View source for Antimony trioxide

{{Chembox
| Name = Antimony Trioxide
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| IUPACName = Antimony(III) oxide
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| SystematicName = 
| OtherNames = {{Unbulleted list
  | ''Antimony sesquioxide''
  | ''Antimonous oxide''
  ...
  | ''name50''
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| Section1 = {{Chembox Identifiers
| 3DMet = 
| Abbreviations = 
| SMILES = O=[Sb]O[Sb]=O
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| Section2 = {{Chembox Properties
| AtmosphericOHRateConstant = 
| Appearance = White powder
| BoilingPt = 1425
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| Density = 5.2 g/cm³ α-form, 5.67 g/cm³ β-form
| Formula = Sb2O3
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| MeltingPt = 656
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| Solubility = 370 ± 37 µg/L
| SolubleOther = Soluble in acids and bases
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| Section3 = {{Chembox Structure
| Coordination = Pyramidal
| CrystalStruct = cubic (α)<570 °C, orthorhombic (β) >570 °C
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| LD50 = 7000 mg/kg, oral (rat)
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| MainHazards = Carcinogenic
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| Section7 = {{Chembox Related
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Antimony trioxide is an oxide of [[antimony]]. It is used as a flame retardant in combination with halogenated materials, an opacifying agent in [[glass]] and ceramic production, in some special pigment, and as a [[catalyst]].

==Properties==
===Chemical===
Antimony(III) oxide is an [[amphoteric]] [[oxide]] of antimony. It dissolves in acids to form the corresponding acid salts and in sodium hydroxide to form [[sodium meta-antimonite]] (NaSbO2).

Sb2O3 + 6 HCl → 2 SbCl3 + 3 H2O

With carbon, antimony trioxide forms elemental antimony.

2 Sb2O3 + 3 C → 3 CO2 + 4 Sb

===Physical===
Antimony trioxide is an odorless, white solid.

==Availability==
To do

==Preparation==
Antimony trioxide can be prepared by reaction of antimony metal with oxygen at high temperatures. This is best done in a furnace. The product will sublime during the process of making it.

==Projects==
*Pigment
*Glass and ceramic production
*Catalyst for polyethylene terephthalate production

==Handling==

===Safety===
Antimony(III) oxide is a suspected carcinogen. It should be handled with care, especially at high temperatures where it tends to sublime.
===Storage===
Can be stored in any container. Should be stored away from acid and base vapors.
===Disposal===
To do
==References==
<references/>
===Relevant Sciencemadness threads===