Nitroso-Dimethylol Urea
Nitroso-Dimethylol Urea is a hydantoin derivative used as a slow-release nitrogen source in agricultural applications and slow-cure resins. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as a fertilizer in retail packs
Mineral or chemical fertilizers may be classified in chapter 31.
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
• Verify the product's chemical structure and purity with a certificate of analysis
• Check if agricultural use requires registration under the Pest Control Products Act
• Use the correct HS code 2933.21.00 for customs
Related Products under Tariff item 2933.21.00
5,5-Diphenylhydantoin (Phenytoin Base)
5,5-Diphenylhydantoin (Phenytoin Base) is the active pharmaceutical base form of the anticonvulsant phenytoin, a classic hydantoin derivative. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
Allantoin USP
Allantoin USP is a chemically defined hydantoin derivative with an unfused imidazole ring, used in cosmetics, pharmaceuticals, and wound-healing products for its soothing and keratolytic properties. It is classified under tariff item 2933.21.00 as a hydantoin derivative, meeting the chapter 29 criteria for separate chemically defined organic compounds.
Dimethylol Propylene Urea
Dimethylol Propylene Urea is a hydantoin derivative used as a formaldehyde-free crosslinking agent in textile finishing and paper treatment. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
Methone (5,5-Dimethylhydantoin)
Methone (5,5-Dimethylhydantoin) is a hydantoin derivative used as an intermediate in pharmaceutical synthesis and polymer modification. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
Methylethylketone Peroxide Stabilized with Hydroxypropyl Methacrylate
Methylethylketone Peroxide Stabilized with Hydroxypropyl Methacrylate is a hydantoin-structured curing agent used in polymer composites and gelcoat resins. Despite the stabilizer, the core hydantoin compound is classifiable under tariff item 2933.21.00 as a hydantoin derivative, provided the stabilizer does not alter its essential character.
Parabanic Acid
Parabanic Acid is a simple hydantoin derivative used as an analytical reagent and synthetic intermediate. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.