7 Pa. Code § 73.4
(a) A warning statement is required on the label for a product which contains .03% or more of boron in a water-soluble form. The statement shall contain the following:
(b) Products containing .001% or more of molybdenum require a warning statement on the label. The statement shall contain the following:
The provisions of this § 73.4 adopted July 28, 1972, effective July 29, 1972, 2 Pa.B. 1435.