Maleic anhydride , AR,>99.0%(GC) , 108-31-6
Synonym(s):
2,5-Furandione;2,5-Furanedione;Maleic anhydride
CAS NO.：108-31-6
Empirical Formula: C4H2O3
Molecular Weight: 98.06
MDL number: MFCD00005518
EINECS: 203-571-6
PRODUCT Properties
| Melting point: | 51-56 °C (lit.) |
| Boiling point: | 200 °C (lit.) |
| Density | 1.48 |
| vapor density | 3.4 (vs air) |
| vapor pressure | 0.16 mm Hg ( 20 °C) |
| refractive index | 1.4688 (estimate) |
| Flash point: | 218 °F |
| storage temp. | Store below +30°C. |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly) |
| form | powder |
| pka | 0[at 20 ℃] |
| 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℃ |
Description and Uses
Maleic Anhydride (MAN) is an organic compound with the chemical formula C4H203. It is the acid anhydride of maleic acid and in its pure state it is a colourless or white solid with an acrid odour. Maleic anhydride is truly a remarkable molecule in that it possesses two types of chemical functionality making it uniquely useful in chemical synthesis and applications.
Maleic Anhydride is a multifunctional chemical intermediate with applications in several fields of chemical industry. Its major end use is as feedstock in the production of unsaturated polyester resins (UPR).
These resins are used both in glass-reinforced and in unreinforced applications. The UPR end uses includes a wide range of applications in construction, marine and automobile industries.
In addition, Maleic Anhydride can also be used as raw material in the production of 1,4-butanediol (BDO), gamma- butyrolactone and tetrahydrofuran (THF). It is important to highlight that BDO is one of the world's fastest growing chemicals in the last years.
In the manufacture of polyester resins, fumaric acid, agricultural pesticides, and alkyl resins
Safety
| Symbol(GHS) |    GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H302-H314-H317-H334-H372 |
| Precautionary statements | P260-P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338 |
| Hazard Codes | C |
| Risk Statements | 22-34-42/43 |
| Safety Statements | 22-26-36/37/39-45 |
| RIDADR | UN 2215 8/PG 3 |
| OEB | C |
| OEL | TWA: 1 mg/m3 (0.25 ppm) |
| WGK Germany | 1 |
| RTECS | ON3675000 |
| F | 21 |
| Autoignition Temperature | 870 °F |
| TSCA | Yes |
| HS Code | 2917 14 00 |
| HazardClass | 8 |
| PackingGroup | III |
| Toxicity | LD50 orally in Rabbit: 1090 mg/kg LD50 dermal Rabbit 2620 mg/kg |
| IDLA | 10 mg/m3 |
