≥1 piece |
Item
|
Specification
|
Characteristics
|
white crystal powder
|
Identification
|
positive reaction
|
M.P.
|
about 190
|
PH
|
2.1-2.6
|
Clarity of solution
|
Clear
|
Color of solution
|
BY7 max
|
copper
|
5ppm max
|
Heavy metal
|
10ppm max
|
Iron
|
2ppm max
|
Oxalic Acid
|
0.2% max
|
Sulphate Ash
|
0.1% max
|
Ratio Absorbances
|
+20.5 - +21.5 Deg
|
organic impurity
|
pass
|
Assay
|
99.0-100.5%
|