羥丙茶堿
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Characteristics A white, crystalline powder Complies
Identification Positive reaction Complies
Loss on drying ≤0.5% 0.20%
Melting Point 134~136℃ 134.4~135.5℃
Appearance of solution Clear (2.2.1), Colorless (Method II, 2.2.2)
Complies
Acidity or alkalinity ≤0.4ml 0.01mol/L NaOH 0.05ml
Heavy metals ≤20ppm Complies
Sulphated ash ≤0.1% 0.04%
Related substances ≤1.0% Complies
Chlorides ≤400ppm Complies
Assay 98.5~101.0% 99.32%
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