maleic anhydride
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Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
108-31-6
C4H2O3
Uses:
Applied to synthesize unsaturated polyester resins, alkyd resins, etc.
Names and Identifiers
| Name | Maleic anhydride |
| Synonyms | MA 2,5-FURANDIONE 2,5-Furandione furan-2,5-dione MaleicAnhydride MALIEC ANHYDRIDE Maleic anhydride ANHYDRIDE MALEIC TOXILIC ANHYDRIDE Sodium n-amylxanthate cis-Butenedioic anhydride |
| CAS | 108-31-6 |
| EINECS | 203-571-6 |
| InChI | InChI=1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H |
| InChIKey | FPYJFEHAWHCUMM-UHFFFAOYSA-N |
Physico-chemical Properties
| Molecular Formula | C4H2O3 |
| Molar Mass | 98.06 |
| Density | 1.48 |
| Melting Point | 51-56 °C (lit.) |
| Boling Point | 200 °C (lit.) |
| Flash Point | 218°F |
| Water Solubility | 79 g/100 mL (25 ºC) |
| Vapor Presure | 0.16 mm Hg ( 20 °C) |
| Vapor Density | 3.4 (vs air) |
| Appearance | White powder |
| Color | White |
| Exposure Limit | NIOSH REL: TWA 1 ppm (0.25 mg/m3), IDLH 10 ppm; OSHA PEL: TWA0.25 ppm; ACGIH TLV: TWA 0.25 ppm with an intended change of 0.1 ppm. |
| Merck | 14,5704 |
| BRN | 106909 |
| pKa | 0[at 20 ℃] |
| PH | 0.8 (550g/l, H2O, 20℃)Hydrolysis |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with water, strong oxidizing agents, alkali metals, strong bases, amines, most common metals, polymerization catalysts and accelerators. |
| Sensitive | Moisture Sensitive |
| Explosive Limit | 1.4-7.1%(V) |
| Refractive Index | 1.4688 (estimate) |
| Physical and Chemical Properties | character orthorhombic crystal system colorless needle-like or plate-like crystals. melting point 52.8 ℃ boiling point 202 ℃ relative density 1.480 flash point 110 ℃ soluble in water to produce maleic acid. Dissolve in ethanol and produce esters. |
| Use | It is used as a raw material for the production of 1, 4-butanediol, γ-butyrolactone, Tetrahydrofuran, succinic acid, unsaturated polyester resin, alkyd resin, etc., and is also used for pharmaceuticals and pesticides |
Risk and Safety
| Hazard Symbols | C – Corrosive |
| Risk Codes | R22 – Harmful if swallowed R34 – Causes burns R42/43 – May cause sensitization by inhalation and skin contact. |
| Safety Description | S22 – Do not breathe dust. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2215 8/PG 3 |
| WGK Germany | 1 |
| RTECS | ON3675000 |
| FLUKA BRAND F CODES | 21 |
| TSCA | Yes |
| HS Code | 2917 14 00 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 1090 mg/kg LD50 dermal Rabbit 2620 mg/kg |
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