# HTS 2909: Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives

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Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=2909). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 2909: Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 2909 | Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives |  |  |  |  |
|  |   Acyclic ethers and their halogenated, sulfonated, nitrated or nitrosated derivatives: |  |  |  |  |
| 2909.11.00.00 |     Diethyl ether | 1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 4% | kg |
| 2909.19 |     Other: |  |  |  |  |
|  |       Ethers of monohydric alcohols: |  |  |  |  |
| 2909.19.14.00 |         Methyl tertiary-butyl ether (MTBE) | 5.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 37% | kg |
| 2909.19.18.00 |         Other | 5.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 37% | kg |
|  |       Ethers of polyhydric alcohols: |  |  |  |  |
| 2909.19.30.00 |         Triethylene glycol dichloride | Free |  | 54.5% | kg |
| 2909.19.60.00 |         Other | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 54.5% | kg |
| 2909.20.00.00 |   Cyclanic, cyclenic or cycloterpenic ethers and their halogenated, sulfonated, nitrated or nitrosated derivatives | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 2909.30 |   Aromatic ethers and their halogenated, sulfonated, nitrated or nitrosated derivatives: |  |  |  |  |
| 2909.30.05.00 |     5-Chloro-2-nitroanisole; 6-Chloro-3-nitro-p-dimethoxybenzene; and Dimethyl diphenyl ether | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 40% | kg |
| 2909.30.07.00 |     Decabromodiphenyl oxide; and Octabromodiphenyl oxide | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.30.09.00 |     Bis(tribromophenoxy)ethane; Pentabromodiphenyl oxide; and Tetra decabromodiphenoxy benzene | Free |  | 15.4¢/kg + 70.5% | kg |
|  |     Other: |  |  |  |  |
|  |       Odoriferous or flavoring compounds: |  |  |  |  |
| 2909.30.10.00 |         6-tert-Butyl-3-methyl-2,4-dinitroanisole (Musk ambrette) and other artificial musks | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg +57% | kg |
| 2909.30.20.00 |         Other | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg +58% | kg |
| 2909.30.30.00 |       Pesticides | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg +48.5% | kg |
|  |       Other: |  |  |  |  |
| 2909.30.40.00 |         Products described in additional U.S. note 3 to section VI | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.30.60.00 |         Other | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
|  |   Ether-alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives: |  |  |  |  |
| 2909.41.00.00 |     2,2'-Oxydiethanol (Diethylene glycol, Digol) | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 54.5% | kg |
| 2909.43.00.00 |     Monobutyl ethers of ethylene glycol or of diethylene glycol | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 54.5% | kg |
| 2909.44.01 |     Other monoalkyl ethers of ethylene glycol or of diethylene glycol | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 54.5% |  |
| 2909.44.01.10 |       Monomethyl ethers of ethylene glycol or of diethylene glycol | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 54.5% | kg |
| 2909.44.01.50 |       Other | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 54.5% | kg |
| 2909.49 |     Other: |  |  |  |  |
|  |       Aromatic: |  |  |  |  |
| 2909.49.05.00 |         Guaifenesin | Free |  | 15.4¢/kg + 79% | kg |
|  |         Other: |  |  |  |  |
| 2909.49.10.00 |           Products described in additional U.S. note 3 to section VI | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.49.15.00 |           Other | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
|  |       Other: |  |  |  |  |
| 2909.49.20.00 |         Glycerol ethers | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 2909.49.30.00 |         Dipentaerythritol having a purity of 94 percent or more by weight | Free |  | 54.5% | kg |
| 2909.49.60.00 |         Other | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 54.5% | kg |
| 2909.50 |   Ether-phenols, ether-alcohol-phenols and their halogenated, sulfonated, nitrated or nitrosated derivatives: |  |  |  |  |
| 2909.50.10.00 |     4-Ethylguaiacol | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 40% | kg |
| 2909.50.20.00 |     Guaiacol and its derivatives | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg +79% | kg |
|  |     Other: |  |  |  |  |
| 2909.50.40 |       Odoriferous or flavoring compounds | 4.8% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 45% |  |
| 2909.50.40.10 |         Eugenol and isoeugenol | 4.8% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 45% | kg |
| 2909.50.40.50 |         Other | 4.8% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 45% | kg |
|  |       Other: |  |  |  |  |
| 2909.50.45.00 |         Products described in additional U.S. note 3 to section VI | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.50.50.00 |         Other | 5.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.60 |   Alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides and their halogenated, sulfonated, nitrated or nitrosated derivatives: |  |  |  |  |
|  |     Aromatic: |  |  |  |  |
| 2909.60.10.00 |       Products described in additional U.S. note 3 to section VI | 5.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.60.20.00 |       Other | 5.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 70.5% | kg |
| 2909.60.50.00 |     Other | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |