The truly wild claim to fame is this pigment's role in glow in the dark paints. May be part of luminescent, fluorescent, phosphorescent or glow in the dark formulas.
Not to be confused with Zinc Oxide, as the two are different.
Sometimes described as a softer white. Makes lithopone, when combined (co-precipitated) with barium sulfate.
We were shocked to learn that this pigment may be highly toxic-- see Monona Rossol's work for more.
We also found notes in the Artist's Handbook about a hydrogen sulfide gas that is released when heated.
While this bears zinc in the name, it is not the zinc that causes cracking. PW7 is used in lithopone-- see PW5 for information on lithopone. Golden recently included lithopone (just for clarity lithopone is not PW7 but seems to contain it) bound in safflower oil among the whites assessed in their mixing white tests.
Artiscreation mentions its use as invisible ink.
