16 C.F.R. § 1500.12
(a) The Commission finds that the following articles are hazardous substances within the meaning of the act because they are capable of causing substantial personal injury or substantial illness during or as a proximate result of any customary or reasonably foreseeable handling or use:
[38 FR 27012, Sept. 27, 1973, as amended at 68 FR 19147, Apr. 18, 2003]