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2-Hydroxybutyric Acid

This alpha-hydroxy acid contains the required carboxylic-alcohol structure for 2918.19.90.00 classification. Used in polymer synthesis and metabolic studies.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China4%+133.5%137.5%
🇲🇽Mexico4%+106.0%110%
🇨🇦Canada4%+106.0%110%
🇩🇪GermanyFree+21.0%21%
🇯🇵JapanFree+23.5%23.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3824.99Lower: 17.5% vs 137.5%

If when diluted for specific industrial applications

Application-specific preparations move to mixtures heading.

2903.69Lower: 16.2% vs 137.5%

If classified by alcohol function

Principal function determines heading per classification notes.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

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Import Tips & Compliance

• Confirm optical purity if chiral applications to document isomer status

• Provide molecular formula verification (C4H8O3) in COA

• Avoid retail packaging that might trigger chapter 38 classification

Related Products under HTS 2918.19.90.00

Lactic Acid

Lactic acid (2-hydroxypropanoic acid) is a carboxylic acid containing a hydroxyl group, classifying it under HTS 2918.19.90.00 as a carboxylic acid with alcohol function but without other oxygen functions. It is commonly used in food preservation, cosmetics, and biodegradable plastics.

Hydroxyacetic Acid (Glycolic Acid)

Glycolic acid is the smallest alpha-hydroxy acid with both carboxylic and alcohol functions, fitting HTS 2918.19.90.00 criteria. Widely used in skincare exfoliants and chemical peels at concentrations up to 70%.

Tartronic Acid

Tartronic acid (2-hydroxypropanedioic acid) contains both carboxylic acid and alcohol functions without additional oxygen groups, qualifying for 2918.19.90.00. Used in pharmaceutical intermediates and biochemical research.

Glyceric Acid

Glyceric acid features a carboxylic group with adjacent hydroxyl functionality, classified under 2918.19.90.00. Applied in sugar chemistry research and as a chiral building block.

Mandelic Acid

Mandelic acid (alpha-hydroxyphenylacetic acid) qualifies under 2918.19.90.00 with its alpha-hydroxy carboxylic structure. Common in pharmaceutical synthesis and skincare.

Tropic Acid

Tropic acid serves as key intermediate for anticholinergic pharmaceuticals, featuring the alcohol-carboxylic acid structure of 2918.19.90.00.