[BGSpam][PPLetterpress] Re: buying old type - lead oxide issues
I thought John had responded well. The reference I have (and cited)
indicates that litharge (mentioned by you) is a lead monooxide. My
reference also sites the Greek psimithium as white lead. There are
various types of white lead and various types of manufacture; the
colors are created as a result of different types of processing, but
it is all still categorized as white lead. Yes, there were all kinds
of additives for various kinds of applications. My reference has
chemical formulas for lead acetate, lead carbonate, lead dioxide, lead
nitrate, lead oxide (and red oxide of lead), lead sulphate. . .
-- In PPLetterpress@yahoogroups.com, "mike.jacobs" <mike918print@...>
>lead acetate adulterated with lead carbonate.
> Joseph Mattiello was obviously not a chemist since psimithium was
> White lead is indeed lead carbonate which is not an oxide.
> Mike ( in England)
> "It's a great day for the race!"
> [Non-text portions of this message have been removed]