zinc carbonate


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zinc carbonate

ZnCO3, a mild astringent used topically in dusting powders.
See also: zinc
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References in periodicals archive ?
In the ATR spectra of zinc carbonate, the very strong bands occurred at about 1400 [cm.sup.-1], whereas for hydrozincite, two bands are observed (at about 1500 and 1390[cm.sup.-1]).
All of the reflection peaks can be indexed to hydroxide zinc carbonate (HZC),[Zn.sub.5][(OH).sub.6][(C[O.sub.3]).sub.2] (in Joint Committee on Powder Diffraction Standards, JCPDS card no.
At the world-scale plant in Uerdingen, the raw materials are elaborately purified, isolated as zinc carbonate in a wet chemical process and then heated in special annealing furnaces to produce the final products.
This producer of zinc chemicals, including active zinc oxide, zinc carbonate, zinc ammonium chloride and zinc sulfate, has its own rubber compound laboratory with rheometer, tensile strength meter roller mills, etc., for quality control of its zinc oxide.
Prior to digestion the material was impregnated with a solution made up with 26.7 g sodium sulphite per litre of water with or without a second agent such as sodium carbonate, sodium bicarbonate, magnesium carbonate, lithium carbonate and zinc carbonate. The concentration of the second agent was 3.3 g/1 of water.
The zinc, which would be derived from a combination of zinc silicate and zinc carbonate minerals as opposed to the more common zinc sulphide, could also be very pure judging from results from the pilot project run in Johannesburg.
In 1817 a German chemist, Friedrich Strohmeyer (1776-1835), analyzed a bottle in an apothecary's shop that contained zinc carbonate. He found that it turned yellow on strong heating, which it shouldn't have done.