|
Appearance
|
White to tan crystals or powder
|
|
Assay
|
Min 99%
|
|
Melting point
|
206 - 214 deg C
|
|
Substance insoluble in methanol
|
Max 0.005%
|
|
Heavy metal (as Pb)
|
Max 0.001%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Sulphated ash
|
Max 0.1%
|
|
Loss on drying (at 105°C)
|
Max 0.5%
|
|
Suitability (for determination of copper)
|
Passes test
|