Conform with the standard of fcc iv Appearance : white crystalline powder Assay(c6h8o2) : 99.0-101.0% Heavy metal(as pb) 10ppm Water 0.5% Arsenic(as as) 2ppm Melting range 132-135pc Lead(pb) 5ppm Mercury(as hg) 1ppm Aldehydes(as hcho) 0.1% Residue on ignition 0.2%
