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Synonyms: Benzene-1,3-dicarboxylic acid, meta-Phthalic acid
Isophthalic acid is produced on the billion kilogram per year scale by oxidizing meta-xylene using oxygen.The process employs a cobalt-manganese catalyst. In the laboratory, chromic acid can be used as the oxidant. It also arises by fusing potassium meta-sulphobenzoate, or meta-brombenzoate with potassium formate (terephthalic acid is also formed in the last case).The barium salt (as its hexahydrate) is very soluble (a distinction between phthalic and terephthalic acids). Uvitic acid, 5-methylisophthalic acid, is obtained by oxidizing mesitylene or by condensing pyroracemic acid with baryta water.
I 1656 (OTTO) Isophthalic acid, 99% Cas 121-91-5 - used as an intermediate primarily for unsaturated polyester resins and alkyd and polyester coating resins; other applications include use in aramid fibers, as a component of copolyester resins and in high-temperature polymers.
WGK Germany 2
Certificate Of Analysis
(For eg. B 1615-0108)
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