Maleic Acid (C-Maleic Acid HP)

Maleic Acid

General Product Properties

CAS #: 110-16-7
EC #: 203-742-5
Formula : C4H4O4
Molecular Weight : 116.07 g/mol
Melting point/range: 137 – 140 °C
Physical State: Solid
Appearance: White to off white, crystalline Powder


Cymer High Purity Maleic Acid (C-Maleic Acid HP) is used in the manufacture of phthalic-type alkyd and polyester resins, surface coatings, copolymers, plasticizers, lubricant additives and agricultural chemicals. Maleic Acid is used in adhesives and sealants; as a preservative for oils and fats; organic synthesis; dyeing and finishing wool, cotton and silk; and preparing the maleate salts of antihistamines and similar compounds.


UN/11G/X/ 900 Triple wall corrugated box 700 Kg net, ((35) thirty five 24″ x 48″ separate bags, 20 kgs each). 25 gallon UN Rated Drum, 40 Kg net, ((2) two 24″ x 48″ separate bags, 20 kgs each).

Storage and handling guidelines

Keep container tightly closed in a dry and well-ventilated place, store at ambient Temperature.
Shelf-life: 5 years.

Regulatory Information

Reference: Cymer SDS C-Maleic Acid HP


Test Specification Method
Appearance White to off white, Crystalline Powder Visual
Identity Conforming HPLC
Appearance of solution Clear Colorless Visual (5g to 50mL water)
Water < 0.5% Maximum Karl Fisher
Residue on Ignition < 0.1% Maximum Pyrolysis
Fumaric Acid < 0.5 % Maximum HPLC
Iron < 5 PPM Maximum Spectroscopy
Heavy Metals as Lead < 10 PPM ICP
Assay (calculated on anhydrous substance) 99.0% to 101.0% Calculation

These figures are given as a guide. Full specifications available on request.


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