Re: [ATM] Protect a finished optical surface to work on reverse

[Larry Arnold <larryarnold@cox.net>]

The container doesn't say what's in it. Just says, "Flammable  
mixture. Contents under pressure. Do not puncture, keep at room  
temperature, away from direct sunlight, stoves and other heat  
sources. Do not store above 120 degrees F. Exposure to high temps may  
cause bursting." The label isn't very informative otherwise.

Larry


On Mar 12, 2007, at 12:37 PM, Vladimir Galogaza wrote:

> Hi Arnold,
>
> (It is spelled collodiOn.)
>
> In order to obtain quick drying by evaporation of solvent, ether  
> was used
> for solvent.
> This is probably main reason why it is considered as hazardous.
> Highly flammable ether in combination with  combustible
> nitrocellulose may warrant heavy  burns if spilled and glued to  
> skin and
> caught fire.
> Although it was used for cleaning optics, I will avoid it. There are
> other, les hazardous and still efficient  methods.
>
>> There is a product made for this purpose, called "Pre-cote 33 Blue
>> Spray" protective coating, part #LB0004 sold by Universal Photonic
>
> Have you seen declaration for this product. What does it contains?
>
> Regards
> Vladimir.
>
>
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