Complaint
Cinnamic acid is an organic compound with the formula C6H5CH=CHCOOH. It is a white crystalline compound that is slightly soluble in water, and freely soluble in many organic solvents. Classified as an unsaturated carboxylic acid, it occurs naturally in a number of plants. It exists as both a cis and a trans isomer, although the latter is more common.
Cinnamic acid is a central intermediate in the biosynthesis of myriad natural products include lignolsto lignin and lignocellulose, flavonoids, isoflavonoids, coumarins, aurones, stilbenes, catechin, and phenylpropanoids. Its biosynthesis is performed by action of the enzyme phenylalanine ammonia-lyase (PAL) on phenylalanine.
Test Item | Standard | Result |
Appearance | White or light yellow crystalline powder | White crystalline powder |
Melting Point | ≥133ºC | 133.5~133.6ºC |
Heavy metal | ≤10 ppm | ≤10 ppm |
Loss on drying | ≤0.50% | 0.37% |
Sulphated ash | ≤0.10% | 0.03% |
Assay | ≥99% | 99.65% |
Conclusion | Qualified | |
