C4H6O4 M.W. 118.09
ASSAY(T) .............................. min 99.5%
MELTING POINT ......................... 189-190?C
SULPHATED ASH ......................... max 0.01%
CHLORIDE(Cl) .......................... max 0.001%
SULPHATE(SO4) ......................... max 0.002%
IRON(Fe) .............................. max 0.0005%
HEAVY METALS(Pb) ...................... max 0.0005%
COPPER(Cu) ............................ max 0.0005%
AMMONIUM(NH4) ......................... max 0.001%