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ANTIMONY METAL.:  a silvery-white element belonging to Group VA of the periodic table, atomic number 51, atomic weight 121.76, density 6.73, melting point 630 degrees centigrade, boiling point 1380 degrees centigrade.


ANTIMONY OXIDE:  “Antmony Oxides", are antimony trioxides, (Sb2 03), and are fine white odorless powders. Antimony trioxide has two crystalline forms, either senarmontite which is cubic, or valentinite which is orthorhombic. Antimony trioxide (Sb203) has a molecular weight of 291.52,­ a melting point of 656° C, a boiling point of 1,425° C, and a refractive index of 2.087. Montana Brand antimony oxides are formed exclusively by the sublimation of antimony metal under extremely rigid furnace conditions. The physical and chemical properties are remarkably consistent due to a comprehensive quality control program. Sb203 is practically insoluble in water (approximately 0.001 grams/100ml of H20 at 25° C.) It is soluble in HCI to form antimony tri-chloride, SbCI3 ; in HN03 to form SbON03 ; in H2S04 to form (SbOhS04 ; in NaOH to form NaSb03 ; and in KOH to form KSb03 .



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