Item

      index

TiO2 content,%(m/m)                                   ≥

98.5

CAS NO.

13463-67-7

Whiteness(compared with first class standard 

sample listed in GB1706-93)                               

No less than

Scattering power, %(compared with first class 

standard sample listed in GB1706-93)                        ≥                                        

105

Volatile matters at 105℃,%(m/m)                        ≤

0.5

PH value of water suspension 

6.8~8.0

Oil absorption value ,g/100g                              ≤

20

Residue on the sieve (45um mesh),%(m/m)              ≤

0.05

Electrical resistance of aqueous extract,Ωm                  ≥             

22

Water dispersible power,%                                ≥               

80

Iron content ,ppm                                         ≤     

       50

Index controlled by the company Gardner of dry power

          L                  ≥

100.2

           B

-0.60~-0.20