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Antimony oxychloride
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Antimony oxychloride

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Antimony oxychloride
Antimony oxychloride solid.JPG
Names
IUPAC name
antimony oxide chloride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.308
EC Number
  • 232-238-8
  • Sb4O5Cl2: 235-347-9
PubChem CID
UNII
  • InChI=1S/ClH.O.Sb/h1H;;/q;-2;+3/p-1
    Key: LIRSFCJKZQBJRK-UHFFFAOYSA-M
  • Sb4O5Cl2: InChI=1S/2ClH.5O.4Sb/h2*1H;;;;;;;;;/q;;5*-2;4*+3/p-2
    Key: QXGIXMVRTVXTKM-UHFFFAOYSA-L
  • [O-2].[Cl-].[Sb+3]
  • Sb4O5Cl2: [O-2].[O-2].[O-2].[O-2].[O-2].[Cl-].[Cl-].[Sb+3].[Sb+3].[Sb+3].[Sb+3]
Properties
SbOCl
Molar mass 173.21 g/mol
Melting point 280 °C (536 °F; 553 K)
insoluble
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Antimony oxychloride, known since the 15th century, has been known by a plethora of alchemical names. Since the compound functions as both an emetic and a laxative, it was originally used as a purgative.

History

Its production was first described by Basil Valentine in Currus Triumphalis Antimonii. In 1659, Johann Rudolf Glauber gave a relatively exact chemical interpretation of the reaction.

Vittorio Algarotti introduced the substance into medicine, and derivatives of his name (algarot, algoroth) were associated with this compound for many years.

The exact composition was unknown for a very long time. The suggestion of SbOCl being a mixture of antimony trichloride and antimony oxide or pure SbOCl were raised. Today the hydrolysis of antimony trichloride is understood; first the SbOCl oxychloride is formed which later forms Sb4O5Cl2.

Natural occurrence

Neither SbOCl nor the latter compound occur naturally. However, onoratoite is a known Sb-O-Cl mineral, its composition being Sb8Cl2O11.

Alternative historical names

  • mercurius vitæ ("mercury of life")
  • powder of algaroth
  • algarel
  • Pulvis angelicus.

Synthesis

Dissolving antimony trichloride in water yields antimony oxychloride:

SbCl3 + H2O → SbOCl + 2 HCl

Further reading


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