Maleic anhydride CAS 108-31-6
Chemical Full Name: Maleic Anhydride
Abbreviation: MA
CAS Registry Number: 108-31-6
Synonyms: 2,5-Furandione, cis-Butenedioic anhydride
Molecular Formula: C₄H₂O₃
Molecular Weight: 98.06
Appearance: Orthorhombic colorless needle-shaped or flake crystals; white solid under normal temperature with a sharp acidic irritating odor
HS Customs Code: 2917 14 00
UN Hazard Code: UN2215
Industrial Purity Standard: ≥99.7%
Melting Color (Hazen): ≤8
Residue on Ignition: Undetectable
MOQ (Minimum Order Quantity): 1 Full Container Load (1 FCL)
Sample Service: Laboratory test samples are available; customers only bear the freight cost
Standard Packaging: 25kg PE-lined woven bags, 1000kg bulk IBC totes
Products Description of Maleic anhydride CAS# 108-31-6
Maleic anhydride is the cyclic anhydride derived from maleic acid, with stable crystalline morphology recrystallized from chloroform or diethyl ether to form neat needle crystals.
- Melting Point: 60 ℃
- Boiling Point: 82 ℃ under 1.8665 kPa vacuum condition
- Relative Density: 1.3146 (60 ℃)
- Vapor Pressure: 0.2 mmHg at 20 ℃
- Solubility Performance: Fully soluble in acetone, chloroform and diethyl ether; slightly soluble in petroleum ether; reacts rapidly with water
- Core Chemical Reactivity
- Hydrolysis: Undergoes hydrolysis with water to generate maleic acid
- Esterification: Reacts with various alcohols to produce corresponding maleate ester derivatives
- Diels-Alder cycloaddition: Highly reactive with conjugated dienes to form cyclic adducts
- Chemical Stability: Stable under sealed, cool and dry storage conditions; strictly incompatible with water, strong oxidants, strong alkalis, amines and active metals
- Safety Hazard Property: Classified as toxic corrosive hazardous chemical; causes severe irritation and damage to human eyes, skin and respiratory mucous membranes; GHS hazard label marked with Danger signal word
Parameters
| Parameter | Value |
| Melting point | 51-56 °C (lit.) |
| Boiling point | 200 °C (lit.) |
| density | 1.48 |
| bulk density | 700-800kg/m3 |
| vapor density | 3.4 (vs air) |
| vapor pressure | 0.16 mm Hg ( 20 °C) |
| refractive index | 1.4688 (estimate) |
| Fp | 218 °F |
| storage temp. | Store below +30°C. |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly) |
| pka | 0[at 20 ℃] |
| form | powder |
| color | White |
| PH | 0.8 (550g/l, H2O, 20℃)Hydrolysis |
| Odor | Mild acrid odor. |
| explosive limit | 1.4-7.1%(V) |
| Water Solubility | 79 g/100 mL (25 ºC) |
| Sensitive | Moisture Sensitive |
| Merck | 14,5704 |
| BRN | 106909 |
| Henry’s Law Constant | (atm·m³/mol): Not applicable – reacts with water |
| Exposure limits | NIOSH REL: TWA 1 ppm (0.25 mg/m³ ), IDLH 10 ppm; OSHA PEL: TWA 0.25 ppm; ACGIH TLV: TWA 0.25 ppm with an intended change of 0.1 ppm. |
| Dielectric constant | 51.0（60℃） |
| Stability | Stable. Combustible. Incompatible with water, strong oxidizing agents, alkali metals, strong bases, amines, most common metals, polymerization catalysts and accelerators. |
| InChIKey | FPYJFEHAWHCUMM-UHFFFAOYSA-N |
| LogP | -2.61 at 20℃ |
| CAS DataBase Reference | 108-31-6(CAS DataBase Reference) |
| NIST Chemistry Reference | 2,5-Furandione(108-31-6) |
| EPA Substance Registry System | Maleic anhydride (108-31-6) |
Safety Information
| Item | Details |
| Hazard Codes | C |
| Risk Statements | 22-34-42/43 |
| Safety Statements | 22-26-36/37/39-45 |
| OEB | C |
| OEL | TWA: 1 mg/m3 (0.25 ppm) |
| RIDADR | UN 2215 8/PG 3 |
| WGK Germany | 1 |
| RTECS | ON3675000 |
| F | 21 |
| Autoignition Temperature | 870 °F |
| TSCA | Yes |
| HS Code | 2917 14 00 |
| HazardClass | 8 |
| PackingGroup | III |
| Hazardous Substances Data | 108-31-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 1090 mg/kg LD50 dermal Rabbit 2620 mg/kg |
| IDLA | 10 mg/m3 |
Product Application of Maleic anhydride CAS# 108-31-6
Maleic anhydride acts as a fundamental organic chemical intermediate with cross-industry applications covering resin manufacturing, fine chemicals, pharmaceutical & agrochemical sectors:
- Synthetic Resin Industry
Core raw material for producing unsaturated polyester resin and alkyd resin; key feedstock to synthesize downstream chemical products including 1,4-butanediol, γ-butyrolactone, tetrahydrofuran and succinic acid
- Pharmaceutical & Pesticide Manufacturing
Indispensable intermediate for the synthesis of multiple pharmaceutical active pharmaceutical ingredients (APIs) and pesticide active components
- Fine Chemical Auxiliary Industry
Applied in paper sizing agents, paint modifiers, lubricant oil additives, water treatment scale inhibitors, plastic processing aids and copolymer monomer production
- Other Scenarios
Raw material for food-grade oil preservatives, ink additives, fumaric acid and tartaric acid synthesis
Factory and Equipment Show
Fast delivery time
Inventory 2-3 working days New production 7-10 working days
Reviews
There are no reviews yet.