Test items

Standard

Result

property

White or light white odorless powder

qualified

Discern test methods

A. Turns light yellow after heating

B. Turns orange red when mixed with H2O2

C. Turns violet blue when mixed with Zn.

qualified

Net content ratio of TiO2

99.0%-100.5%

99.1

Loss on drying

≤0.5%

0.31

Loos on ignition

≤0.5%

0.11

Water soluble substances

≤0.5%

0.23

Acid soluble substances

≤0.5%

0.26

lead

≤10ppm

1.5

arsenic

≤3ppm

0.9

antimony

≤50ppm

0.7

mercury

≤1ppm

<0.01

Zinc

≤50ppm

1.0

cadmium

≤1ppm

<0.01

Al2O3/SiO2

≤2%

<0.02

Result

Conform to E171 standard