trans-Ferulic Acid USP
trans-Ferulic acid USP grade is a specified isomer of hydroxycinnamic acid, classified under this tariff item as a carboxylic acid with phenol function. This pharmaceutical antioxidant standard is a separate chemically defined organic compound, meeting the chapter's requirements for classification.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the USP grade and isomer purity with a certificate of analysis
• If the product is for pharmaceutical use, ensure it is not put up in measured doses for retail sale
• Check if any added substances are present, as they must be necessary for preservation or transport
Related Products under Tariff item 2918.29.00
1-Hydroxy-2-Naphthoic Acid
1-Hydroxy-2-naphthoic acid is a naphthol carboxylic acid with both phenol and carboxylic acid functions, without other oxygen groups. It is used as an intermediate in the production of dyes and pharmaceuticals. This compound falls under tariff item 2918.29.00 as a carboxylic acid with phenol function.
1-Hydroxy-2-Naphthoic Acid Phenyl Ester
1-Hydroxy-2-naphthoic acid phenyl ester is the phenyl ester derivative of 1-hydroxy-2-naphthoic acid. Per Chapter 29 ester rules, it is classified with the parent acid. This ester is used in fine chemical synthesis and as an intermediate.
2,3-Cresotic Acid
2,3-Cresotic acid, also known as 2,3-dihydroxy-4-methylbenzoic acid, is a carboxylic acid with a phenol function. It is used in the synthesis of dyes and pharmaceuticals. This compound is classified under tariff item 2918.29.00 as an 'other' carboxylic acid with phenol function.
2-Hydroxy-1-Naphthoic Acid
2-Hydroxy-1-naphthoic acid is a phenolic naphthoic acid used in azo dye coupling and pharmaceutical synthesis. It has both phenol and carboxylic acid functions without other oxygen groups. This compound falls under tariff item 2918.29.00.
2-Hydroxybenzoic Acid Calcium Salt
2-Hydroxybenzoic acid calcium salt, or calcium salicylate, is the calcium salt of salicylic acid. Per Chapter 29 note 5, inorganic salts of organic acids are classified with the parent acid. It is used in pharmaceutical applications.
3,4-Dihydroxycinnamic Acid
3,4-Dihydroxycinnamic acid, also known as caffeic acid, is a hydroxycinnamic acid with a phenolic carboxylic acid structure. It is a separate chemically defined organic compound and falls under this tariff item as a carboxylic acid with phenol function without other oxygen functions.