|
Appearance
|
White crystalline powder or crystals or chunks
|
|
Assay (complexometric)
|
Min 99.0%
|
|
Insoluble matter
|
Max 0.005%
|
|
Oxidizing substances
|
Max 0.005%
|
|
Loss on drying (at 150°C)
|
14.0-16.0%
|
|
pH (5% w/v solution in water; 25°C)
|
5.2-8.2
|
|
Calcium (Ca)
|
Max 0.05%
|
|
Iron (Fe)
|
Max 0.0002%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Potassium (K)
|
Max 0.0025%
|
|
Sodium (Na)
|
Max 0.005%
|
|
Strontium (Sr)
|
Max 0.1%
|