Complaint
| Item | Standard |
| Appearance | white crystalline powder |
| Assay (Base on C4H4O4) (%) | 99.50 ~ 100.5 |
| Residue on ignition (%) | ≤ 0.10 |
| Heavy metal (Pb) (%) | ≤ 10 ppm |
| Arsenic (%) | ≤ 3 ppm |
| Moisture (%) | ≤ 0.50 |
| Chroma (in 5% ethanol) (#) | ≤ 15 |
| Maleic acid (%) | ≤ 0.1 |
| Melting point ( ºC) | 286 ~ 302 |
| Storage | in dry and cool place |
| Packing | 25kg/bag |
In food, it is mainly used in the processing of meat products and fish products. Fumaric acid can be used as an acidity regulator, acidulant, antioxidant aid, pickling accelerator, and spice. This product has a strong buffering effect to keep the pH of the aqueous solution at about 3.0, and has an important effect on antibacterial and anti-mildew. At the same time, it has an astringent taste and is one of the strongest sour solid acids. Extend the shelf life of powder products, etc. When fumaric acid is changed to sodium fumarate, the water solubility and flavor are better
