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Sodium Sulphate White Powder



Sodium Sulphate White Powder   Next >>
Product Description

Sodium sulfate is the sodium salt of sulfuric acid. When anhydrous, it is a white crystalline solid of formula Na2SO4 known as the mineral thenardite; the decahydrate Na2SO4·10H2O is found naturally as the mineral mirabilite, and in processed form has been known as Glauber's salt.

Formula: Na2SO4

Molar mass: 142.04 g/mol

Melting point: 884 °C

Boiling point: 1,429°C

Density: 2.66 g/cm³

Soluble in: Water

Application:

Commodity industries:

The largest use is as filler in powdered home laundry detergents, consuming approx. 50% of world production.

Another formerly major use for sodium sulfate, notably in the US and Canada is in the Kraft process for the manufacture of wood pulp.

Sodium sulfate is used as a fining agent, to help remove small air bubbles from molten glass.

Sodium sulfate is important in the manufacture of textiles. Sodium sulfate helps in "leveling", reducing negative charges on fibers so that dyes can penetrate evenly.

Thermal storage:

The high heat storage capacity in the phase change from solid to liquid, and the advantageous phase change temperature of 32°C (90 °F) makes this material especially appropriate for storing low grade solar heat for later release in space heating applications.

For cooling applications, a mixture with common sodium chloride salt (NaCl) lowers the melting point to 18°C (64°F). The heat of fusion of NaCl.Na2SO4·10H2O, is actually increased slightly to 286 kJ/kg.

Small-scale applications:

In the laboratory, anhydrous sodium sulfate is widely used as an inert drying agent, for removing traces of water from organic solutions.

Glauber's salt, the decahydrate, was historically used as a laxative. It is effective for the removal of certain drugs such as acetaminophen from the body, for example, after an overdose.

In 1953, sodium sulfate was proposed for heat storage in passive solar heating systems.

This Other uses for sodium sulfate include de-frosting windows, in carpet fresheners, starch manufacture, and as an additive to cattle feed.

 

Specification:

Technical Name

Sodium Sulphate

Formula

Na2SO4

Molecular Weight

142.04

CAS No.

7757-82-6

Appearance

White Powder

Assay

Min 98%

Sodium

Min 32%

Sulphate

1.5%

Chloride

Max 0.1%

Moisture

Max 0.4%

Water Insoluble

Max 0.015%

pH of 5% solu

6-8

Heavy Metals

Nil

Product Code : SSWP      Brand Name :SLCSS

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