項(xiàng)目

Items

規(guī)格說明

Specification

實(shí)測數(shù)據(jù)

Results

外觀

Description

白色結(jié)晶或結(jié)晶性粉末

White crystal or crystalline powder

白色結(jié)晶或結(jié)晶性粉末

White crystal or crystalline powder

鑒別

Identification

呈正反應(yīng)

positive reaction

呈正反應(yīng)

positive reaction

PH

酸度

3.5-5.5

         5.0

干燥失重

Loss on drying

≤0.50%

0.31%

溶液的澄清與顏色

clarity and color of solntion

符合規(guī)定

complies

符合規(guī)定

complies

 硫酸鹽

Sukfate

≤0.1%

<0.06%

有關(guān)物質(zhì)

riatecl substances

符合規(guī)定

complies

符合規(guī)定

complies

含量

assary

≥98%

99.21%

判定

conclusion

USP 36