Appearance: almost white powder, odorless, light bitter taste;

Calcium content: 8.2-8.6%;

Nitrogen content: 5.7-6.0%;

Standard: USP32;

Specific optical rotation: +24.0°～+28.5 °;

Loss on drying: ≤5.0%;

Heavy metal: ≤0.002%;

Packaging: 25kg/box;

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