USMCA.COM
Chapter 28 HTS Revision 18 (2026)

Tariff Schedule

Chapter 28: Inorganic chemicals; compounds of precious metals and rare-earth metals

194 provisions in this chapter where a USMCA claim changes the duty.

HTSDescription GeneralUSMCASection 338
2801.30.10.00 Fluorine, chlorine, bromine and iodine: Fluorine 3.7% Free
2801.30.20.00 Fluorine, chlorine, bromine and iodine: Bromine 5.5% Free
2804.10.00.00 Hydrogen, rare gases and other nonmetals: Hydrogen 3.7% Free
2804.21.00.00 Hydrogen, rare gases and other nonmetals: Argon 3.7% Free
2804.29.00 Hydrogen, rare gases and other nonmetals: Other 3.7% Free
2804.30.00.00 Hydrogen, rare gases and other nonmetals: Nitrogen 3.7% Free
2804.40.00.00 Hydrogen, rare gases and other nonmetals: Oxygen 3.7% Free
2804.69.10.00 Hydrogen, rare gases and other nonmetals: Containing by weight less than 99.99 percent but not less than 99 percent of silicon 5.3% Free
2804.69.50.00 Hydrogen, rare gases and other nonmetals: Other 5.5% Free
2805.11.00.00 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:… 5.3% Free
2805.12.00.00 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:… 3% Free
2805.19.10.00 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:… 3.7% Free
2805.19.90 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:… 5.5% Free
2805.30.00 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:… 5% Free
2805.40.00.00 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:… 1.7% Free
2806.20.00.00 Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid: Chlorosulfuric acid 4.2% Free
2810.00.00.00 Oxides of boron; boric acids 1.5% Free
2811.12.00.00 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Hydrogen cyanide (hydrocyanic acid) 4.2% Free
2811.19.10.00 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Arsenic acid 2.3% Free
2811.19.61 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Other 4.2% Free
2811.21.00.00 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Carbon dioxide 3.7% Free
2811.22.10.00 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Synthetic silica gel 3.7% Free
2811.29.30.00 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Sulfur dioxide 4.2% Free
2811.29.50.00 Other inorganic acids and other inorganic oxygen compounds of nonmetals: Other 3.7% Free
2812.11.00.00 Halides and halide oxides of nonmetals: Carbonyl dichloride (phosgene) 3.7% Free
2812.12.00.00 Halides and halide oxides of nonmetals: Phosphorous oxychloride 3.7% Free
2812.13.00.00 Halides and halide oxides of nonmetals: Phosphorous trichloride 3.7% Free
2812.15.00.00 Halides and halide oxides of nonmetals: Sulfur monochloride 3.7% Free
2812.16.00.00 Halides and halide oxides of nonmetals: Sulfur dichloride 3.7% Free
2812.17.00.00 Halides and halide oxides of nonmetals: Thionyl chloride 3.7% Free
2812.19.00 Halides and halide oxides of nonmetals: Other 3.7% Free
2812.90.00 Halides and halide oxides of nonmetals: Other 3.7% Free
2813.10.00.00 Sulfides of nonmetals; commercial phosphorus trisulfide: Carbon disulfide 3.7% Free
2813.90.50.00 Sulfides of nonmetals; commercial phosphorus trisulfide: Other 3.7% Free
2815.30.00.00 Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium: Peroxides of sodium or… 3.7% Free
2816.10.00.00 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium: Hydroxide and peroxide of magnesium 3.1% Free
2816.40.10.00 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium: Of strontium 4.2% Free
2816.40.20.00 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium: Of barium 2% Free
2818.10.20 Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: In grains, or ground, pulverized or… 1.3% Free
2819.10.00.00 Chromium oxides and hydroxides: Chromium trioxide 3.7% Free
2819.90.00.00 Chromium oxides and hydroxides: Other 3.7% Free
2820.10.00.00 Manganese oxides: Manganese dioxide 4.7% Free
2820.90.00.00 Manganese oxides: Other 4.7% Free
2821.10.00 Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3: Iron… 3.7% Free
2821.20.00.00 Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3: Earth colors 5.5% Free
2822.00.00 Cobalt oxides and hydroxides; commercial cobalt oxides 0.1% Free
2823.00.00.00 Titanium oxides 5.5% Free
2824.10.00.00 Lead oxides; red lead and orange lead: Lead monoxide (litharge, massicot) 3% Free
2824.90.10.00 Lead oxides; red lead and orange lead: Lead suboxide (leady litharge) 5.5% Free
2824.90.20.00 Lead oxides; red lead and orange lead: Red lead and orange lead 3.4% Free
2824.90.50.00 Lead oxides; red lead and orange lead: Other 4.8% Free
2825.10.00.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.7% Free
2825.20.00.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.7% Free
2825.30.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 5.5% Free
2825.50.10.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 4.3% Free
2825.50.20.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 5% Free
2825.50.30.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.9% Free
2825.60.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.7% Free
2825.70.00.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.2% Free
2825.90.10.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.7% Free
2825.90.15.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 3.7% Free
2825.90.20.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides: Tin… 4.2% Free
2825.90.30.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:… 5.5% Free
