Appearance
|
Blue-green to dark green crystalline powder
|
Assay (iodometric)
|
99.0-102.0%
|
Insoluble matter
|
Max 0.01%
|
Sulphate (SO4)
|
Max 0.01%
|
Chloride (Cl)
|
Max 0.003%
|
Nickel (Ni)
|
Max 0.01%
|
Iron (Fe)
|
Max 0.002%
|
Zinc (Zn)
|
Max 0.01%
|
Calcium (Ca)
|
Max 0.005%
|
Sodium (Na)
|
Max 0.05%
|
Potassium (K)
|
Max 0.01%
|
pH (2% solution in water)
|
5.2 - 5.5
|