Bone char

Bone char
Pills of bone char
Names
Other names
  • bone charcoal
  • bone black
  • ivory black
  • animal charcoal
  • abaiser
  • Pigment black 9
  • CI 77267
Identifiers
ChemSpider
  • none
ECHA InfoCard 100.029.470
EC Number
  • 232-421-2
Properties
Appearance black powder
Density 0.7 - 0.8 g/cm3
insoluble
Acidity (pKa) 8.5 - 10.0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Bone char (Latin: carbo animalis) is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; however, it consists mainly of tricalcium phosphate (or hydroxyapatite) 57–80%, calcium carbonate 6–10% and carbon 7–10%. It is primarily used for filtration and decolorisation.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.