Coverage includes (for example) a method for the chemical analysis of wood charcoal; a specification for the use of acid copper chromate
in the preservative treatment of wood products; and a practice for establishing allowable properties for structural glued laminated timber (Glulam).
Industry groups had petitioned the EPA three years ago to use acid copper chromate
(ACC), which contains the carcinogen hexavalent chromium to treat wood sold in hardware and home improvement stores.
Other black pigments include copper chromate
spinel, iron titanium spinel, and synthetic iron oxide--none of which had sales of more than one million pounds.