Polyethylene glycol-40 castor oil (PEG-40 castor oil).
Saponification No., 60 to 70.
Hydroxyl No., 63 to 78.
Acid No., 2.
Specific gravity, 1.05 to 1.07.
Melting point, 30.5 °C to 31.5 °C.
Lead (as Pb), not more than 20 parts per million.
Arsenic (as As), not more than 3 parts per million.
Mercury (as Hg), not more than 1 part per million.
Total color, not less than 99 percent.
21 C.F.R. §73.2180