Pub. L. 101-382, tit. III, subtit. A, pt. 1, sec. 349
2,4-DIAMINOBENZENESULFONIC ACID.
SEC. 349. 2,4-DIAMINOBENZENESULFONIC ACID. Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: “ 9902.30.43 2,4- Diaminobenzenesulfonic acid (CAS No. 88–63–1) (provided for in subheading 2921.51.50) Free No change No change On or before 12/81/92 ”