检验项目
Tests |
标准
Standard |
外 观
Appearance |
白色结晶性粉末
Crystalline white powder |
鉴别
Identification
|
红外IR |
薄层色谱TLC |
钾反应
Reaction for potassium |
比旋光度[α]20D
Specific optical rotation |
-0.3°~+0.3° |
溶解性
Solubility |
易溶于水,几乎不溶于丙酮
Soluble in water, practically insoluble in acetone |
水溶液(10%)
Solutiin in water
|
无色透明
Conmplete clear without anycolour
|
PH值(5%) |
6.5~7.5 |
相关物质(%)
Related Substances |
≤ 0.5 |
水份含量(%)
Water
|
4.0-6.5 |
铵盐(NH4+)(ppm)
Ammonium
|
≤200 |
重金属(Pb)(ppm)
Heavy metals
|
≤10 |
砷(As)(ppm)
Arsenic
|
≤2 |
硫酸盐(SO42-)(ppm)
sulphate
|
≤100 |
氯化物(Cl-)(ppm)
Chlorides
|
≤100 |
铁(Fe)(ppm)
Iron
|
≤30 |
含量(%)
Assay |
98.0 - 102.0 |
微生物
Microbiological |
好氧菌 Aerobic bacteria
≤1000/gr |
霉菌Fungi
≤100/gr
|
大肠杆菌E.Coli
无 absent/gr |