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Appearance: White crystal power, no visible or dark impurities
Purity (HPLC): ≥99.5%
Loss on Drying (105℃,3hr): ≤0.3%
Loss on Ignition(600℃, 3hr): ≤0.1%
Melting point: 154℃～158℃
Specific rotation[α]20D（C=5，H2O，24h）: +100°～+104°
Heavy metals : ≤0.0010%
Arsenic ≤0.0002%
Chlorine ≤0.0010%
Sulphate ≤0.0010%
