Sometimes we see this referred to as Flemish White. Here we refer to artiscreation on this pigment. There is a bit of confusion sometimes between PW2 and PW3. At this time, we have not found any PW3 paints in oils, and PW2 is rather hard to find. In an old book on oil painting by Chruch, we find that Lead Sulfate "possesses neither the pure whiteness nor the body of white lead," and he goes on to say, "does not possess the remarkable hardening and drying powers of white lead." According to the Artist's Handbook, PW2 is not suitable for works of art due to longevity.
IMPORTANT: The proper precautions for working with lead white go beyond what we can cover here, but please be advised that the toxicity is very serious and lead can be even absorbed through the skin. Do not breathe it, do not eat it, and do not let it sit on your skin. Special decontamination is also needed. Please consult the relevant health and safety authorities. For more information on the hazards associated with lead and barium pigments, see Monona Rossol's book, The Artist's Guide to Health and Safety. Her most recent work can be found through her site.
