HTS US: 2918.XX.XXXX
Description
Heading 2918 covers carboxylic acids that contain additional oxygen functions beyond the basic carboxyl group. This includes their anhydrides, halides, peroxides, peroxyacids, and derivatives such as halogenated, sulfonated, nitrated, or nitrosated compounds. The substances classified under this heading are widely used in pharmaceuticals, food additives, industrial chemicals, and agrochemicals.
Included are naturally occurring and synthetic acids, their salts, and esters. These compounds often play important roles as intermediates in chemical synthesis or as active ingredients in various products.
Code Hierarchy
- Section VI: Products of the Chemical or Allied Industries (Chapters 28-38)
- Chapter 29: Organic Chemicals
- Heading 2918: Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
- US HTS Code (10-digit):
2918.XX.XXXX– Detailed subheadings specify exact chemical compounds, salts, or esters.
Detailed Breakdown of Subheadings
The 4-digit HS heading 2918 is further divided into numerous subheadings identifying specific acids, their salts, esters, and derivatives. Below is a complete breakdown with descriptions and examples.
| HS/HTS Code | Description | Examples & Notes |
|---|---|---|
| 2918.11 | Lactic acid, its salts and esters | Includes pure lactic acid and other related compounds. |
| 2918.11.10.00 | Lactic acid | Commonly used in food and pharmaceutical industries. |
| 2918.11.51.00 | Other lactic acid salts and esters | Various salts and ester forms. |
| 2918.12.00.00 | Tartaric acid | Used in food processing and pharmaceuticals. |
| 2918.13 | Salts and esters of tartaric acid | Includes multiple potassium salts. |
| 2918.13.10.00 | Potassium antimony tartrate (Tartar emetic) | Medicinal and industrial uses. |
| 2918.13.20.00 | Potassium bitartrate (Cream of tartar) | Used in cooking and baking. |
| 2918.13.30.00 | Potassium sodium tartrate (Rochelle salts) | Used in laboratories and industry. |
| 2918.13.50.00 | Other salts and esters of tartaric acid | Miscellaneous derivatives. |
| 2918.14.00.00 | Citric acid | Widely used in food, cosmetics, and pharmaceuticals. |
| 2918.15 | Salts and esters of citric acid | Various sodium salts and others. |
| 2918.15.10.00 | Sodium citrate | Common food additive and buffering agent. |
| 2918.15.50.00 | Other salts and esters of citric acid | Additional derivatives. |
| 2918.16 | Gluconic acid, its salts and esters | Used in food and pharmaceutical industries. |
| 2918.16.10.00 | Gluconic acid | Natural acid from glucose oxidation. |
| 2918.16.50 | Other gluconic acid salts and esters | |
| 2918.16.50.10 | Sodium gluconate | Used as a chelating agent. |
| 2918.16.50.50 | Other salts and esters | |
| 2918.17.00.01 | 2,2-Diphenyl-2-hydroxyacetic acid (benzilic acid) | Used in synthesis of pharmaceuticals. |
| 2918.18.00.00 | Chlorobenzilate (ISO) | Insecticide (restricted use). |
| 2918.19 | Other carboxylic acids and derivatives | Various esters and acids including mandelic acid. |
| 2918.19.11.00 | Benzilic acid, methyl ester | Used in organic synthesis. |
| 2918.19.12.00 | Mandelic acid | Used in cosmetics and pharmaceuticals. |
| 2918.19.15.00 | Other | |
| 2918.19.20.00 | Products described in additional U.S. note 3 to section VI | Special regulatory category. |
| 2918.19.31.00 | Other | |
| 2918.19.60.00 | Malic acid | Used in food and beverages. |
| 2918.19.90.00 | Other | |
| 2918.21 | Salicylic acid and its salts | Used in medicinal and industrial applications. |
| 2918.21.10.00 | Suitable for medicinal use | Pharmaceutical grade salicylic acid. |
| 2918.21.50.00 | Other | |
| 2918.22 | O-Acetylsalicylic acid, its salts and esters | Commonly known as aspirin and its derivatives. |
| 2918.22.10.00 | O-Acetylsalicylic acid (Aspirin) | Widely used analgesic and anti-inflammatory drug. |
| 2918.22.50.00 | Salts and esters of O-acetylsalicylic acid | Various pharmaceutical formulations. |
| 2918.23 | Other esters of salicylic acid and their salts | Used for medicinal and flavoring purposes. |
| 2918.23.10.00 | Salol (Phenyl salicylate) suitable for medicinal use | Used as analgesic and antiseptic. |
| 2918.23.20.00 | Odoriferous or flavoring compounds | Used in perfumes and food flavoring. |
| 2918.23.30.00 | Products described in additional U.S. note 3 to section VI | Regulatory category. |
| 2918.23.50.00 | Other | |
