FUMARIC ACID HWS FUMARIC ACID FOOD GRADE FUMARIC ACID CWS
Properties:
White odorless powder or crystalline solid particles, with speical sourness that is as strong as 1.5 times of citric acid. It is soluble in ethanol (5.76g/100g,30℃), slightly soluble in water (0.63g/100ml,25℃) and in ether, and very slightly soluble in chloroform. It has no hygroscopicity, and will sublime at 200℃. Boiling point: 290℃ (decompose). It will turn to maleic anhydride at 230℃, and will generate DL-malic acid if boiled with water.
Solubility: (Unit: g/100g)
25 oC water |
0.7 |
26 oC ethanol |
5.76 |
27 oC xylene |
0.03 |
Specification: (FCCIV, 1996)
Item |
Unit |
Index |
Purity (base on C4H4O4) |
% |
99.50~100.50 (dry basis) |
Heavy metal (base on Pb) |
PPM |
≤ 10 |
Arsenic (base on As) |
PPM |
≤ 3 |
Water content |
% |
≤ 0.5 |
Melting range |
oC |
286~302 |
Residue on ignition |
% |
≤ 0.1 |
Chroma (in 5% ethanol) |
# |
≤ 15 |
Maleic acid |
% |
≤ 0.1 |
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