From Chapter 28: Chapter 28
| HTS Code | Description | General Duty |
|---|---|---|
| 2815110000 | Sodium hydroxide (Caustic soda) Solid | Free |
| 2815120000 | Sodium hydroxide (Caustic soda) In aqueous solution (Soda lye or liquid soda) | Free |
| 2815200000 | Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium Potassium hydroxide (Caustic potash) | Free |
| 2815200050 | Potassium hydroxide (Caustic potash) In solid form | Free |
| 2815200090 | Potassium hydroxide (Caustic potash) Other | Free |
| 2815300000 | Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium Peroxides of sodium or potassium | 3.7% |