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Sodium Sulphate Anhydrous Overview

Sodium anhydrous sulfate, also known as Thenardite, has a chemical formula which is Na2SO4. It has a white crystalline solid appearance and is very stable in chemical terms. The anhydrous sodium sulfate density is 2.664 g/cm3. The boiling point of sodium sulfate anhydrous is 1,429 °C and the melting point is  884 °C. At normal temperatures, it is unresponsive to most oxidation reactions or organic solvents. In addition, it can be transformed by carbo-thermal reduction to sodium sulfide at high temperatures. 

Anhydrous sodium sulfate, referred to as the rare mineral thenardite, is used in organic synthesis as a drying agent. The mineral thenardite occurs in arid environments as anhydrous sodium sulfate. In humid climates, it slowly transforms into a mirabilite. Sodium sulfate is also known as glauberite, a mineral of calcium sodium sulfate. Both are less common than mirabilite minerals.

The anhydrous, sodium salt type of sulfuric acid is Sodium Sulfate Anhydrous. Anhydrous sodium sulfate detaches in the water to deliver sodium atoms and sulfate atoms. Sodium Ions is the extracellular fluid’s primary positively charged ion and plays a significant role in the treatment of water and electrolyte disturbances. By means of the decahydrate form, bulk sodium sulfate is typically filtered, while the anhydrous form appears to attract iron compounds and organic compounds. By gentle warming, the anhydrous form is easily formed from the hydrated form.

Anhydrous sodium sulfate is commonly utilized in the chemical lab as an inactive drying agent to remove the water layer from the solvent. It is more effective, but slower-acting, than magnesium sulfate, a similar agent. It is only useful below around 30 ° C, but because it is chemically inert, it can be used with an array of substances.

Sodium Sulphate Technical Overview

AppearanceOff white powder
Assay (Weight %)Min 99.00
Loss On Drying (Weight %)Max 0.50
pH (10% Solution)7.0 – 9.5

Usually, powdered detergents for washing clothes contain sodium sulfate simply to bulk up the substance, making the detergent producers the compound’s largest consumers. It doesn’t do anything for cleaning, but it simply passes through the system as a very inexpensive, pH neutral material that quickly dissolves in warm water, making the product less expensive to manufacture per unit weight. This often acts as a Desiccant. They can attach several water molecules, forming hydrates.

Applications of Sodium Sulphate Anhydrous

Textile Industry

As a retarding agent, sodium sulfate is used where it lowers the negative fiber charge. It makes it possible for dyes to enter the textiles uniformly and efficiently by doing so. In particular, the stainless steel vessels used in dyeing are not corroded compared to those used in traditional salt; sodium chloride.

Detergent Industry

The primary need for sodium sulfate in powder products, such as detergents, is as a filler. Fluid detergent that does not contain sodium sulfate has just become more famous, reducing the use of sodium sulfate.

Paper Industry

Sodium sulfate is used in the Kraft process for paper pulp in the paper industry. The wood chips are heated and filled with sodium sulfate. This leads to the reduction of the sodium sulfate into sodium sulfide that splits the wood cellulose bond, so the wood chips become soft and easy to shape into wood pulp.

Glass Industry

Sodium sulfate is to avoid the creation of air bubbles in molten glass in the glass industry. Sodium sulfate also acts as an organic compound dryer. It extracts water from the organic compound, but it is more effective to extract it slowly than another drying agent, such as magnesium sulfate.

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