5-Hydroxyisophthalic acid, CAS No. 618-83-7

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618-83-7

Catalog No. EBD41555

CAS 618-83-7

Name 5-Hydroxyisophthalic acid

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Basic Information

Synonyms: 5-HYDROXYBENZENE-1,3-DICARBOXYLICACID 5-HYDROXYISOPTHALICACID 5-HIPA 5-HYDROXY-1,3-BENZENEDICARBOXYLICACID HYDROXYISOPHTHALIC-5ACID HYDROXYISOPHTHALICACID,5- 5-hydroxybenzene-1,3-dicarboxylate OHIPA 5-Hydroxyisophthalicacid

Molecular Formula: C8H6O5

Molecular Weight: 182.13

MDL Number: MFCD00002515

Categories: Materials Chemistry > Polymers and Macromolecular Materials > Polyester and Bio-based Polymer Precursors Synthetic Chemistry > Organic Building Blocks > Carboxylic Acids and Esters

Product Description:

5-Hydroxyisophthalic acid is an aromatic dicarboxylic acid bearing a hydroxyl group at the 5-position. It is a white to off-white crystalline powder with the molecular formula C8H6O5. This compound is a versatile bifunctional monomer, featuring both carboxylic acid and phenolic hydroxyl groups. Its primary industrial application is as a key monomer in the synthesis of high-performance polymers, particularly polyesters and polyamides. The presence of the hydroxyl group on the aromatic ring allows for the introduction of cross-linking sites or modification points, enabling the production of polymers with enhanced thermal stability, mechanical properties, and chemical resistance. It is used in the manufacture of specialty resins, liquid crystal polymers (LCPs), and other advanced engineering plastics. As a readily available building block, it also serves as a useful intermediate in organic synthesis for constructing more complex molecular architectures, particularly in materials science research.

Physical Properties

Melting Point: 298-302 °C(lit.)

Boiling Point: 516.9 °C at 760 mmHg

Flash Point: 280.5 °C

Density: 1.612 g/cm3

Analytical Data

Appearance: white to slightly yellow powder