Properties Units Specification Appearnce Clear Liquid Color Colourless Density g/cm3 3g/cm1.172-1.150 Properties Units Specification Strength (HCLContent) % m/m 30.0-33.0 Free Chlorine g/l Max 0.014 Non Volatile ppm Max 500 Iron as Fe ppm Max 1.0 Sulphate as So4 ppm Max 100