Cinnamic acid  
CAS: 621-82-9
Molecular formula:    C9H8O2
Molecular weight: 148.16 
Appearance: White to light yellow crystal powder 
Fragrance: Unique scent 
Purity:  ≥99% 
Melting point: 132.5-134.5℃
Heavy metals:  ≤10ppm 
Residue on ignition:  ≤0.1% 
Usage: The main use of cinnamic acid is in the manufacture of the methyl, ethyl, and benzyl esters for the perfume industry. 
Ethyl ester used in glass prisms, lenses. Some esters, such as chaulmoogryl and other derivatives, are used in medicine. 
Packing: 25kg/plastic bag