HTS heading 3817 · Chapter 38
HTS 3817: Mixed alkylbenzenes and mixed alkylnaphthalenes, other…
HTS heading 3817 covers mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading 2707 or 2902. It has 7 tariff lines with a duty rate; the general (MFN) rates are 6.5% (5 lines), Free (1 line), 5% (1 line).
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| Mixed alkylbenzenes: | |||||
| 3817.00.10.00 | Mixed linear alkylbenzenes[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 55% | Estimate → |
| 3817.00.15.00 | Other[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 55% | Estimate → |
| 3817.00.20.00 | Mixed alkylnaphthalenes[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 3.7¢/kg + 60% | Estimate → |
| 3818.00.00 | Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics | Free | 25% | ||
| 3818.00.00.10 | Gallium arsenide wafers, doped[kg] | Estimate → | |||
| 3818.00.00.20 | Polycrystalline silicon wafers, doped[kg] | Estimate → | |||
| 3818.00.00.30 | Silicon carbide wafers, doped[kg] | Estimate → | |||
| Monocrystalline silicon wafers, doped: | |||||
| 3818.00.00.40 | Round (circular) shaped, as described in statistical note 2 to this chapter[kg] | Estimate → | |||
| 3818.00.00.45 | Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter[kg] | Estimate → | |||
| 3818.00.00.50 | Other[kg] | Estimate → | |||
| 3818.00.00.91 | Other[kg] | Estimate → | |||
| 3819.00.00 | Hydraulic brake fluids and other prepared liquids for hydraulic transmission, not containing or containing less than 70 percent by weight of petroleum oils or oils obtained from bituminous minerals | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 3.7¢/kg + 60% | |
| 3819.00.00.10 | Hydraulic brake fluids[kg] | Estimate → | |||
| 3819.00.00.90 | Other[kg] | Estimate → | |||
| 3820.00.00.00 | Antifreezing preparations and prepared deicing fluids[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 63% | Estimate → |
| 3821.00.00 | Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells | 5% | Free (A+,AU,BH,CL,CO,D,E, IL, JO,KR,MA,OM,P, PA,PE,S,SG) | 25% | |
| 3821.00.00.10 | Viral transport media[kg] | Estimate → | |||
| 3821.00.00.90 | Other[kg] | Estimate → |
18 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 3817.00.10.00 at the general rate of 6.5%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (6.5%) | $650.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $697.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- BH
- U.S.–Bahrain FTA
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- KR
- U.S.–Korea FTA (KORUS)
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.