PYROMELLITIC ACID

PRODUCT IDENTIFICATION
CAS NO.

89-05-4

PYROMELLITIC ACID

EINECS NO. 201-879-5
FORMULA C6H2(COOH)4
MOL WT. 254.15
H.S. CODE

 

TOXICITY  
SMILES

 

SYNONYMS Pyromelletic Acid; PMA;
1,2,4,5-Benzenetetracarboxylic Acid; 1,2,4,5-Tetracarboxybenzene; Benzol-1,2,4,5-tetracarbonsäure; (German); ácido benceno-1,2,4,5-tetracarboxílico (Spanish); Acide benzene-1,2,4,5-tétracarboxylique (French);

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

White Solid

MELTING POINT

281 - 285 C

BOILING POINT 380 - 400
SPECIFIC GRAVITY

1.68

SOLUBILITY IN WATER 1.5 g/100ml (soluble in alcohol)
AUTOIGNITION  
pH 2.20 (3.9 g/l)
VAPOR DENSITY

 

AUTOIGNITION  
NFPA RATINGS

 

REFRACTIVE INDEX

 

FLASH POINT

 

STABILITY Stable under ordinary conditions.

APPLICATIONS

There are almost infinite esters obtained from thousands of potential starting materials. Esters are formed by removal of water from an acid and an alcohol, e.g., carboxylic acid esters, phosphoric acid esters, and sulfonic acid esters. Carboxylic acid esters are used as in a variety of direct and indirect applications. Lower chain esters are used as flavouring base materials, plasticizers, solvent carriers and coupling agents. Higher chain compounds are used as components in metalworking fluids, surfactants, lubricants, detergents, oiling agents, emulsifiers, wetting agents textile treatments and emollients, They are also used as intermediates for the manufacture of a variety of target compounds. The almost infinite esters provide a wide range of viscosity, specific gravity, vapor pressure, boiling point, and other physical and chemical properties for the proper application selections.

The applications of pyromellitic acid can be found in the industry of

  • Epoxy curing agent
  • Adhesives and coating material
  • Engineering plastic
  • Synthetic fiber
  • Cross-linking agent for alkyd resin
  • Plasticizer
  • Pharmaceutical and other organic compound
SALES SPECIFICATION

APPEARANCE

White Powder

PMA CONTENT

98.5% min

MOISTURE

 1.5% max

MELTING POINT

276 C min

PARTICLE SIZE

 90% min ( 200µm)
TRANSPORTATION
PACKING 25kgs in Bag
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26/37/39