium metasilicate is used as inhibitors and dispersing agent of silicon-containing minerals, smelting furnace dispersants, fast-drying agents, and foundry and separating agents.

• In construction field, Sodium metasilicate is used for concrete dispersion agent and hardening accelerator. It is also used as coagulation accelerator.