2825.90.90.00 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides: Other 3.7% Free
2826.19.10.00 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: Of ammonium 3.1% Free
2826.19.20.00 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: Of sodium 3.7% Free
2826.19.90.00 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: Other 3.9% Free
2826.90.10.00 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: Fluorosilicates of sodium or of potassium 4.1% Free
2826.90.90 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: Other 3.1% Free
2827.10.00.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Ammonium chloride 2.9% Free
2827.31.00.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of magnesium 1.5% Free
2827.35.00.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of nickel 3.7% Free
2827.39.10.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of vanadium 5.5% Free
2827.39.25.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of tin 4.2% Free
2827.39.30.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of titanium 4.9% Free
2827.39.40.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of tungsten 5.5% Free
2827.39.45.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of barium 4.2% Free
2827.39.55.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of iron 3.7% Free
2827.39.60.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of cobalt 4.2% Free
2827.39.65.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of zinc 1.6% Free
2827.39.90 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Other 3.7% Free
2827.41.00.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of copper 3.9% Free
2827.49.10.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of vanadium 5.5% Free
2827.49.50.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Other 5.5% Free
2827.59.51.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Other 3.6% Free
2827.60.20.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Of potassium 2.8% Free
2827.60.51.00 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides: Other 4.2% Free
2828.10.00.00 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites: Commercial calcium hypochlorite and other calcium… 2.4% Free
2828.90.00.00 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites: Other 3.7% Free
2829.19.01.00 Chlorates and perchlorates; bromates and perbromates; iodates and periodates: Other 3.3% Free
2829.90.40.00 Chlorates and perchlorates; bromates and perbromates; iodates and periodates: Of potassium 3.1% Free
2829.90.61.00 Chlorates and perchlorates; bromates and perbromates; iodates and periodates: Other 3.7% Free
2830.10.00.00 Sulfides; polysulfides, whether or not chemically defined: Sodium sulfides 3.7% Free
2830.90.15.00 Sulfides; polysulfides, whether or not chemically defined: Other zinc sulfide 2.8% Free
2830.90.20.00 Sulfides; polysulfides, whether or not chemically defined: Cadmium sulfide 3.1% Free
2830.90.90.00 Sulfides; polysulfides, whether or not chemically defined: Other 3% Free
2831.10.50.00 Dithionites and sulfoxylates: Other 5.5% Free
2831.90.00.00 Dithionites and sulfoxylates: Other 5.5% Free
2832.10.00.00 Sulfites; thiosulfates: Sodium sulfites 1.5% Free
2832.20.00.00 Sulfites; thiosulfates: Other sulfites 3.1% Free
2832.30.10.00 Sulfites; thiosulfates: Sodium thiosulfate 1.5% Free
2832.30.50.00 Sulfites; thiosulfates: Other 3.1% Free
2833.11.50 Sulfates; alums; peroxosulfates (persulfates): Other 0.4% Free
2833.21.00.00 Sulfates; alums; peroxosulfates (persulfates): Of magnesium 3.7% Free
2833.24.00.00 Sulfates; alums; peroxosulfates (persulfates): Of nickel 3.2% Free
2833.25.00.00 Sulfates; alums; peroxosulfates (persulfates): Of copper 1.4% Free
2833.27.00.00 Sulfates; alums; peroxosulfates (persulfates): Of barium 0.6% Free
2833.29.10.00 Sulfates; alums; peroxosulfates (persulfates): Of cobalt 1.4% Free
2833.29.30.00 Sulfates; alums; peroxosulfates (persulfates): Of vanadium 5.5% Free
2833.29.40.00 Sulfates; alums; peroxosulfates (persulfates): Of chromium 3.7% Free
2833.29.45.00 Sulfates; alums; peroxosulfates (persulfates): Of zinc 1.6% Free
2833.29.51 Sulfates; alums; peroxosulfates (persulfates): Other 3.7% Free
2833.30.00.00 Sulfates; alums; peroxosulfates (persulfates): Alums 1.6% Free
2833.40.20.00 Sulfates; alums; peroxosulfates (persulfates): Of sodium 3.7% Free
2833.40.60 Sulfates; alums; peroxosulfates (persulfates): Other 3.1% Free
2834.10.10.00 Nitrites; nitrates: Of sodium 5.5% Free
2834.10.50.00 Nitrites; nitrates: Other 3.1% Free
2834.29.05.00 Nitrites; nitrates: Of bismuth 5.5% Free
2834.29.20.00 Nitrites; nitrates: Of strontium 4.2% Free
2834.29.51.00 Nitrites; nitrates: Other 3.5% Free
2835.10.00.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:… 3.1% Free
2835.22.00.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Of… 1.4% Free
2835.24.00.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Of… 3.1% Free
2835.29.20.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Of… 1.5% Free
2835.29.30.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Of… 2.2% Free
2835.29.51.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Other 4.1% Free
2835.31.00.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:… 1.4% Free
2835.39.10.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Of… 3.1% Free
2835.39.50.00 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: Other 3.7% Free
