What is the US duty on caustic soda from China?
The USITC extract imported on 25 September 2026 stores a general rate of Free on sodium hydroxide (caustic soda), both solid HTS 2815.11.00.00 and aqueous solution HTS 2815.12.00.00. That Free is the general rate in the file. It is not a China total.
Additional duties on both lines are blank, so this file does not store a Section 301 percent. The anti-dumping file dated 16 May 2026 has no row for heading 2815. This page is the United States file only. It does not state an Australian duty or a ChAFTA percent.
Open 2815.11.00.00 in the duty checkRates stored on the caustic soda lines
Source: USITC Harmonized Tariff Schedule export, updated_at 2026-09-25T11:27:06.251Z, from hts.usitc.gov exportList chapters 28 to 39. The public schedule is at hts.usitc.gov. The heading in the file reads "Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium".
| HTS | Description | General rate | Special rate | Additional duties |
|---|---|---|---|---|
| 2815.11.00.00 | Solid | Free | blank | blank |
| 2815.12.00.00 | In aqueous solution (Soda lye or liquid soda) | Free | blank | blank |
| 2815.20.00 | Potassium hydroxide (Caustic potash) | Free | blank | blank |
| 2815.30.00.00 | Peroxides of sodium or potassium | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | blank |
The other column is not shown. It does not apply to goods of China.
Solid and liquid caustic soda are the first two lines. The unit on 2815.11.00.00 is kg. The units on 2815.12.00.00 are kg and NaOH kg. The solid line has one footnote, on the other column: "See 9903.90.08." This extract stops at chapter 39, so heading 9903 is not in the file and no rate from that note is stored. The liquid line has no footnote.
The other rate is not applied to a China shipment by this page. Caustic potash is a different product. HTS 2815.20.00 stores Free general and 2.2¢/kg other. Its statistical lines 2815.20.00.50 (in solid form) and 2815.20.00.90 (other) store blank general, special, and other rates. The answer is on US duty on potassium hydroxide from China. Peroxides of sodium or potassium are not caustic soda, and they are not hydrogen peroxide. Hydrogen peroxide is HTS 2847.00.00.00, which also stores 3.7 percent general and 25 percent other. The answer is on US duty on hydrogen peroxide from China. The special-rate text on 2815.30.00.00 does not name China. Section 301 stays on the USTR Section 301 page.
Anti-dumping file
Source: the US AD/CVD file, updated_at 2026-05-16T23:32:23.566Z, 154 entries, drawn from the Trade.gov China scope index. No row names heading 2815, sodium hydroxide, or caustic soda. The file therefore stores no cash-deposit percent for this product. Check ACCESS before you treat that gap as a clearance.
Frequently asked
What is the US duty on caustic soda from China?
The USITC extract imported on 25 September 2026 stores a general rate of Free on sodium hydroxide (caustic soda): solid HTS 2815.11.00.00 and aqueous solution HTS 2815.12.00.00. That Free is the general rate in the file, not a China total. Additional duties on both lines are blank, so this file does not store a Section 301 percent.
Is solid caustic soda rated differently from liquid?
In this file both lines store general rate Free and other rate 1.1 cents per kg. The solid line has a footnote on the other column, "See 9903.90.08." The liquid line has no footnote. Heading 9903 is not in this extract, so the percent on 9903.90.08 is not stored.
Does Free include Section 301?
No. additional_duties is blank on 2815.11.00.00 and on 2815.12.00.00. Section 301 list membership and the extra percent are not in this file. Read the line on hts.usitc.gov and the USTR Section 301 page before you quote.
Is there a US anti-dumping case on caustic soda from China in this file?
The anti-dumping file dated 16 May 2026 has 154 entries and no row for heading 2815, sodium hydroxide, or caustic soda. That is not a finding that no order exists. The cash-deposit rate, if a case covers the shipment, is on ACCESS.
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Sourzi shows what official files say. It is not customs or legal advice. For a binding answer, ask a licensed customs broker, a CBP ruling or an Australian Border Force Tariff Advice.
File dates and links are on Data sources.