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%
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