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TRIMELLITIC ANHYDRIDE

 
Abbreviation TMA
CAS No 552-30-7
Molecular Weight 192.12
Molecular Formula C9H4O5
 
Specification
Unit
Typical Value
Appearance -
White flakes
Purity Wt %
99.50 Min
Total Anhydride Wt %
98.5 +/- 1.5
Melting Point °C
165 – 168
Colour (Pt-Co) -
150 Max
 
Chemical and Physical Properties   

Odor Musty odor.
pH 2.0
Vapour Pressure Less than 1.1X10 -7 mm Hg at 25°C
Vapour Density 6.6
Boiling Point 730°F(390°C)
Melting Point 330°F(165°C)
Solubility in Water Moderate after hydrolysis to acid.
Specific Gravity 1.54
 
Application

Suitable for alkyd coatings, plasticisers, high temperature polymers, low-cost epoxy curing, surfactants and specialty chemicals. It is extensively used in the automotive, building and construction, consumer goods, coatings and packaging sectors.
 
Caution for Storage

Store dry on pallets, not exposed to heating or UV light, at adequately ventilated area.
 
Packaging Paper bags with plastic liner, 25kg net. Available in 500kg, 750kg or 1000kg bulk bags.
 

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