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Antimony(III) oxide is the inorganic compound with the formula Sb 2 O 3. It is the most important commercial compound of antimony . It is found in nature as the minerals valentinite and senarmontite. [ 3 ]
Antimony is a chemical element; it has symbol Sb (from Latin stibium) and atomic number 51. A lustrous grey metal or metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb 2 S 3). Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. [11]
Antimony oxide may refer to any of the following: Diantimony tetroxide, Sb 2 O 4; Antimony trioxide, Sb 2 O 3; Antimony pentoxide, Sb 2 O 5; Antimony ...
Valentinite is an antimony oxide mineral with formula Sb 2 O 3. Valentinite crystallizes in the orthorhombic system and typically forms as radiating clusters of euhedral crystals or as fibrous masses. It is colorless to white with occasional shades or tints of yellow and red. It has a Mohs hardness of 2.5 to 3 and a specific gravity of 5.76. [5]
The hydrated oxide is insoluble in nitric acid, but dissolves in a concentrated potassium hydroxide solution to give potassium hexahydroxoantimonate(V), or KSb(OH) 6. [6] When heated to 700 °C (1,290 °F), the yellow hydrated pentoxide converts to an anhydrous white solid with the formula Sb 6 O 13, containing both antimony(III) and antimony(V).
China is also the biggest producer of processed antimony, including antimony trioxide (ATO), which is traditionally used in flame retardants and increasingly as a clarifying agent in solar glass.
Antimony potassium tartrate, also known as potassium antimonyl tartrate, potassium antimontarterate, or tartar emetic, [3] has the formula K 2 Sb 2 (C 4 H 2 O 6) 2. The compound has long been known as a powerful emetic, and was used in the treatment of schistosomiasis and leishmaniasis. It is used as a resolving agent. It typically is obtained ...
China is a major producer of antimony, and some U.S. policymakers have worried about being overly dependent on China as a source. The mineral's uses include flame retardants, batteries, night ...