Disodium terephthalate(CAS: 10028-70-3)

Disodium terephthalate (CAS: 10028-70-3) is a crystalline white powder with a molecular weight of approximately 234.12 g/mol. It is highly soluble in water and has a low solubility in ethanol. Chemically, it is stable under normal conditions but can react with strong bases. It is often used in the production of polyester and as a food additive.

Disodium terephthalate is typically synthesized by the esterification of terephthalic acid with sodium hydroxide. The process involves the reaction of terephthalic acid with sodium hydroxide to produce sodium terephthalate, which is then neutralized with sulfuric acid to form the disodium salt. Common catalysts include sulfuric acid and other strong acids, with moderate selectivity and high yield.

Disodium terephthalate (CAS: 10028-70-3) is widely used in the polyester industry, particularly in the production of polyethylene terephthalate (PET) for packaging materials, fibers, and films. It is also used in the pharmaceutical industry as a food additive due to its low toxicity and stability.

When handling Disodium terephthalate (CAS: 10028-70-3), proper personal protective equipment (PPE) such as gloves, goggles, and a lab coat should be worn. It should be stored in a cool, dry place away from strong acids and bases. In case of a spill, it should be cleaned up using appropriate methods, and the area should be well-ventilated. Refer to the Safety Data Sheet (SDS) for detailed instructions.