Volatile matter (at 100 °C.), not more than 0.5 percent.
Water-soluble matter, not more than 0.3 percent.
Matter insoluble in carbon tetrachloride, not more than 0.5 percent.
Uncombined intermediates, not more than 0.05 percent.
Subsidiary dyes, not more than 2.0 percent.
Lead (as Pb), not more than 10 parts per million.
Arsenic (as As), not more than 1 part per million.
Total color, not less than 98 percent.
21 C.F.R. §74.302