Pub. L. 100-418, tit. I, subtit. G, pt. 1, subpt. B, sec. 1753
3-AMINO–3-METHYL–1-BUTYNE.
SEC. 1753. 3-AMINO–3-METHYL–1-BUTYNE. Subpart B of part 1 of the Appendix is amended by inserting in numerical sequence the following new item: “ 907.53 3-Amino-3-methyl-1-butyne (provided for in item 425.52, part 2D, schedule 4) Free No change On or before 12/31/90 ”,