specification standards
|
Item |
Specification |
Results |
|
|
|
|
|
Appearance |
white crystalline powder or granular |
passed the test |
|
|
|
|
|
Assay |
99% min |
99.10% |
|
|
|
|
|
loss on drying |
<5.0 |
4.70% |
|
|
|
|
|
F r e e A c i d i t y b a s e d |
<0.30% |
<0.30% |
|
onCH3CH2COOH |
||
|
|
|
|
|
Free alkalinity based on |
|
|
|
NaOH |
<0.30% |
<0.30% |
|
|
|
|
|
Heavy metals |
<0.001% |
<0.001% |
|
|
|
|
|
Arsenic |
<0.0002% |
<0.0002% |
|
|
|
|
|
Fluoride |
<0.003% |
<0.003% |
|
|
|
|
|
Magnesium |
<0.4% |
<0.4% |
|
|
|
|
|
PH value of aqueous solution |
7-9 |
8.5 |
|
|
|
|
|
Storge and Transportation |
|
|
|
|
|
|
|
|
|
|