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If you don't know what pigments you're using I'd toss the stuff.
Cadmiums, cobalts--the reds, yellows are toxic--other yellows--Naples
yellow--as well, many more. Not worth it. Look in Mayer's *The
Artist's Handbook of Materials and Techniques* for a complete list of
pigments and their properties.
PS This sounds horrible, like I've set you up--I haven't, BUT if you
decide not to use them I'll take them--I've been making my own paint for
years--and I'm half-gone now anyway. ;-)