HS Heading 2918 : Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
HEADING DEFINITION & DISAMBIGUATION
HS Heading 2918 encompasses carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives. It classifies 16 6-digit WCO subheadings within Chapter 29 under the Harmonized System [USITC HTS 2026].
Subheadings Under Heading 2918
| HS Code | WCO 6-Digit Subheading Description | Chapter | Operational Package |
|---|---|---|---|
| 2918.11 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Lactic acid, its salts and esters | 29 | View 2918.11 Package → |
| 2918.12 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Tartaric acid | 29 | View 2918.12 Package → |
| 2918.13 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salts and esters of tartaric acid | 29 | View 2918.13 Package → |
| 2918.14 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Citric acid | 29 | View 2918.14 Package → |
| 2918.15 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salts and esters of citric acid | 29 | View 2918.15 Package → |
| 2918.16 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Gluconic acid, its salts and esters | 29 | View 2918.16 Package → |
| 2918.17 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, 2,2-Diphenyl-2-hydroxyacetic acid (benzilic acid) | 29 | View 2918.17 Package → |
| 2918.18 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Chlorobenzilate (ISO) | 29 | View 2918.18 Package → |
| 2918.19 | Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other | 29 | View 2918.19 Package → |
| 2918.21 | Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salicylic acid and its salts | 29 | View 2918.21 Package → |
| 2918.22 | Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, O-Acetylsalicylic acid, its salts and esters | 29 | View 2918.22 Package → |
| 2918.23 | Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other esters of salicylic acid and their salts | 29 | View 2918.23 Package → |
| 2918.29 | Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other | 29 | View 2918.29 Package → |
| 2918.30 | Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives | 29 | View 2918.30 Package → |
| 2918.91 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives, Other, 2,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters | 29 | View 2918.91 Package → |
| 2918.99 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives, Other, Other | 29 | View 2918.99 Package → |
DISAMBIGUATION & CLASSIFICATION GUIDE
How to Select the Correct Subheading Under Heading 2918
Commercial shipments must be declared under the exact 6-digit WCO subheading that matches physical, chemical, or processing characteristics. Review the subheading descriptions above and verify against binding CBP CROSS rulings prior to entry filing.
Official Primary Sources & Authority References
USITC HTS Heading 2918 ↗
United States International Trade Commission official Harmonized Tariff Schedule.
CBP CROSS Rulings ↗
CBP e-Rulings database for Heading 2918 precedent rulings.
WCO Nomenclature ↗
World Customs Organization Harmonized System 2022 nomenclature standard.
U.S. Census Foreign Trade ↗
U.S. Census Bureau HTS-to-NAICS concordance and Schedule B export database.
Heading 2918 Frequently Asked Questions (FAQ)
What commercial articles are grouped under HS Heading 2918?
HS Heading 2918 covers Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives, grouping 16 6-digit WCO subheadings.
How are 6-digit subheadings structured under Heading 2918?
Subheadings under Heading 2918 range from 2918.11 to 2918.90, classifying goods by processing state, origin, or material composition.
What is the representative US import duty rate for Heading 2918?
US MFN general duty rates for Heading 2918 commodities range from Duty-Free up to representative ad valorem percentages under the 2026 US HTS.
Are Section 301 tariffs applicable to goods under Heading 2918?
Section 301 additional tariffs depend on the specific 8-digit or 10-digit US HTS code and country of origin (e.g. China Lists 1–4A).
What PGA message set flags apply to Heading 2918?
Partner Government Agency flags (FDA, USDA APHIS, EPA) apply depending on the specific commodity sub-classification.
How do I distinguish between subheadings under Heading 2918?
Review WCO subheading terms and candidate descriptions. For example, unroasted vs. roasted or decaffeinated vs. non-decaffeinated.
Can goods under Heading 2918 enter duty-free under USMCA?
Yes. Goods originating in USMCA territories (US, Mexico, Canada) enter duty-free under SPI code P with a valid Certificate of Origin.
What is the Section 321 de minimis limit for Heading 2918?
Eligible import shipments valued at $800 USD or less imported by one person on one day enter duty-free under 19 U.S.C. 1321.
What documents are required for formal customs entry of Heading 2918?
Commercial Invoice, Packing List, Bill of Lading, and CBP Form 7501 are mandatory for entries exceeding $2,500 USD.
How can an importer get a binding CBP classification ruling for Heading 2918?
Importers may apply for a binding ruling via CBP National Commodity Specialist Division under 19 CFR Part 177.