Although barium sulfate is almost completely inert, zinc sulfide degrades upon exposure to UV light, leading to darkening of the pigment. The severity of this UV reaction is dependent on a combination of two factors; how much zinc sulfide makes up the pigments formulation, and its total accumulated UV exposure. Depending on these factors Lithopone B301, Lithopone B311 powder itself may vary in shade over time, ranging from pure white all the way to grey or even black. To suppress this effect, a dopant might be used, like small amount of cobalt salts, which would be added to the formulation. This process creates cobalt-doped zinc sulfide. The cobalt salts help to stabilize zinc sulfide so it will not have as severe a reaction to UV exposure.

Fig. 4. Hemolysis (%) values of samples, A: 0.2 mg/mL P25TiO₂NPs; B: 0.02 mg/mL P25TiO₂NPs; C: 0.2 mg/mL VitaminB2@P25TiO₂NPs; D: 0.02 mg/mL VitaminB2@P25TiO₂NPs after 3 h of irradiation (red) and 6 h (blue). SD <5 for all samples and p <0.05 between C-D and A-B.

Used for paint, ink, rubber, polyolefin, vinyl resin, ABS resin, polystyrene, polycarbonate, paper, cloth, leather,enamel, etc. Used as a binder in buld production.
Package and Storage:
25KGs /5OKGS Woven bag with inner, or 1000kg big woven plastic bag.
The product is a kind of white powder which is safe , nontoxic and harmless.Keep from moisture duringtransport and should be stored in a cool, dry condition.Avoid breathing dust when handling, and wash withsoap & water in case of skin contact.For more details.

Lithopone in natural and synthetic elastomers 

Titanium dioxide manufacturer: Panzhihua Dongfang

What’s recently changed with titanium dioxide and regulations?

Safety[edit]