Fumaric acid
CAS 110-17-8C4H4O4116.07 g/mol
Fumaric acid is a butenedioic acid in which the C=C double bond has E geometry. It is an intermediate metabolite in the citric acid cycle. It has a role as a geroprotector, a food acidity regulator and a fundamental metabolite. It is a conjugate acid of a fumarate(1-).
IUPAC: (E)-but-2-enedioic acid
PubChem
Physical & Chemical Properties
| Melting Point | 572 to 576 °F (NTP, 1992) |
| Boiling Point | 329 °F at 1.7 mmHg ; sublimes (NTP, 1992) |
| Density | 1.635 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | less than 1 mg/mL at 72 °F (NTP, 1992) |
| Flash Point | 273 °C (open cup) |
| Vapor Pressure | 0.000154 [mmHg] |
| pH | 3,0-3,2 (0,05 % solution at 25 °C) |
| Appearance | Fumaric acid appears as a colorless crystalline solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment. Combustible, though may be difficult to ignite. Used to make paints and plastics, in food processing and preservation, and for other uses. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2917
Data: UN Comtrade
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