| 2918.29 | Other carboxylic acids and derivatives | Includes a variety of hydroxybenzoic and naphthoic acids. |
| 2918.29.04.00 | Various hydroxy acids and salts | Includes 2,3-Cresotic acid, α-Resorcylic acid, 5-Sulfosalicylic acid, etc. |
| 2918.29.06.00 | 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate | Specialized chemical compound. |
| 2918.29.08.00 | m-Hydroxybenzoic acid | Used in dyes and pharmaceuticals. |
| 2918.29.20.00 | Gentisic acid; Hydroxycinnamic acid and its salts | Natural antioxidants and intermediates. |
| 2918.29.22.00 | p-Hydroxybenzoic acid | Used as preservative and in cosmetics. |
| 2918.29.25.00 | 3-Hydroxy-2-naphthoic acid | Intermediate in chemical synthesis. |
| 2918.29.30.00 | Gallic acid | Used in pharmaceuticals and dyes. |
| 2918.29.39.00 | 4,4-Bis(4-hydroxyphenyl) pentanoic acid; 3,5,6-Trichlorosalicylic acid | Industrial chemicals. |
| 2918.29.65.00 | Products described in additional U.S. note 3 to section VI | Regulatory category. |
| 2918.29.75.00 | Other | Miscellaneous compounds. |
| 2918.30 | Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and derivatives | Includes keto and formyl derivatives. |
| 2918.30.10.00 | 1-Formylphenylacetic acid, methyl ester | Used in organic synthesis. |
| 2918.30.15.00 | 2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; Ethyl 2-keto-4-phenylbutanoate | Specialized esters. |
| 2918.30.25.00 | Products described in additional U.S. note 3 to section VI | Regulatory category. |
| 2918.30.30.00 | Other | Miscellaneous derivatives. |
| 2918.30.70.00 | Dimethyl acetyl succinate; Oxalacetic acid diethyl ester, sodium salt; 4,4,4-Trifluoro-3-oxobutanoic acid esters | Used in pharmaceuticals and research. |
| 2918.30.90.00 | Other | Various other compounds. |
| 2918.91.00.00 | 2,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters | Herbicide with restricted use. |
| 2918.99 | Other carboxylic acids and derivatives | Includes miscellaneous acids, salts, esters, drugs, and flavoring compounds. |
| 2918.99.05.00 | p-Anisic acid; Clofibrate; and 3-Phenoxybenzoic acid | Pharmaceutical and industrial chemicals. |
| 2918.99.06.00 | 1-Hydroxy-6-octadecyloxy-2-naphthalene-carboxylic acid; 1-Hydroxy-6-docosyloxy-2-naphthalene-carboxylic acid | Specialized derivatives. |
| 2918.99.14.00 | 2-(4-Chloro-2-methylphenoxy)propionic acid and its salts | Herbicide components. |
| 2918.99.18.00 | 4-(4-Chloro-2-methylphenoxy)butyric acid; p-Chlorophenoxyacetic acid; 2-(2,4-Dichlorophenoxy)propionic acid | Herbicides. |
| 2918.99.20 | Other | |
| 2918.99.20.10 | 2,4-Dichlorophenoxyacetic acid, its salts and esters | Widely used herbicide (2,4-D). |
| 2918.99.20.15 | 2-Methyl-4-chlorophenoxyacetic acid | Herbicide compound. |
| 2918.99.20.50 | Other | Miscellaneous. |
| 2918.99.30.00 | Drugs | Pharmaceutical substances. |
| 2918.99.35.00 | Odoriferous or flavoring compounds | Used in perfumes and food flavoring. |
| 2918.99.43.00 | Products described in additional U.S. note 3 to section VI | Regulatory category. |
| 2918.99.47.00 | Other | Miscellaneous compounds. |
| 2918.99.50.00 | Other | Various others. |
What is NOT Classified Here?
Compounds not classified under this heading include:
- Simple carboxylic acids without additional oxygen functions which fall under other headings.
- Compounds where the acid function is modified beyond recognition or included in complex mixtures under other headings.
- Salts and esters of acids not specified here are classified elsewhere depending on chemical structure.
Notes
- Regulatory Notes: Some substances under this heading, such as herbicides and pesticides, may be subject to special import and use regulations.
- Duty Rates: Vary widely depending on the specific compound, purpose, and chemical form.
- Special U.S. Notes: Certain subheadings refer to additional U.S. notes for specific regulatory or classification purposes.
Declaration Example
Product: A shipment of pharmaceutical-grade O-Acetylsalicylic acid (Aspirin).US HTS Code:
2918.22.10.00Unit of Quantity: Kilogram (kg)
General Duty Rate: Check current USHTS listings (varies by use and purity)
Additional Requirements: Compliance with FDA and EPA regulations if applicable.
Related HTS Codes
- HTS 2905: Acyclic alcohols and their derivatives.
- HTS 2916: Unsaturated acyclic monocarboxylic acids and their derivatives.
- HTS 3202: Tanning extracts of vegetable origin, dyes, pigments.
- HTS 3808: Insecticides, rodenticides, fungicides, herbicides.
