63200

Maleic anhydride

puriss., ≥99.0% (NT)

• Synonym(s): 2,5-Furandione
• Empirical Formula (Hill Notation): C₄H₂O₃
• CAS Number: 108-31-6
• Molecular Weight: 98.06
• Beilstein/REAXYS Number: 106909
• EC Number: 203-571-6
• MDL number: MFCD00005518
• UNSPSC Code: 12162002
• PubChem Substance ID: 329759813
• NACRES: NA.23

Properties

• vapor density: 3.4 (vs air)
• Quality Level: 200
• vapor pressure: 0.16 mmHg ( 20 °C)
• grade: puriss.
• assay: ≥99.0% (NT)
• form: flakes; powder or crystals
• autoignition temp.: 870 °F
• expl. lim.: 7.1 %
• bp: 200 °C (lit.)
• mp: 51-56 °C (lit.); 52-54 °C
• SMILES string: O=C1OC(=O)C=C1
• InChI: 1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H
• InChI key: FPYJFEHAWHCUMM-UHFFFAOYSA-N

Description

General description

Maleic anhydride is a dehydration product of maleic acid that is of considerable industrial importance.

Application

Maleic anhydride has been used as a reference standard for the determination of the analyte in:

• Workplace air samples by capillary gas chromatography combined with electron capture detection (GC-ECD).

It may be used as a derivatization agent for fatty alcohol ethoxylates in:

• Industrial mixtures, cleaning products and river and sea waters by high performance liquid chromatography (HPLC) coupled with ultraviolet-visible (UV-Vis) diode array detection (DAD).

Other Notes

For the complete dissociation of enzymes into soluble subunits; For the reversible blocking of amino groups (lysine reagent); P.J.G. Butler, J.I. Harris, B.S. Hartley, R. Lebermann; For the maleylation of proteins

Safety Information

• pictograms: GHS08,GHS05,GHS07
• signalword: Danger
• hcodes: H302,H314,H317,H334,H372
• pcodes: P260 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1A - STOT RE 1 Inhalation
• target_organs: Respiratory system
• supp_hazards: EUH071
• Storage Class: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• wgk_germany: WGK 1
• flash_point_f: 217.4 °F - closed cup
• flash_point_c: 103 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges