|
Appearance
|
Colorless crystals or white crystalline powder
|
|
Assay
|
98-101.0%
|
|
Alcohol insoluble matter
|
Passes test
|
|
Insoluble matter in water
|
Max 0.005%
|
|
Nitrogen compounds (as N)
|
Max 0.002%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Sulphate (SO4)
|
Max 0.002%
|
|
Arsenic (As)
|
Max 0.0002%
|
|
Barium (Ba)
|
Max 0.005%
|
|
Calcium (Ca)
|
Max 0.01%
|
|
Iron (Fe)
|
Max 0.0005%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Manganese (Mn)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.005%
|
|
Sodium (Na)
|
Max 0.005%
|
|
Strontium (Sr)
|
Max 0.005%
|
|
Water (H2O)
|
51 - 55%
|
|
pH (5 % solution)
|
5.0 - 6.5
|
|
Bromide (Br)
|
Max 0.05%
|