item of indexes	index
calcium carbonate (based on dry material) ％ ≥	98.0
moisture ％ ≤	0.50
sieve residue ％ ≤	0.005
insoluble substance in hydrochloric acid ％ ≤	0.20
iron (calculated in Fe) ％ ≤	0.10
manganese（calculated in Mn）％ ≤	0.006
PH value	8.0—10.0
rate of activation ％ ≥	96
whiteness ℃ ≥	95
value of oil absorbing ml/100g	85—110
average granule diameter DP um ≤	1.0

specification of package：25kg/bag 50kg/bag

HS CODE :2836500

used :

1: Plastic industry : pvc sire , Rubber cloth , model products , thin coat , self -solution plastic , master plastic -granular , plastic paper

2: coating industry : synthetic resin paint , oil paint , latex paint , powder paint

3: plastic -rubber industry : electric wire , cable , sponge , gum paste , sole , soft pipe

4: paper-making : filler , pulp filling

5: other industry : pigment , tooth paste .