2836.20.00.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Disodium carbonate 1.2% Free
2836.40.10.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Dipotassium carbonate 1.9% Free
2836.40.20.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Potassium… 1.3% Free
2836.60.00.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Barium carbonate 2.3% Free
2836.91.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Lithium carbonates 3.7% Free
2836.92.00.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Strontium carbonate 4.2% Free
2836.99.10.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Cobalt carbonates 4.2% Free
2836.99.20.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Bismuth carbonate 5.5% Free
2836.99.30.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Commercial ammonium… 1.7% Free
2836.99.40.00 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Lead carbonates 0.5% Free
2836.99.50 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: Other 3.7% Free
2837.20.10.00 Cyanides, cyanide oxides and complex cyanides: Potassium ferricyanide 1.1% Free
2837.20.51.00 Cyanides, cyanide oxides and complex cyanides: Other 1.7% Free
2839.11.00.00 Silicates; commercial alkali metal silicates: Sodium metasilicates 1.1% Free
2839.19.00.00 Silicates; commercial alkali metal silicates: Other 1.1% Free
2839.90.10.00 Silicates; commercial alkali metal silicates: Of potassium 3.1% Free
2839.90.50.00 Silicates; commercial alkali metal silicates: Other 3.1% Free
2840.11.00.00 Borates; peroxoborates (perborates): Anhydrous 0.3% Free
2840.19.00.00 Borates; peroxoborates (perborates): Other 0.1% Free
2840.20.00.00 Borates; peroxoborates (perborates): Other borates 3.7% Free
2840.30.00 Borates; peroxoborates (perborates): Peroxoborates (perborates) 3.7% Free
2841.30.00.00 Salts of oxometallic or peroxometallic acids: Sodium dichromate 2.4% Free
2841.50.10.00 Salts of oxometallic or peroxometallic acids: Potassium dichromate 1.5% Free
2841.50.91.00 Salts of oxometallic or peroxometallic acids: Other 3.1% Free
2841.61.00.00 Salts of oxometallic or peroxometallic acids: Potassium permanganate 5% Free
2841.69.00 Salts of oxometallic or peroxometallic acids: Other 5% Free
2841.70.10.00 Salts of oxometallic or peroxometallic acids: Of ammonium 4.3% Free
2841.70.50.00 Salts of oxometallic or peroxometallic acids: Other 3.7% Free
2841.80.00 Salts of oxometallic or peroxometallic acids: Tungstates (wolframates) 5.5% Free
2841.90.10.00 Salts of oxometallic or peroxometallic acids: Vanadates 5.5% Free
2841.90.20.00 Salts of oxometallic or peroxometallic acids: Ammonium perrhenate 3.1% Free
2841.90.30.00 Salts of oxometallic or peroxometallic acids: Potassium stannate 3.1% Free
2841.90.40.00 Salts of oxometallic or peroxometallic acids: Aluminates 3.1% Free
2841.90.45.00 Salts of oxometallic or peroxometallic acids: Chromates of zinc or of lead 3.7% Free
2841.90.50.00 Salts of oxometallic or peroxometallic acids: Other 3.7% Free
2842.10.00.00 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides:… 3.7% Free
2842.90.10.00 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides:… 3.1% Free
2842.90.90 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides:… 3.3% Free
2843.10.00.00 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of… 5.5% Free
2843.21.00.00 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of… 3.7% Free
2843.29.01.00 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of… 3.7% Free
2843.30.00.00 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of… 5% Free
2843.90.00.00 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of… 3.7% Free
2844.10.10.00 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and… 5% Free
2844.10.50.00 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and… 5% Free
2844.30.10.00 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and… 5.5% Free
2844.30.50 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and… 5% Free
2846.10.00 Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals: Cerium compounds 5.5% Free
2846.90.80 Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals: Other 3.7% Free
2847.00.00.00 Hydrogen peroxide, whether or not solidified with urea 3.7% Free
2849.10.00.00 Carbides, whether or not chemically defined: Of calcium 1.8% Free
2849.20.20.00 Carbides, whether or not chemically defined: In grains, or ground, pulverized or refined 0.5% Free
2849.90.10.00 Carbides, whether or not chemically defined: Of boron 3.7% Free
2849.90.20.00 Carbides, whether or not chemically defined: Of chromium 4.2% Free
2849.90.30.00 Carbides, whether or not chemically defined: Of tungsten 5.5% Free
2849.90.50.00 Carbides, whether or not chemically defined: Other 3.7% Free
2850.00.07.00 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also… 4.9% Free
2850.00.10.00 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also… 5.5% Free
2850.00.20.00 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also… 5.5% Free
2850.00.50.00 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also… 3.7% Free
2852.10.90.00 Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams: Other 3% Free
2852.90.90.00 Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams: Other 3% Free
2853.10.00.00 Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or… 2.8% Free
2853.90.10.00 Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or… 2.6% Free
2853.90.90 Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or… 2.8% Free