Molecular formula:C4H5NO4Mg·2H2OMolecular weight:191.4Properties:white crystal or crystalline powderSpecification:-Quality standard:Enterprise standardStructural formula:ItemStandardAssay [as Mg]≥11%Specific rotary power [α]D20+15.5°∼+17.5°Light transmittance %≥95Chloride≤0.02Sulfate≤0.05Arsenic salt ppm≤5Heavy Metals (as Pb)ppm≤10Ferric salt ppm≤30