Cinnamic acid CAS NO.: 140-10-3 Appearance Light Yellow Powder Molecular Formula: C9H8O2 Molecular Weight: 148.16 Assay %: 99 Melting Range C: 132 Arsenic (As) %: 0.0003 Heavy Metal (Pb) %: 0.001 Residue on Ignition (sulphates) %: 0.05 Use: Used in L-Phenylalanine, perfumes, cosmetics, pharmacy etc.; also used as plant growth regulator, antiseptic of fruit and vegetables etc. Storage & Transportation: stored in airtight containers in cool, airy and heat insulated place, protect against rain and insolation.