BENZOIC ACID, PRIMARY STANDARD | Chemical Formula : C!6H!5COOH | CAS # : 65-85-0 | Specifications : Assay 99.95 - 100.05 %, Chlorine compounds (%) 0.005 % , Freezing point (deg C) 122 - 123 C, Heavy metals (Pb) 0.0005 % , Insoluble in methanol (%) 0.005 % , NIST Traceable, Residue after ignition 0.005 % , Substances reducing permanganate, Sulfur compounds 0.002 %