108-31-6
Maleic Anhydride
HS Code:2917140000
EINECS No:203-571-6
UN NO.:2215
Product Description
Unsaturated Polyester Resin (UPR): Accounts for over 50% of consumption; used in fiberglass-reinforced plastics (FRP), automotive/marine components, and construction materials.
1,4 - Butylene glycol (BDO): degradable materials (PBS/PBAT), PBT, THF, GBL
Coatings / Alkyd Resins: Modification to enhance hardness, drying properties, and water resistance (industrial paints, wood coatings)
Pesticides: Organophosphorus insecticides such as malathion and 4049.
Pharmaceuticals / Food: Fumaric acid, malic acid (acidity regulators), sulfonamides.
Auxiliaries: lubricating oil additives, papermaking sizing agents, rubber vulcanizing agents.
| Test Item | Technical specification | Analysis Results |
| APPEARANCE | White briquettes | White briquettes |
| Purity (by MA) | 99.5 Min | 99.5 Min |
| Molten Colour | 25 Max | 25 Max |
| Solidifying Point | 52.5 Min | 52.5 Min |
| Ash | 0.005 Max | 0.005 Max |
| Iron | 3 Max | 3 Max |
| Packaging | 25 kg fiber drums / iron drums with PE inner liners; 50 kg / 100 kg iron drums |
| Storage Conditions | Store in a cool, dry, well-ventilated place, away from fire. |
| Appearance | White needle-like / flaky crystals, strong pungent odor |
| Purity | 99.50% |
| Density | 1.484 g/cm³ |
| Chemical Formula | C₄H₂O₃ |
| Molecular Weight | 98.06 |
| Melting Point | 52.8 °C |
| Boiling Point | 202 °C |
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