- Zinc oxide is
a chemical compound with formula ZnO. It is nearly insoluble in water
but soluble in acids or alkalis. It occurs as white hexagonal crystals
or a white powder commonly known as zinc white. It remains white when
exposed to hydrogen sulfide or ultraviolet light.
- An amorphous
white or yellowish powder, ZnO, used as a pigment, in compounding
rubber, in the manufacture of plastics, and in pharmaceuticals and
cosmetics. Also called Chinese white, zinc white.
- Zinc oxide
occurs in nature as the mineral zincite. Zincum Oxydatum is the latin
name for Zinc Oxide commonly listed on homeopathic medicines.
- ZnO has also
been considered for spintronics applications because of
theoretical predictions of room temperature
ferromagnetism.
- Recently, ZnO
has been observed to act as a chemical reagent for Friedel-Craft
Acylation Reaction.
- Zinc
oxide-recognized as a mild antimicrobial, wound healing and sunscreen
agent. Primarily absorbs UVA light rather than scattering or reflecting,
non-irritating, non-comedogenic, and micronized by forming many small
micro particles for cosmetic use.
- Zinc oxide is
produced by oxidation of metallic zinc vapor at elevated temperatures.
There are two methods. Direct method and indirect method.
- A
high-quality single-crystal zinc-oxide substrate and p-type doped
epilayer can be used to produce efficient and less expensive solid-state
lighting devices.
- Two-photon
absorption and a negative nonlinear refractive index make Zinc Oxide
(ZnO) an effective optical limiter, with potential applications for
sensor protection and laser stabilization.
- Zinc Oxide is
one of only two UVA absorbers approved for use in the US market by the
US Food & Drug Administration.
- Zinc oxide is
a naturally occurring mineral and therefore the Company believes
ZinClear-IM is ideally positioned for the natural cosmetics segment
which is currently showing growth rates of 20% per annum.
- According to
Freedonia Group, nanoscale zinc oxide was a $4 million market in 2000
and will show a CAGR of 56 per cent through 2007 to $90 million, partly
as a result of increasing demand for high SPF sunscreen formulations.
Likewise, from 2000 to 2020 a continued manufacturing shift from
traditional metal oxides to nanoscale metal oxides will occur with
nanoscale zinc oxide demonstrating an overall growth rate of 24 per cent
to an estimated $350 million by the year
2020.
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