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White Powder

smell

tasteless

content，%

98.5～101.0

pH（0.5%aq）

4.0～6.0

Nitrogen content，%

35.0～35.5

melting point,℃

＞225

heavy metal，mg/kg

≤10

Loss on drying, %

＜0.15

Ignition residue，%

＜0.10

Optical Rotation，°

 -0.1 ～ +0.1