Chemical

Products

Tri Mellitic Anhydride

Cas Number

552-30-7

Other Names

1,2,4-Benzentricarboxylic,

1,2-Anhydride,

4-Carboxyphthalic

The formula

C9H4O5

Introduction

Trimellitic anhydride is a white solid in the form of flakes. It is readily hydrolysed in water to trimellitic acid, which is moderately soluble in water. Trimellitic anhydride is readily soluble in acetone, cyclohexanone, 2-butane, ethyl acetate, and dimethyl formamide (from 49.6 to 15.5% w/w at 25 °C).

Physical and Chemical Properties
Physical state and Appearance White crystalline powder
Melting Point 165 C
Boiling Point 240 C at 20 mm Hg
Specific Gravity 1.54
Solubility Moisture sensitive.
Total Anhydride Content, % ≥ 98
Acid Value, Mg KOH/g ≥ 873°C
Melting Point, ˚C ≥ 164
Fuse Chroma (pt-co) ≤ 120
PA, PPM ≤ 300
Applications

1. Trimellitic anhydride is used in the production of resins for electrode-position and powder coatings, and as a binder for glass fibers, and other aggregates.

2. Trimellitic anhydride is used as an embossing agent for vinyl flooring and as a curing agent for epoxy resins.

3. It is also used as an intermediate for the synthesis of surface coatings chemicals, adhesives, polymers, dyes printing inks, Pharmaceuticals and agrochemicals.