Product Description
Fumaric acid is naturally presented in Corydalis, mushrooms and fresh beef. Product precipitated from the water is monoclinic needle-like, prismatic or leaf-like white crystalline or crystalline powder. It is odorless with a special and strong sour, which is about 1.5 times that of the citric acid. It has a melting point 287 ° C, the boiling point of 290 ° C with subjecting to sublimation at temperature above 200 ° C. When being heated to 230 ° C, it will lose water and become maleic anhydride. Its co-boiling with water can produce DL-malic acid. It is soluble in ethanol, slightly soluble in water and ether, but insoluble in chloroform. The pH value of the 3% aqueous solution is 2.0 to 2.5 with a strong buffering performance, in order to maintain the pH of the aqueous solution at around 3.0. This product is non-toxic; rat-oral LD50: 8000mg/kg.
CAS: | 110-17-8 |
MF: | C4H4O4 |
MW: | 116.07 |
EINECS: | 203-743-0 |
Melting point | 298-300 °C (subl.)(lit.) |
density | 1.62 |
vapor pressure | 1.7 mm Hg ( 165 °C) |
FEMA | 2488 | FUMARIC ACID |
Fp | 230 °C |
storage temp. | Store below +30°C. |
solubility | 95% ethanol: soluble0.46g/10 mL, clear, colorless |
form | Fine Crystalline Powder |
pka | 3.02, 4.38(at 25℃) |
color | White |
PH | 2.1 (4.9g/l, H2O, 20℃) |
explosive limit | 40% |
Water Solubility | 0.63 g/100 mL (25 ºC) |
Stability: | Stable at room temperature. Decomposes at around 230 C. Incompatible with strong oxidizing agents, bases, reducing agents. Combustible. |
