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TRADE NAME
Realgar
MOLECULAR FORMULA
As4S4
ABOUT
Realgar, an Arsenic sulfide mineral. It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery form. Realgar burns with a bluish flame releasing fumes of Arsenic and Sulphur. Realgar has a sub-metallic luster. It is commonly held that after a long period of exposure to light realgar changes form to a yellow powder known as pararealgar (ß-As4S4). It was once thought that this powder was the yellow sulfide orpiment, but has been recently shown to be a distinct chemical compound.On long exposure to light, realgar disintegrates into a reddish-yellow powder, requiring that specimens be protected from light exposure.SHODHAN OR AYURVEDA PURIFICATION PROCESS
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