chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.52 Adamantan-1-amine hydrochloride having a purity of at least 99 percent (CAS No. 665–66–7) (provided for in subheading 2921.30.50) Free No change No change On or before 12/31/2025 . 11149. N,N-Dimethylaniline Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.53 N,N-Dimethylaniline (CAS No. 121–69–7) (provided for in subheading 2921.42.10) Free No change No change On or before 12/31/2025 . 11150. Paranitroaniline (PNA) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.54 p-Nitroaniline (CAS No. 100–01–6) (provided for in subheading 2921.42.90) Free No change No change On or before 12/31/2025 . 11151. Dicloran Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.55 2,6-Dichloro-4-nitroaniline (Dicloran) (CAS No. 99–30–9) (provided for in subheading 2921.42.90) Free No change No change On or before 12/31/2025 . 11152. N,N-Dimethyl-p-toluidine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.56 N,N-Dimethyl-p-toluidine (CAS No. 99–97–8) (provided for in subheading 2921.43.08) Free No change No change On or before 12/31/2025 . 11153. Pendimethalin technical Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.57 3,4-Dimethyl-2,6-dinitro-N-pentan-3-ylaniline (Pendimethalin) (CAS No. 40487–42–1) (provided for in subheading 2921.49.50) Free No change No change On or before 12/31/2025 . 11154. Benzyldimethylamine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.58 N,N-Dimethyl-1-phenylmethanamine (CAS No. 103–83–3) (provided for in subheading 2921.49.50) Free No change No change On or before 12/31/2025 . 11155. Diphenyl diphenylene diamine Subchapter II of chapter 99 is amended by