presented as a dense, granular powder, in a range of colors from sandy brown to black/grey depending on the other elements present (provided for in subheading 2611.00.60) Free No change No change On or before 12/31/2024 . 4112. Piperylene Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.19.12 Distillates (petroleum), C3-6, piperylene-rich (CAS No. 68477–35–0) (provided for in subheading 2710.12.90) 3.7% No change No change On or before 12/31/2024 . 4113. Normal paraffin M (alkanes C10–C14) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.19.13 A mixture of normal paraffin medium oils (alkanes, C10–14) (CAS No. 93924–07–3) (provided for in subheading 2710.19.90) 5.8% No change No change On or before 12/31/2024 . 4114. Neodymium (Nd) metal Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.19.14 Neodymium metal (CAS No. 7440–00–8), whether or not intermixed or interalloyed (provided for in subheading 2805.30.00) Free No change No change On or before 12/31/2024 . 4115. Praseodymium (Pr) metal Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.19.15 Praseodymium metal (CAS No. 7440–10–0), whether or not intermixed or interalloyed (provided for in subheading 2805.30.00) Free No change No change On or before 12/31/2024 . 4116. Heavy rare earth metals, dysprosium (Dy) metal and terbium (Tb) metal Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.19.16 Dysprosium metal (CAS No. 7429–91–6), terbium metal (CAS No. 7440–27–9), and heavy rare earth metals, whether or not intermixed or inter-alloyed (provided for in subheading 2805.30.00) Free No change No change On or before 12/31/2024 . 4117. Scandium crystal Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.19.17 Scandium crystals of 99.9