Fumaric acid
CAS 110-17-8
EC 203-743-0
Formula C4H4O4
MW 116.07 g/mol
Sweeteners & Food Additives Food & NutritionPersonal Care & Cosmetics Flavoring & AcidulantpH Regulation & BufferingPreservation & Biocide
Description
Fumaric acid (CAS 110-17-8, E297, FEMA 2488) is a naturally occurring organic acid found in fumitory plants and certain fungi. Also known as boletic acid or FC 33, it is the trans-isomer of maleic acid and carries EC number 203-743-0 with the molecular formula C4H4O4.
In food and beverage manufacturing, fumaric acid functions as an acidulant and pH buffer, delivering a sharp, fruit-like tartness at lower use levels than citric acid due to its higher acidity equivalent. In personal care formulations, it acts as a pH adjuster and skin conditioner, helping stabilize emulsions and maintain dermal compatibility across a range of product types.
Fumaric acid is supplied as a fine crystalline powder meeting FCC, Ph.Eur., and E297 standards, with full REACH compliance. It is available in food-grade and cosmetic-grade specifications, typically packed in 25 kg bags or bulk quantities. HS code 29171900 applies for import and customs classification.
In food and beverage manufacturing, fumaric acid functions as an acidulant and pH buffer, delivering a sharp, fruit-like tartness at lower use levels than citric acid due to its higher acidity equivalent. In personal care formulations, it acts as a pH adjuster and skin conditioner, helping stabilize emulsions and maintain dermal compatibility across a range of product types.
Fumaric acid is supplied as a fine crystalline powder meeting FCC, Ph.Eur., and E297 standards, with full REACH compliance. It is available in food-grade and cosmetic-grade specifications, typically packed in 25 kg bags or bulk quantities. HS code 29171900 applies for import and customs classification.
Physical Properties
| Melting Point | 200 °C (sublm) |
| Boiling Point | 522 °C |
| Density | 1.635 g/cm³ @ Temp: 20 °C |
| Flash Point | 230 °C |
| Appearance | Fumaric acid is a colorless to white, odorless crystalline powder. Fruity-acidic taste. |
| Color | White |
| Odor | odorless |
| Form | Fine Crystalline Powder |
| Water Solubility | 0.63 g/100 mL (25 ºC) |
| Vapor Pressure | 1.7 mm Hg ( 165 °C) |
| Refractive Index | 1.5260 (estimate) |
| pH | 2.1 (4.9g/l, H2O, 20℃) |
| Log P | -4.02 at 20℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H319H402
P
P273P280P501P264+P265P337+P317P305+P351+P338
Trade & Regulatory
| HS Code | 29171900 |
| UN Number | 9126 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 1 |
Other Names
(E)-but-2-enedioic acidE297FC 33FumarateBoletic acidLichenic acid
Related Products
Raw Materials
Derivatives
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