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Maleic Anhydride

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Maleic Anhydride molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 6 grades and pack sizes of Maleic Anhydride (CAS 108-31-6). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS108-31-6
Molecular formulaC4H2O3
Molecular weight98.06 g/mol
IUPAC namefuran-2,5-dione
Synonymsfuran-2,5-dione · 2,5-Furandione · Toxilic anhydride · Maleic acid anhydride · cis-Butenedioic anhydride · Dihydro-2,5-dioxofuran
Safety & Hazards (GHS) Danger
Corrosive Corrosive Irritant Irritant Health hazard Health hazard
  • H302 Harmful if swallowed
  • H314 Causes severe skin burns and eye damage
  • H317 May cause an allergic skin reaction
  • H318 Causes serious eye damage
  • H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
  • H372 Causes damage to organs through prolonged or repeated exposure

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma MALEIC ANHYDRIDE, 99% M188-1KG-A
M188-25G-A
M188-25KG-A
M188-5KG-A		 Request Quote
Sigma MALEIC ANHYDRIDE, PURISS., >=99.0% (NT) 63200-100G-F
63200-500G-F		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.