MALEIC ANHYDRIDE

PRODUCT IDENTIFICATION
CAS NO. 108-31-6

MALEIC ANHYDRIDE
EINECS NO. 203-571-6
FORMULA

C4H2O3
MOL WT. 98.06

H.S. CODE

 2917.14.5000
TOXICITY  
SYNONYMS cis-Butenedioic acid anhydride; Toxilic anhydride; MA;
2,5-Dihydro-2,5-dioxofuran; 2,5-Furandione; 2,5-Furanedione; Maleic acid anhydride; Maleic anhydride; Anhydrid kyseliny maleinove; Maleic acid anhydride; Maleinanhydrid; Other RN: 184288-31-1
SMILES

C1(OC(=O)C=C1)=O

CLASSIFICATION

Carboxylic acid anhydride

EXTRA NOTES

UN2215 [Corrosive]

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

White crystals
MELTING POINT 51 - 53 C
BOILING POINT 202 C (Decomposes)
SPECIFIC GRAVITY

1.48
SOLUBILITY IN WATER hydrolysis
pH  
VAPOR DENSITY 3.4

AUTOIGNITION

 477 C

NFPA RATINGS

 Health: 3; Flammability: 1; Reactivity: 1

REFRACTIVE INDEX

  
FLASH POINT 103 C
STABILITY Stable under ordinary conditions.

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking

Google Scholar Search

Drug Information Portal (U.S. National Library of Medicine) - Maleic anhydride

PubChem Compound Summary - Maleic anhydride

IPCS INCHEM -  Cyclic acid anhydrides

Drug Bank -  Maleic anhydride

KEGG (Kyoto Encyclopedia of Genes and Genomes) -  Maleic anhydride

http://www.ebi.ac.uk/ -  Maleic anhydride

http://www.ncbi.nlm.nih.gov/ -  Maleic anhydride

Material Safety Data Sheet

Local:
Maleic Anhydride is the anhydride of cis-butenedioic acid (maleic acid) which carboxylic acid groups are next to each other in the cis form. Maleic Anhydride has a cyclic structure with a ring containing four carbon atoms and one oxygen atom. It is soluble in acetone, hydrolyzing in water. It is prepared in commerce by the oxidation of benzene with catalyst at high temperatures or by the reaction of C4 (butane) with oxygen in the presence of vanadium catalyst. It is used in 1,4-cyclo polyaddition and polycondensation as a dienophile. Maleic Anhydride's biggest single use is in the manufacture of unsaturated polyester resins for use in fibre-reinforced plastics in the automotive, construction, marine, consumer goods and agricultural industries. Producers are working at capacity, but maleic supplies are barely adequate for market requirements due to planned and unplanned downtime in recent days and continued strong demand. 

Maleic Anhydride has attractive molecule structure in chemistry. Its reactivity of the two carbonyl groups and the solid bond in conjugation with the two carbonyl oxygens provide broad applications in commerce. Examples of reactions which maleic anhydride are :

  • Acylation
  • Alkylation
  • Amidation
  • Cycloaddition
  • Decomposition and Decarboxylation
  • Diels-Alder reaction
  • Electrophilic Addition and Nucleophilic Addition
  • Ene Reaction
  • Esterification
  • Formation of Acid Chloride
  • Grignard Reactions
  • Halogenation
  • Heterogeneous catalytic reduction
  • Hydration and Dehydration
  • Hydroformylation
  • Isomerization
  • Ligation
  • Michael Addition
  • Ozonolysis and Oxidaton
  • Polymerization

APPLICATIONS: Unsaturated polyester resins, lubricating oil additives, copolymers, fumaric acid, agricultural chemicals, malic acid, sulfosuccinic acid esters, alkenyl succinic anhydrides and alkyd resins.
SALES SPECIFICATION

APPEARANCE

White crystals

PURITY

99.5% min

SOLIDFICATION POINT

52.40 C min

MOLTEN COLOR

25 max APHA

TRANSPORTATION
PACKING 25kgs in bag
HAZARD CLASS 8 (Packing Group: III)
UN NO.

2215
SAFETY INFORMATION

HAZARD OVERVIEW

Moisture sensitive. Harmful if swallowed. Causes eye and skin burns. Causes digestive and respiratory tract burns. May cause allergic respiratory and skin reaction. Corrosive to metal in aqueous solution. Sublimes (goes directly from solid to vapor form) readily at room temperature. Target Organs: Lungs, respiratory system, eyes, skin.

GHS

 
SIGNAL WORD

Danger

PICTOGRAMS

HAZARD STATEMENTS

H302-H314-H317-H334

P STATEMENTS

P261-P280-P305 + P351 + P338-P310
EC DIRECTIVES

 
HAZARD CODES

RISK PHRASES

22-34-42/43

SAFETY PHRASES

22-26-36/37/39-45
PRICE INFORMATION

 

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