2809.10 Diphosphorus pentaoxide 2809.10.00 A 2809.10.00 D 2809.10.01 A_North American Free Trade Agreement, 1992 Oct. 7 Tariff Phasing Descriptions

2809.20 Phosphoric acid and polyphosphoric acids 2809.20.00 A 2809.20.00 D 2809.20.01 C

2809.20.02 A

2809.20.03 A

2809.20.99 A

2810.00 Oxides of boron; boric acids 2810.00.00 D 2810.00.00 A 2810.00.01 C

2810.00.02 A

2810.00.03 A

2810.00.99 A

2811.11 Hydrogen fluoride (hydrofluoric acid) 2811.11.00 D 2811.11.00 D 2811.11.01 B

2811.11.99 A

2811.19 Inorganic acids nes 2811.19.10 D 2811.19.10 A 2811.19.01 A

2811.19.90 A 2811.19.50 A 2811.19.02 B

2811.19.03 A

2811.19.04 A

2811.19.99 A

2811.21 Carbon dioxide 2811.21.00 A 2811.21.00 A 2811.21.01 B

2811.21.02 A

2811.21.03 A

2811.22 Silicon dioxide 2811.22.00 A 2811.22.10 A 2811.22.01 C

2811.22.50 D 2811.22.02 D

2811.22.03 A

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