| ≥1 piece |
Appearance White crystal or crystalline powder,odorless;taste acidic, soluble in water
Assay (C4H6O5) ≥99.0%
Fumaric acid ≤0.1%
Heavy Metal ≤20ppm
Arsenic(As) ≤2ppm
Sulfate(SO4) ≤300ppm
Chloride(Cl) ≤100ppm
Melting Point 95 ?? -105 ??
Specific rotation[a]20D -1.6 ?? ~ -2.6 ??