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  2. Bone char - Wikipedia

    en.wikipedia.org/wiki/Bone_char

    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%. [ 1 ]

  3. Bluing (steel) - Wikipedia

    en.wikipedia.org/wiki/Bluing_(steel)

    Bluing, sometimes spelled as blueing, ... bone charcoal and wood charcoal. This crucible was heated to 730 °C (1,350 °F) for up to 6 hours (the longer the heat was ...

  4. Case-hardening - Wikipedia

    en.wikipedia.org/wiki/Case-hardening

    The steel darkens significantly and shows a mottled pattern of black, blue, and purple caused by the various compounds formed from impurities in the bone and charcoal. This oxide surface works similarly to bluing, providing a degree of corrosion resistance, as well as an attractive finish.

  5. Pounce (powder) - Wikipedia

    en.wikipedia.org/wiki/Pounce_(powder)

    A pounce pot (or sprinkler) at the London Science Museum. Pounce [a] or sand [b] is a fine powder, most often made from powdered cuttlefish bone or sandarac resin, that was used both to dry ink and to sprinkle on a rough writing surface to make it smooth enough for writing.

  6. Bluing (fabric) - Wikipedia

    en.wikipedia.org/wiki/Bluing_(fabric)

    Bluing, laundry blue, dolly blue or washing blue is a household product used to improve the appearance of textiles, especially white fabrics. Used during laundering , it adds a trace of blue dye (often synthetic ultramarine , sometimes Prussian blue ) to the fabric.

  7. Whiten your teeth with this charcoal powder - AOL

    www.aol.com/whiten-teeth-charcoal-powder...

    This charcoal powder works hard to get rid of stains on your teeth.

  8. Bluing - Wikipedia

    en.wikipedia.org/wiki/Bluing

    Bluing (steel) is a passivation process in which steel is partially protected against rust Bluing may also refer to: Bluing (fabric), a blue dye used to improve the appearance of fabrics; Bluing (hair), a blue dye used to improve the appearance of hair "bluing" of machine parts to check for tolerances, see engineer's blue

  9. QB Room, Week 10: Here’s a path to fixing Cowboys and Dak ...

    www.aol.com/sports/qb-room-week-10-path...

    With Prescott out for the season, let's be realistic about the moves the Cowboys need to (and can) make. Also, Aaron Rodgers raises eyebrows within the Jets, the week's best throws, and much more.