CAS 6362-79-4: 5-Sodiosulfoisophthalic acid

Sodium 5-sulphoisophthalate

It can be used as the third monomer in the Polyester procession of esterification, which can improve the ability of product's dying. And it can be used as the catalyst in medicine, agricultural chemical, polyester. Used as a monomer for waterborne polyesters and nylon fibers, in adhesion aid for magnetic tapes, and amine free polyurethane dispersions. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Sodium 5-sulphoisophthalate is a chemical compound that is the monosodium salt of sulfonated 5-sulphoisophthalic acid. It is an important raw material in the production of polycarboxylic acids, which are used as intermediates in the production of nylon and polyester. The reaction vessel for the production of sodium 5-sulfoisophthalate is usually a stainless steel pressure reactor. Sodium carbonate and sulfur trioxide react at high temperatures to produce sodium 5-sulfoisophthalate and hydrogen sulfide. The product can be purified by fractional distillation, or it can be reacted with ammonia to form ammonium sulfite, which can then be used as a fertilizer. Sodium 5-sulfoisophthalate has been shown to have fluorescence properties and can serve as a probe for hydrogen bonding between molecules.