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Product FOB Price Min.Order Supply Ability Supplier
Maleic anhydride
Cas No: 108-31-6
No Data 1 Kilogram 1-100 Metric Ton/Month Dayang Chem (Hangzhou) Co.,Ltd. Contact Supplier
Factory Supply Maleic anhydride
Cas No: 108-31-6
No Data 1 Kilogram 400 Metric Ton/Day Ality Chemical Corporation Contact Supplier
High quality Maleic Anhydride supplier in China
Cas No: 108-31-6
No Data 1 Kilogram 10000 Metric Ton/Year Simagchem Corporation Contact Supplier
Maleic anhydride CAS NO.108-31-6
Cas No: 108-31-6
USD $ 2.0-2.0 / Gram 100 Gram 100 Metric Ton/Month Hebei yanxi chemical co.,LTD. Contact Supplier
Maleic anhydride Cas 108-31-6
Cas No: 108-31-6
No Data 1 Kilogram 100 Metric Ton/Year Wuhan Fortuna Chemical Co.,Ltd Contact Supplier
Maleic anhydride,CAS 108-31-6
Cas No: 108-31-6
USD $ 1.0-1.0 / Kilogram 1 Kilogram 3000 Metric Ton/Year Hefei TNJ chemical industry co.,ltd Contact Supplier
best pric emaleic anhydridehigh quality 6-maleic anhydride108-31-6 manufacturer
Cas No: 108-31-6
USD $ 1.0-1.0 / Gram 10 Gram 1 Metric Ton/Month Hebei Yingong New Material Technology Co.,Ltd . Contact Supplier
Cas No: 108-31-6
No Data 10 Milligram Amadis Chemical Co., Ltd. Contact Supplier
Maleic anhydride CAS: 108-31-6
Cas No: 108-31-6
USD $ 1.0-2.0 / Metric Ton 5 Metric Ton 1000 Metric Ton/Year Henan Sinotech Import&Export Corporation Contact Supplier
TIANFU-CHEM CAS:108-31-6 Maleic anhydride
Cas No: 108-31-6
No Data 1 Gram 1 Metric Ton/Day Henan Tianfu Chemical Co., Ltd. Contact Supplier

108-31-6 Usage

General Description

Colorless crystalline needles, flakes, pellets, rods, briquettes, lumps or a fused mass. Melts at 113°F. Shipped both as a solid and in the molten state. Vapors, fumes and dusts strong irritate the eyes, skin and mucous membranes. Flash point 218°F. Autoignition temperature 890°F. Used to make paints and plastics and other chemicals.


ChEBI: A cyclic dicarboxylic anhydride that is the cyclic anhydride of maleic acid.

Chemical Properties

White solid

Health Hazard

Inhalation causes coughing, sneezing, throat irritation. Skin contact causes irritation and redness. Vapors cause severe eye irritation; photophobia and double vision may occur.

Purification Methods

Crystallise it from *benzene, CHCl3, CH2Cl2 or CCl4. Sublime it under reduced pressure. [Skell et al. J Am Chem Soc 108 6300 1986, Beilstein 17 III/IV 5897, 17/11 V 55.]


In Diels-Alder syntheses (as a dienophile), manufacture of alkyd-type of resins, dye intermediates, pharmaceuticals, agricultural chemicals (maleic hydrazide, malathion), in copolymerization reactions.

Reactivity Profile

Maleic anhydride react vigorously on contact with oxidizing materials. Reacts exothermically with water or steam. Undergoes violent exothermic decomposition reactions, producing carbon dioxide, in the presence of strong bases (sodium hydroxide, potassium hydroxide, calcium hydroxide), alkali metals (lithium, sodium, potassium), aliphatic amines (dimethylamine, trimethylamine), aromatic amines (pyridine, quinoline) at temperatures above 150° C [Vogler, C. A. et al., J. Chem. Eng. Data, 1963, 8, p. 620]. A 0.1% solution of pyridine (or other tertiary amine) in Maleic anhydride at 185°C gives an exothermic decomposition with rapid evolution of gas [Chem Eng. News 42(8); 41 1964]. Maleic anhydride is known as an excellent dienophile in the Diels-Alder reaction to produce phthalate ester derivatives. These reactions can be extremely violent, as in the case of 1-methylsilacyclopentadiene [J. Organomet., Chem., 1979, 179, c19]. Maleic anhydride undergoes a potentially explosive exothermic Diels-Alder reaction with 1-methylsilacyclopenta-2,4-diene at 150C [Barton, T. J., J. Organomet. Chem., 1979, 179, C19], and is considered an excellent dieneophile for Diels-alder reactions [Felthouse, Timothy R. et al. "Maleic anhydride , Maleic Acid, and Fumaric Acid." Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. 2005].

Fire Hazard

Behavior in Fire: When heated above 300°F in the presence of various materials may generate heat and carbon dioxide. Will explode if confined.


Maleic Anhydride is heterocyclic compound used in the manufacture of unsaturated polyester resins. Maleic Anhydride has a wide range of other applications; it is used in synthetic tensides, insecticides, herbicides and fungicides.

Air & Water Reactions

Soluble in water. Reacts slowly with water to form maleic acid and heat.

108-31-6 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (63200)  Maleicanhydride  puriss., ≥99.0% (NT) 108-31-6 63200-500G-F 444.60CNY Detail
Sigma-Aldrich (63200)  Maleicanhydride  puriss., ≥99.0% (NT) 108-31-6 63200-100G-F 375.57CNY Detail
Aldrich (M625)  Maleicanhydride  powder, 95% 108-31-6 M625-1KG 1,478.88CNY Detail
Aldrich (M625)  Maleicanhydride  powder, 95% 108-31-6 M625-25G 138.06CNY Detail
Aldrich (M188)  Maleicanhydride  99% 108-31-6 M188-25KG-A 3,940.56CNY Detail
Aldrich (M188)  Maleicanhydride  99% 108-31-6 M188-5KG-A 848.25CNY Detail
Aldrich (M188)  Maleicanhydride  99% 108-31-6 M188-1KG-A 637.65CNY Detail
Aldrich (M188)  Maleicanhydride  99% 108-31-6 M188-25G-A 441.09CNY Detail
Alfa Aesar (A12178)  Maleic anhydride, 98+%    108-31-6 5000g 756.0CNY Detail
Alfa Aesar (A12178)  Maleic anhydride, 98+%    108-31-6 1000g 234.0CNY Detail
Alfa Aesar (A12178)  Maleic anhydride, 98+%    108-31-6 250g 183.0CNY Detail
TCI America (M0005)  Maleic Anhydride  >99.0%(GC)(T) 108-31-6 500g 150.00CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name maleic anhydride

1.2 Other means of identification

Product number -
Other names Toxilic anhydride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Maleic anhydride is used primarily in the formation of unsaturated polyester resins for use in boats, autos, trucks, buildings, piping, and electrical goods. Lube oil adhesives synthesized from maleic anhydride are used to prolong oil-change intervals and improve engine efficiency. Maleic anhydride is also used to make copolymers, pesticides, and other organic compounds, and in Diels-Alder syntheses.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

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