HTS 2853: Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals

4 codes. Pick one to see its duty from every country of origin. From the USITC schedule, Revision 20 (2026).