zinc peroxide


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zinc pe·rox·ide

ZnO2; a yellowish white powder, insoluble in water and decomposed by acids; used in pharmaceutic preparations.
Synonym(s): zinc superoxide
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zinc peroxide and calcium peroxide) were swept off the substrate within three days of initiation of the rotary experiment, but the remaining coatings remained intact during the extent of the experiment (8 weeks).
The coatings formulated with slow-polishing binders, and those containing zinc peroxide, did not polish at all during the 50 days the experiment ran.
However, this tendency is most pronounced for zinc peroxide.
Whereas magnesium, calcium, and strontium peroxide ultimately give alkaline by-products (group II metals), zinc peroxide is the only pigment investigated in this paper that gives amphoteric by-products when reacting with water.
Higher levels of zinc peroxide provided slightly higher hardness values.
Higher stiffness values are possible with 7 phr of zinc peroxide addition.
Lower levels of zinc peroxide were advantageous in reducing set.
Increased zinc peroxide level provided a moderate reduction in elongation loss as well.
In the case of the EV vulcanizates, however, an increase was given by the substitution of zinc peroxide for zinc oxide.
With both EV systems, 1 and 2, however, a marked improvement was obtained when zinc peroxide was substituted for zinc oxide.
The difference is substantially eliminated and the TR values are shifted towards lower temperatures if zinc peroxide is substituted for zinc oxide.
The EV 1 and EV 2 systems modified with zinc peroxide are intermediate in this respect.