Appearance
|
Black powder
|
Substance soluble in water
|
Max 1.0%
|
Substance soluble in HCl
|
Max 3.0%
|
Chloride (Cl)
|
Max 0.2%
|
Sulphate (SO4)
|
Max 0.2%
|
Iron (Fe)
|
Max 0.1%
|
Heavy metal (as Pb)
|
Max 0.005%
|
Sulphated ash (at 800°C)
|
Max 5.0%
|
Loss on drying (at 120°C)
|
Max 10.0%
|
pH Value
|
6.5 - 7.5
|
Incomplete carbonization
|
Passes test
|
Methylene blue value
|
Min 180
|