Maleic Anhydride Ma Organic Reagent CAS No. 108-31-6

• CAS No.: 108-31-6
• Formula: C4H2O3
• EINECS: 203-571-6
• Model NO.: Maleic Anhydride 99%
• Type: Synthesis Material Intermediates
• Appearance: Powder
• Quality: Industrial
• Colour: White
• Transport Package: Bag
• Trademark: optinal
• Origin: China
• HS Code: 2929101000
• Production Capacity: 30002tons/Month

Product Description

Item	Standard
Product Name	MA ,Maleic Anhydride,2, 5-Furandine,Cis-Butenedioic Anhydrides
Content (w, %)	≥99.5%
CAS NO	108-31-6
EINECS No.	203-571-6
Appearance	White flake active granular crystal
Melting chroma / Hazen unit	≤25
Crystallization point / ºC	≥52.5
Mass fraction of burning residue /%	≤0.005
Mass fraction of iron (calculated by FE)/( μ g/g)	≤3
Molecular Formula	C4H2O3
Application	Coating Auxiliary Agents, Leather Auxiliary Agents etc.

 Maleic anhydride is colorless crystal with strong pungent smell. Its freezing point is 52.8 ºC, boiling point is 202 ºC, and it is easy to sublimate. It is mainly prepared by oxidation of n-butane or butene in benzene or C4 fraction. It is the raw material for unsaturated polyester production and organic synthesis. 

Product nature 
Colorless orthogonal acicular crystal or white crystalline powder. Soluble in water, acetone, benzene, chloroform and other organic solvents. Solubility in the following solvents at 25 ºC (gloog): acetone 227, ethyl acetate 112, chloroform 52.5 I benzene 50 I toluene 23.4; O-xylene 19.4; Carbon tetrachloride 0 60; Petroleum ether 0.25. Dissolve in alcohol to form ester. Soluble in dioxane. Sublimation by heat. In case of high heat, open fire or contact with oxidant, it may cause combustion. Corrosive. Slowly hydrolyze in cold water to form maleic acid. Contact with strong oxidants can cause combustion and explosion. If the temperature exceeds 66 ºC, polymerization will occur in contact with amines or alkali metals.

 

Molecular weight	98.0581
Density	1.48
Melting point	52-55ºC
Boiling point	200 °C (lit.)
Flash point	218 °F
Water solubility	79 g/100 mL (25ºC)
Vapor pressure	0.16 mm Hg ( 20 °C)