API Sodium sulfate anhydrous

Name

Sodium sulfate anhydrous

CAS number

7757-82-6

Description

Sodium sulfate anhydrous is an important inorganic compound. It is a white, crystalline substance that is widely used in various industries.

2. Physical Characteristics

Appearance: Sodium sulfate anhydrous is a white powder or granular solid. It has a crystalline structure that gives it a characteristic look. The crystals are usually small and can be fine - grained.

Solubility: It is soluble in water. When added to water, it dissolves to form a clear solution. The solubility of sodium sulfate anhydrous varies with temperature. As the temperature rises, more of it can dissolve in water. However, it is insoluble in ethanol. This difference in solubility helps in its separation from other substances in certain chemical processes.

Density: It has a relatively high density, which affects its handling and storage. The density allows it to settle in solutions and also impacts its packaging and transportation requirements.

3. Production Ways

From Sodium Chloride and Sulfuric Acid: One method to produce sodium sulfate anhydrous involves the reaction of sodium chloride and sulfuric acid. In this process, when sodium chloride reacts with sulfuric acid under specific conditions such as high temperature, sodium sulfate anhydrous is formed. Along with the formation of sodium sulfate, hydrochloric acid gas is also produced as a by - product.

From Mirabilite: Another production method is through the dehydration of mirabilite. Mirabilite is a hydrated form of sodium sulfate. By heating mirabilite, the water molecules associated with it are removed, and anhydrous sodium sulfate is obtained. This process requires careful control of temperature and other conditions to ensure complete dehydration.

4. Applications

Detergent Field: In the detergent industry, sodium sulfate anhydrous is used as a filler. It helps to give the detergent powder the right consistency and texture. It also plays a role in the performance of detergents. For example, it can help to reduce the hardness of water during the washing process. When hard water is used in washing, the presence of sodium sulfate anhydrous can interact with the calcium and magnesium ions in the water, reducing their negative impact on the cleaning performance of the detergent.

Glass Manufacturing: Sodium sulfate anhydrous is a crucial ingredient in the production of glass. It helps to modify the properties of the glass - making raw materials. By adding sodium sulfate anhydrous to the glass - making mixture, the melting point of the silica, which is a main component of glass, can be lowered. This enables the glass - making process to be carried out more efficiently at lower temperatures, which is beneficial for energy conservation and cost - reduction in the glass manufacturing process.

Textile Processing: In the textile industry, it is used in dyeing and printing operations. During dyeing, it can help to ensure that the dye is evenly distributed on the fabric. It acts as an electrolyte, which is important for the proper fixation of dyes onto the textile fibres. This helps to produce high - quality, evenly - dyed textiles with good colour fastness.

Molecular Formula

Na₂SO₄

Appearance

Solid powder

Quality Standard

USP, EP, BP, CP

Shipping Condition

Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition

Dry, dark and at 0 – 4 ℃ for short term (days to weeks) or -20 ℃ for long term (months to years).

Shelf Life

>2 years if stored properly

Sample package

Aluminium foil bag

Commercial package

Aluminium Tin, Fiber drum

Origin

China