The merchandise covered by this investigation is pentafluoroethane (“R- 125″), or its chemical equivalent, regardless of form, type or purity level. R-125 has the Chemical Abstracts Service (,’CAS”) registry number of 354-33-6 and the chemical formula C2HF5. R-125 is also referred to as Pentafluoroethane, Genetron HFC 125, Khladon 125, Suva 125, Freon 125, and Fc-125. Subject merchandise includes R-125, whether or not incorporated into a blend. Subject merchandise also includes R-125 and unpurified R-125 that is processed in a third country or otherwise outside the customs territory of the United States., including, but not limited to, purifying or any other processing that would not otherwise remove the merchandise from the scope of this investigation if performed in the country of manufacture of the in-scope R-125.Excluded from the current scope is merchandise covered by the scope of the antidumping order on Hydrofluorocarbon Blends from the People’s Republic of China. See Hydrofluorocarbon Blends from the People’s Republic of China, 81 Fed. Reg. 55436 (Aug. 19, 2016) (the “Blends Order”).R-125 is classified under Harmonized Tariff Schedule of the United States (HTSUS) subheading 2903.39.2035. Other merchandise subject to the current scope, including the abovementioned blends that are outside the scope of the Blends Order, may be classified under 2903.39.2045 and 3824.78.0020. The HTSUS subheadings and CAS registry number are provided for convenience and customs purposes. The written description of the scope of the petition is dispositive.