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MALEIC ACID AR

cis-Butenedioic acid, Toxilic acid

COAs

Packings

100 g (00100)

500 g (00500)

1PW1200100 1PW1200500
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Article No. 04488 Grade AR
Purity 99.5% CAS No. 110-16-7
Molecular Formula C4H4O4 Molecular Weight 116.08
H.S. Code 2917.1910 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour White crystalline
Odour Faint, acidulous odor pH value <7
Melting point/ Freezing point [°C] 137 - 140 °C Flash point [°C] 127 °C
Boiling point [°C] 160 °C Density [g/cm3] 1.58
Solubility in water [% weight] 788 g/l at 20 °C Partition coefficient Log Pow octanol / water at 20°C 0.48
Explosion limits -lower [%] 2.70%

Specifications

Appearance White crystalline powder Assay Min 99.5%
Insoluble matter in water Passes test Sulphated ash Max 0.005%
Chloride (Cl) Max 0.001% Sulphate (SO4) Max 0.001%
Cadmium (Cd) Max 0.0001% Calcium (Ca) Max 0.0005%
Copper (Cu) Max 0.0005% Iron (Fe) Max 0.0005%
Lead (Pb) Max 0.0005% Magnesium (Mg) Max 0.0005%
Potassium (K) Max 0.002% Sodium (Na) Max 0.002%
Zinc (Zn) Max 0.0005% Fumaric acid Max 0.5%
Water (by KF) Max 2.0%

Safety Information and Hazard Symbols

Corrosion Exclamation Mark
Symbol: GHS05, GHS07
 Signal Word: Danger
 UN No.: 3261
 IMCO Class No.: 8
 Packing Group: III
 Hazardous Statement: H302-H314-H317-H335
 Precaution Statement: P260-P280-P301+P312-P303+P361+P353-P305+P351+P338
Revision Date: 24-Mar-2026

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