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Formula: CdS
Chemistry %
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Volatiles %
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| DENS - Density (Specific Gravity) | 3.8-4.8 |
| MLPT - Melting Point (MP) | 900C |
It is practically insoluble in water but soluble in ammonium hydroxide and acids. The material occurs as the mineral greenockite, which is recovered as a byproduct of the refining of zinc ores. It is oxidized to the sulfate and then reprecipitated as chemically pure cadmium sulfide by hydrogen sulfide.
Cadmium sulfide is a important source of both cadmium and sulfur. They complement each other in producing yellow and red colors in enamels and glasses. Often, selenium is used in the compounds.
Since this material does not contain CdO in the raw state, the only way it can source CdO to a glass is to pick up oxygen externally. The percentage CdO shown here compensates so that the conversion factor will be correct in calculations.
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<?xml version="1.0" encoding="UTF-8"?> <material name="Cadmium Sulfide" descrip="" searchkey="Greenockite, CdS" loi="0.00" casnumber="1306-23-6"> <oxides> <oxide symbol="CdO" name="Cadmium Oxide" status="" percent="88.850" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="11.140" tolerance=""/> </volatiles> </material>
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