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Topic ClosedAlcohol strength

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JapanCollodion View Drop Down

Joined: 19 April 2006
Location: Japan
Online Status: Offline
Posts: 50
Direct Link To This Post Topic: Alcohol strength
    Posted: 16 May 2007 at 07:55
Dear Collodion Colleagues,

My chemical supplier is offering me Ethyl alcohol at 99.5 percent
I've been using 95 percent strength up until now with fine results.
Does anyone foresee any changes in quality or potential problems, by
using the 99.5 percent alcohol?
(I have thought of using it primarily for getting colodion chemicals into
liquid form, where the miminum of water is best.)
Can anyone share any wisdom on this?

Also, anyone know where to buy a head brace for helping sitters be still
during portraits?

Thanks in advance,

Japan collodion
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TysTins View Drop Down

Joined: 31 March 2007
Online Status: Offline
Posts: 361
Direct Link To This Post Posted: 16 May 2007 at 08:34
I believe that you will need to bring the % down to 95.  A certain amount of water is needed (yet, not too much) to allow a permeability to the collodion.  I think Sean M. had a post on this forum about this.
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