Specification of bulk rock salt:
Properties Test Standard Result
Size 0.15-0.85mm 85 min 93
Sodium Chloride (Nacl)% 99.1 min 99.4
Whiteness 80 min 87
Moisture(H2O)% 0.3 max 0.03
Insoluble% 0.05 max 0.004
CaSO4(%) 0.1 max 0.025
Na2SO4(%) 0.3 max 0.01
Anti Caking Agent 10 max 3.8
Heavy metals (Pb) 1.0ppm max 0.006ppm max
Calcium (Ca) 15ppm max 5ppm max
Magnesium (Mg) 1ppm max 0.7ppm max
Copper (Cu) 5ppm max 0.7ppm max
