Isophthalic acid

  • M- phthalic acid
  • 1,3 - benzenedicarboxylic acid

Colorless and almost odorless crystalline solid

Fixed

1.54 g · cm -3

348 ° C

610 Pa ( 250 ° C)

  • PKS1 = 3.62
  • PKa2 = 4.60

Sparingly soluble in water: 0.12 g · l-1 (25 ° C)

2 mg · m -3 ( inhalable aerosol fraction)

Template: Infobox chemical / molecular formula search available

Isophthalic acid ( also meta -phthalic acid ) is a chemical and belongs to the group of aromatic dicarboxylic acids ( benzene ).

Production

Isophthalic acid is produced by oxidation of meta-xylene with atmospheric oxygen.

Use

Isophthalic acid is used as the starting material of aramids, polyesters, synthetic resins for high temperature resistant electrical insulation and oil-free alkyd resins.

CAS registry number PubChem Sublimation (phase transition) Vapor pressure Integrated Authority File
419530
de