CAUSTIC SODA

In textile industry, caustic soda is used to process cotton and in the dyeing process of synthetic fibers such as nylon and polyester.

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Detailed Description for CAUSTIC SODA

Caustic soda is an essential raw material and process chemical in many industrial operations. ASC delivers Caustic Soda in 48% solution (Liquid Caustic Soda) and in solid form (Flake Caustic Soda, 98%).Pulp and paper is among the largest application for caustic soda worldwide, where it is used as a raw material in the pulping and bleaching process, in de-inking of waste paper, and in water treatment.

In textile industry, caustic soda is used to process cotton and in the dyeing process of synthetic fibers such as nylon and polyester.

Sodium hydroxide provides fuctions of neutralisation of acids, hydrolysis, condensation. saponification and replacement of other groups in organic compounds of hydroxyl ions. The major use of sodium hydroxide is as a chemical and in the manufacture of other chemicals. It is used in textile industry. Sodium hydroxide is used mainly for two processes in textile manufacture. Mercerizing of fibre with sodium and hydroxide solution enables greater tensional strength and consistent lustre. It also removes waxes and oils from fibre to make the fibre more receptive to bleaching and dying. Sodium hydroxide is also used in the production of viscose rayon. Cellulose is extracted from pulp using sodium hydroxide and subsequently treated with high purity sodium hydroxide  to produce soda cellulose. Further chemical treatment results in a rayon fibre. This is a declining market due to the competition from synthetic (ie petrochemical) fibres. It is used in making paper and pulp.Sodium hydroxide aids separation of cellulose fibres from lignin; this breaks down wood into pulp. Sodium hydroxide also helps bleach paper to required whiteness and brightness. In alumina production industry, a strong alkali solution separates pure alumina from bauxite ore. Alumina is then recovered through precipitation and finally, calcination. Sodium hydroxide is also widely used in in making soaps and detergents, Sodium hydroxide was originally used for soap manufacture, but now has a wider variety of functions. As well as an extractant and refining agent for certain oils, sodium hydroxide is used to produce active agents, or builders in modern synthetic detergents. Sodium Hydroxide is used for sodium hypochlorite which is used as a household bleach and disinfectant and for sodium phenolate used in antiseptics and for the manufacture of Aspirin.


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