Bismuth oxychloride

  • Bismutylchlorid
  • Bismuth oxychloride
  • Basic bismuth chloride
  • Pigment White 14

Odorless white solid

Fixed

7.72 g · cm -3

Insoluble in water, slightly soluble in acids

Attention

-366.9 KJ / mol

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Bismutchloridoxid is a chemical compound of bismuth, oxygen and chlorine, which is employed in the cosmetics industry.

Production and representation

When instilling a solution prepared with water containing hydrochloric acid solution of bismuth ( III ) chloride in water is much Bismutchloridoxid (basic bismuth chloride ) separates in shining scales or as a dazzling white powder.

Also possible is the preparation by reaction of bismuth (III ) chloride, cadmium (II ) oxide at 400 ° C.

Properties

Bismutchloridoxid is a colorless crystalline powder, which is only very slightly soluble in water and has a tetragonal crystal structure. In addition to the anhydrate, but there is also a hydrate BiOCl · H2O. About the water content of the hydrolysis of bismuth (III ) chloride available preparations are conflicting literature, but they can be dehydrated by heating to > 260 ° C to BiOCl.

Use

Bismutchloridoxid was formerly used in medicine and as a make-up used ( bismuth white, pearl white, make-up powder, Blanc d' Espagne ). It is still used as a dye in lipsticks, mascara and similar cosmetic products and is used as a material for pearlescent effects. Also in combination with prednisolone acetate is found in ointments or suppositories for hemorrhoids use.

CAS registry number Dangerous Substances Directive (67/548/EEC) Base (chemistry) Cadmium oxide CRC Handbook of Chemistry and Physics Integrated Authority File
126096
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