28500005

HS code 2850.00.05.00 (Chapter 28 "Inorganic chemicals"; Heading 2850 "Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849"; Subheading 285000 "Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49") under the United States tariff schedule classifies "Of calcium". United States customs apply MFN rate of Free, Column 2 rate 25%. Statutory unit of measure: kg. 18 free trade agreement preferential rates are available for this code.