Sodium Sulphate Anhydrous 99%Min. (Na2SO4)

Uses of Sodium Sulphate 

Sodium sulfate is a highly versatile compound that finds extensive usage in diverse industries including detergents, textiles, pulp and paper, leather and glass manufacturing. As an essential chemical substance, its import trends in certain countries  reflect the country's economic growth and industrial development.

Sodium sulphate in textile industry: The significance of sodium sulphate in textile dyeing processes cannot be overstated. Its properties and functions play a crucial role in textile dyeing.

Functions of sodium sulphate in textile dyeing process

Sodium sulphate has several important properties and functions in textile dyeing processes.

Firstly, it enhances the affinity between dyes and fabric fibers, ensuring consistent color penetration throughout the fabric surface.

Secondly, it helps control pH levels during dyeing to maintain optimal conditions for color development and prevent damage to fabrics.

Thirdly, it acts as a stabilizer by preventing hydrolysis reactions that can lead to loss of color vibrancy.

Fourthly, it aids in the exhaustion of dyes onto the fabric by maintaining ionic balance within the dyebath solution. This increases dye utilization and reduces waste.

Lastly, sodium sulphate acts as a fixing agent to ensure that dyes remain permanently attached to textile fibers even after multiple washes or exposure to external elements like light or chemicals. This contributes to long-lasting colorfastness and durability in dyed fabrics.

Sodium sulfate is commonly added in reactive dyebath in order to increase substantivity of the reactive dye to cellulose fiber by reducing repulsion between anionic dye and fiber. While sodium sulfate is mostly used in solid form, it is inconvenient to dissolve a large amount of powder sodium sulfate. Furthermore, if there is undissolved salt in dyebath it might cause unlevel dyeing. In this study, sodium sulfate in liquid or solid form was used in dyeing of cellulose fabric with reactive dyes of three primary color and the effect of type or amount of sodium sulfate on dyeing and fastness properties was investigated. When the amount of sodium sulfate rose to 30-50 g/l, K/S value of the dyed fabric markedly increased; further rise in sodium sulfate concentration resulted in slow increase in K/S value. For light color, optimum amount was about 30 g/l in solid form and 50-100 g/l in liquid form while, for medium to deep color, it was 50 g/l and 100-150 g/l in solid and liquid form, respectively. When using each optimum amount of salt in solid or liquid form for medium color, shape of dyeing curve as well as exhaustion was similar to each other. On the whole, similar color fastness results were obtained regardless of type or amount of sodium sulfate.

Sodium Sulphate in detergent industry: Sodium sulfate, which serves as a filler in detergent powder, allows for the necessary adjustment of the concentration of active ingredients in the detergent. Its addition ensures that the detergent powder can flow smoothly and prevent clumping. Without sodium sulfate, the detergent would easily agglomerate into a solid mass.

Sodium Sulphate in glass industry: Sodium sulfate serves as a fining agent, aiding in the elimination of tiny air bubbles from liquid glass. Additionally, it acts as a flux for the glass, preventing the formation of scum during the refining process.