CFR › Title 40 › Part 63 › §63.6440 CFR §63.64Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)The substance 1-bromopropane, or 1-BP, also known as n-propyl bromide or nPB (CAS No. 106-94-5) is added to the list of hazardous air pollutants established by Clean Air Act (CAA) section 112(b)(1), 42 U.S.C. 7412(b)(1).(b)[Reserved]