Maleic Anhydride (MA 99.5%min, CAS 108-31-6) is a white crystalline flaky or pellet anhydride with strong irritant odour. It is a key unsaturated dicarboxylic anhydride raw material, widely used in unsaturated polyester resin, coating, surfactant and pesticide synthesis. TNJ Chemical is the leading manufacturer and exporter since 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To inquire more, please contact sales@tnjchem.com
Product Information
Name: Maleic Anhydride
CAS No.: 108-31-6
Molecular Formula: C₄H₂O₃
Molecular Weight: 98.06
HS Code: 29171400
UN No.: 2215
Appearance: White flaky / pellet crystal
Melting point: 52.8 ℃
Boiling point: 202 ℃
Density: 1.48 g/cm³
Solubility: Reacts with water to form maleic acid; soluble in acetone, ethanol and ethyl acetate
Stability: Easy to hydrolyze upon contact with moisture; avoid water, amines and strong alkali
| Item | Standard |
|---|---|
| Assay | ≥99.5% |
| Melting Point | 52.0–53.5 ℃ |
| Ash | ≤0.005% |
| Iron (Fe) | ≤5 ppm |
| Colour (APHA) | ≤25 |
Use & Application
Unsaturated Polyester Resin (UPR): The largest consumption field, core monomer for unsaturated polyester resins applied in fiberglass products, FRP, moulds and corrosion-resistant equipment.
Coating & Alkyd Resin: Raw material for water-based coatings, anti-corrosion paint and oil-free alkyd resin.
Surfactant Industry: Manufacture of succinic acid surfactants, wetting agents, emulsifiers and detergent additives.
Pesticide: Starting material for herbicides, insecticides and fine intermediates.
Plastic Modifier: Grafting monomer for PP, PE and EVA to improve polarity and adhesion.
Water Treatment: Raw material for scale inhibitors and dispersants.
Packaging & Storage
25kg PE-lined woven bag / 500kg big bag.
Store in dry, cool, ventilated warehouse, tightly sealed, strictly prevent moisture.
Keep away from alkalis, amines and oxidants.
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