Methacrylic Acid
Methacrylic acid is an unsaturated acyclic monocarboxylic acid with the formula CH2=C(CH3)COOH, featuring a carbon-carbon double bond. It falls under HTS 2916.19.50.00 as an 'other' unsaturated acyclic monocarboxylic acid not specifically enumerated elsewhere in the subheading. Commonly used in the production of acrylic polymers and resins.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3.7% | +25.0% | 28.7% |
| 🇲🇽Mexico | 3.7% | — | 3.7% |
| 🇨🇦Canada | 3.7% | — | 3.7% |
| 🇩🇪Germany | 3.7% | — | 3.7% |
| 🇯🇵Japan | 3.7% | — | 3.7% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as acrylic acid
Acrylic acid has specific enumeration earlier in 2916.11; methacrylic acid differs by methyl substitution on the double bond.
If imported as aqueous solution exceeding transport safety limits
Chapter 29 excludes solutions where solvent renders product suitable for specific use beyond safety/transport (note e).
If esterified with ethyl alcohol
Esters of ethyl alcohol with Chapter 29 acids classified with parent acid per note 5(A)(B), but different oxygen function may shift heading.
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Import Tips & Compliance
• Provide detailed chemical analysis (GC-MS, NMR) confirming unsaturated acyclic structure and purity to avoid misclassification as acrylic acid (2916.11)
• Include Safety Data Sheets (SDS) and CAS number (79-41-4) documentation for customs verification
• Ensure stabilizer declaration if present, as per Chapter 29 note (f), to prevent reclassification
Related Products under HTS 2916.19.50.00
Crotonic Acid
Crotonic acid (2-butenoic acid, CH3CH=CHCOOH) is an unsaturated acyclic monocarboxylic acid with a trans double bond. Classified under HTS 2916.19.50.00 as 'other' unsaturated acyclic acids. Used in resins, plastics, and pharmaceuticals.
Sorbic Acid
Sorbic acid (2,4-hexadienoic acid, CH3CH=CH-CH=CHCOOH) is a polyunsaturated acyclic monocarboxylic acid used as a food preservative. Falls under HTS 2916.19.50.00 as 'other' unsaturated acyclic monocarboxylic acid. Its conjugated double bonds characterize its antimicrobial properties.
Oleic Acid
Oleic acid (cis-9-octadecenoic acid) is a long-chain unsaturated acyclic monocarboxylic acid with one double bond, derived from vegetable oils. Classified in HTS 2916.19.50.00 as 'other' unsaturated acyclic acid. Widely used in cosmetics, soaps, and lubricants.
Undecylenic Acid
Undecylenic acid (10-undecenoic acid, CH2=CH(CH2)8COOH) is an unsaturated acyclic monocarboxylic acid with terminal double bond, produced from castor oil. HTS 2916.19.50.00 classification as 'other' unsaturated acid. Used in antifungal treatments and polymers.
Myristoleic Acid
Myristoleic acid (cis-9-tetradecenoic acid) is a C14:1 unsaturated acyclic monocarboxylic fatty acid found in fish oils. Classified under HTS 2916.19.50.00 as other unsaturated acyclic monocarboxylic acid. Used in biochemical research and cosmetics.
Palmitoleic Acid
Palmitoleic acid (cis-9-hexadecenoic acid, C16:1) is an omega-7 monounsaturated acyclic fatty acid abundant in macadamia oil. HTS 2916.19.50.00 as other unsaturated acyclic monocarboxylic acid. Applied in skincare and nutritional supplements.