|
Item
|
Specification
|
Result
|
|
Assay
|
98.5%~101.5%
|
99.8%
|
|
Appearance
|
White crystalline powder
|
Conforms
|
|
Odor
|
Odorless
|
Conforms
|
|
Identification
|
TLC
|
Conforms
|
|
Identification
|
The infrared spectrum should be consistent with the control spectrum
|
Conforms
|
|
Physical & Chemical Characteristics
|
||
|
Loss on Drying
|
≤0.2%
|
0.10%
|
|
Residue on ignition
|
≤0.1%
|
0.09%
|
|
PH
|
4.1-5.6
|
5.0
|
|
Readily carbonizable
|
Meets the requirements
|
Conforms
|
|
Clarification experiment
|
Meets the requirements
|
Conforms
|
|
Conductivity
|
≤150 us.cm-1
|
33.7us.cm-1
|
|
Chloride
|
≤0.02%
|
Conforms
|
|
Sulfate
|
≤0.02%
|
Conforms
|
|
Ammonium salt
|
≤0.02%
|
Conforms
|
|
Heavy metals
|
≤10ppm
|
Conforms
|