yellow ivories

Joe & Penny Goss imatunr@srvinet.com
Sun, 6 May 2001 12:44:49 -0600


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Yeh They work real good in a few months <G>
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
  ----- Original Message -----=20
  From: Kevin E. Ramsey=20
  To: pianotech@ptg.org=20
  Sent: Sunday, May 06, 2001 12:22 PM
  Subject: Re: yellow ivories


      I just had an idea,,,,,,,,,,What about those tooth =
whitening-bleaching gels that you can get at any drug store?


  Kevin E. Ramsey
  ramsey@extremezone.com=20
    ----- Original Message -----=20
    From: Billbrpt@AOL.COM=20
    To: pianotech@ptg.org=20
    Sent: Saturday, May 05, 2001 9:20 PM
    Subject: Re: yellow ivories


    In a message dated 5/5/01 10:52:18 PM Central Daylight Time,=20
    diskladame@provide.net (Z! Reinhardt) writes:=20



      The 40% solution can be found at beauty supply shops.=20


    Sorry, that is a common misconception.  "40 Volume" is not the same =
as 40%.  =20
    I honestly forget what the meaning of "volume" is for these =
products, it's=20
    been a long time since I did that kind of work but I remember being=20
    misinformed in the same way back then.  If you were to put a =
solution of=20
    something on your hair that is really 40% Hydrogen Peroxide (H2O2), =
it would=20
    chemically "cook" it to the point of destruction and your scalp =
would be=20
    burned severely as well.=20

    In a nutshell, the worst of the discoloration of ivory is in the =
oxidized=20
    surface.  Often a simple cleaning, sometimes with a mild abrasive =
followed by=20
    buffing will renew their color sufficiently.  If the cleaning with a =
mild=20
    abrasive isn't enough, using the 35% H2O2 solution in repeated =
applications=20
    under either natural or artificial ultraviolet light will lighten =
their color.=20

    You have to specially ask for this chemical because it is very =
strong and=20
    potentially dangerous.  Whatever the beauty supply house has, even =
its=20
    strongest is nowhere near this strong, I'm guessing 10 or 12%.  It =
is the=20
    same solution as the 3% H2O2 that you may have in your medicine =
cabinet, just=20
    more than 10 times as concentrated.  H20 is water as you know it.  =
In H202,=20
    the extra Oxygen molecules are a classic example of the often talked =
about=20
    "free radical".  The H2O2 molecule wants to rid itself of that extra =
oxygen=20
    molecule, so it will give it off to nearly anything.=20

    It is a very unstable compound that wants to stabilize itself into =
just plain=20
    H20.  That extra Oxygen molecule will *oxidize* anything it can.  =
When the=20
    concentration of H2O2 is very high in a solution, it becomes a very =
powerful=20
    corrosive or catalyst.  Yet, it really does take this much chemical =
strength,=20
    plus dangerous and harsh ultraviolet light in *repeated* =
applications to=20
    really have a significant bleaching effect on ivory.=20

    Consider this when weighing the factors about how much this should =
cost and=20
    which precautions should be taken.=20

    Bill Bremmer RPT=20
    Madison, Wisconsin=20

    Bill Bremmer RPT=20
    Madison, Wisconsin=20

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