Maleic Anhydride flakes MA C4H2O3 108-31-6 99.5%

1:MA:White flaky crystal, stimulate a strong odor; 2:Usage:Unsaturated resin, water treatment agent paint 3:Purity:99.5% flake Maleic Anhydride is important organic chemical raw materials, mainly used for synthesis of unsaturated resins, coatings, lubricants additives, such as pharmaceuticals and agricultural chemicals and so on.Orthorhombic colorless needle-like or flaky crystals. Flammable, easy sublimation. Melting point 52.8 °C, boiling point 202 °C, 179.5 °C (53.3kPa), 155.9 °C (26.7kPa), 135.8 °C (13.3kPa), 122 °C (7.98kPa), 111.8 °C (5.32kPa), 95 °C (2.67kPa), 78.7 °C (1.33kPa), 63.4 °C (0.67kPa), ignition point 447 °C, relative density 1.480 (20 / 4 °C). Maleic acid dissolved in water generator. At 25 °C, 100g Solubility: acetone 227g, ethyl acetate 122g, chloroform 52.5g, benzene 50g. Soluble in water, as water loss malic acid, soluble in ethanol and generate ester, slightly soluble in carbon tetrachloride and crude gasoline. Flash point (open cup) 110 °C.

Maleic anhydride (cis-butenedioic anhydride, toxilic anhydride, dihydro-2,5-dioxofuran) is an organic compound with the formula C2H2(CO)2O. In its pure state it is a colourless or white solid with an acrid odour.

Maleic anhydride was traditionally manufactured by the oxidation of benzene or other aromatic compounds. As of 2006, only a few smaller plants continue to use benzene; due to rising benzene prices, most maleic anhydride plants now use n-butane as a feedstock:

2 CH3CH2CH2CH3 + 7 O2 → 2 C2H2(CO)2O + 8 H2O[edit] Reactions

The chemistry of maleic anhydride is very rich, reflecting its ready availability and bifunctional reactivity. It hydrolyzes, producing maleic acid, cis-HO2CCH=CHCO2H. With alcohols, the half-ester is generated, e.g., cis-HO2CCH=CHCO2CH3.

Maleic anhydride is a potent dienophile in Diels-Alder reactions. It is also a ligand for low-valent metal complexes, examples being Pt(PPh3)2(MA) and Fe(CO)4(MA).

MA dimerizes in a photochemical reaction to cyclobutane tetracarboxylic dianhydride CBTA. This compound is used in the production of polyimides and as an alignment film for liquid crystal displays

Property	unit	Value
Appearance		White Pastille ,Briquet Molten type or flakes
Purity(Total acid)	wt%	99.50 Min
Solidification Point	°C	52.45 Min
Molten Color	APHA	20 Max
Ash	wt/%	0.003 Max
Iron	PPM	5 Max
Thermal stability 140°C 2h		30 Max
Thermal stability 185°C 15min

Maleic Anhydride flakes MA C4H2O3 108-31-6 99.5%