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Maleic anhydride;2,5-Furandine;Butenedioic anhydride;cis-Butenedioic anhydride;Toxilic anhydride;cis-Butenedioic anhydride
Molecular formula : C4H2O3
MW : 98.06
CAS No. :108-31-6

nature : rhomboidal colorless needle or flake crystals. Flammable, easy sublimation. 52.8 ° C melting point, boiling point of 202 ° C, 179.5 ° C (53.3kPa), 155.9 ° C (26.7kPa), 135.8 ° C (13.3kPa), 122 ° C (7.98kPa), 111. 8 ° C (not good), 95 ° C (2.67 kPa) and 78.7 ° C (1.33kPa.Conclusion), 63.4 ° C (0.67kPa), the self-ignition point of 447 ° C and relative density of 1.480 (20 / 4 ° C ). Water soluble form maleic acid. At 25 ° C, 100g solvent solubility : 227g acetone, ethyl acetate 65,536, 52.5g chloroform, benzene 50g. LOCA soluble in water as malic acid, ethanol and generates soluble ester, micro-soluble carbon tetrachloride and crude gasoline. Flash point (open cup) 110 ° C

Preparation : Maleic anhydride production of the main methods of benzene oxidation, and oxidation butene are butane oxidation, but still mainly benzene oxidation. 1. Benzene oxidation of benzene in V-Mo-P catalyst role, in the bed oxidation reaction occurred, generating maleic anhydride, the reaction temperature to 365 ° C (reaction bed FBC also available, but the high consumption). Then water absorption generation maleic acid, and then azeotropic distillation and dehydration scratching film to be finished. 2. Butane (or butylene) butane oxidation (or butylene) in V-Mo catalyst, by air or oxygen oxidation of maleic anhydride, the reaction temperature is 350-400 ° C. Then, as water absorption, dehydration and purification to be finished.

purposes : mainly for the production of unsaturated polyester resins, alkyd resins, pesticide malathion, efficient and low toxicity pesticides 4049, a long-term iodine amine raw materials. Also paint, Malay Rosin, polymaleic anhydride and maleic anhydride - styrene copolymer. Ink-producing agents, and paper additives, plasticizers and tartaric acid, fumaric acid, tetrahydrofuran and other organic chemicals.


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Structure:
More Detailed Data:
1) Maleic anhydride;cis-Butenedioic anhydride;2,5-Furandione;2,5-furandion;anhydrid kyseliny maleinove;anhydride maleique;anhydride maleique (etat vitreux);dihydro-2,5-dioxofuran
2) maleic anhydride;cis-butenedioic anhydride
3) Maleic anhydride
4) cis-Butenedioic anhydride;maleic anhydride
5) maleic anhydride;cis-butenedioic anhydride
6) 2,5-Furandione;MA;Maleic anhydride
7) maleic anhydride
8) Maleic Anhydride
9) Maleic Anhydride
10) Maleic Anhydride
Notice Some description was translated by software and the data is only as a reference.
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