|
Appearance
|
Fine white or almost fine white powder
|
|
Assay (as Mg; on anhydrous basis)
|
3.8 - 5%
|
|
Loss on drying (at 105°C)
|
Max 6%
|
|
Heavy metal (as Pb)
|
Max 0.002%
|
|
Zinc stearate
|
Max 0.5%
|
|
Chloride (Cl)
|
Max 0.02%
|
|
Sulphate (SO4)
|
Max 0.3%
|
|
Acid number of precipitated fatty acid
|
195 - 210
|
|
Acidity or alkalinity
|
Max 1.0 ml N%
|