Trimesic acid, also known as benzene-1,3,5-tricarboxylic acid, is a benzene derivative with three carboxylic acid groups.
Trimesic acid is a planar molecule (and is one of only four benzenecarboxylic acids with that property).
Trimesic acid can be combined with para-hydroxypyridine to make a water-based gel, stable up to 95 °C.
Trimesic acid crystallizes from water in a hydrogen-bonded hydrated network with wide unidimensional empty channels.

Appearance and properties: white crystalline powder

Density: 1.654g/cm3

Boiling point: 561.4oC at 760mmHg

Melting point: >300 °C(lit.)

Flash point: 328°C

Stability: Stable, but may be light sensitive.

Storage conditions: Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry,  well-ventilated area away from incompatible substances.

Usage:As a pharmaceutical intermediate, it is also used in the preparation of fungicides, mildewproof agents, plasticizers and crosslinkers