1-Phenyl-3-pyrazolidinone (Phenidone)
Phenidone, or 1-phenyl-3-pyrazolidinone, is a cyclic hydrazine derivative with an aromatic phenyl substituent. It falls under HTS 2928.00.25.00 as an aromatic derivative of hydrazine, chemically defined and within Chapter 29 scope excluding only specific forms. Used as a photographic developer and antioxidant.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.5% | +25.0% | 31.5% |
| 🇲🇽Mexico | 6.5% | — | 6.5% |
| 🇨🇦Canada | 6.5% | — | 6.5% |
| 🇩🇪Germany | 6.5% | — | 6.5% |
| 🇯🇵Japan | 6.5% | — | 6.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If heterocyclic compound without hydrazine dominance
Pyrazolidinone ring classified as heterocycle in 2933 if hydrazine function not principal.
If as prepared photographic chemical
Mixtures for photography exclude pure compounds from Chapter 29.
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Import Tips & Compliance
• Include end-use statement if for industrial photography to avoid pharma scrutiny
• Ensure no added solvents beyond transport necessities per Chapter 29 note (e)
• Comply with REACH if transshipping through EU
Related Products under HTS 2928.00.25.00
Phenylhydrazine Hydrochloride
Phenylhydrazine hydrochloride is an aromatic derivative of hydrazine, featuring a phenyl group attached to the hydrazine moiety with a hydrochloride salt form. It falls under HTS 2928.00.25.00 as an aromatic organic derivative of hydrazine, consistent with Chapter 29 notes for chemically defined organic compounds. Commonly used in organic synthesis and analytical chemistry for derivative formation.
2,4-Dinitrophenylhydrazine
2,4-Dinitrophenylhydrazine (DNPH) is an aromatic hydrazine derivative with nitro groups on the phenyl ring, used primarily for carbonyl compound identification. Classified under HTS 2928.00.25.00 as an aromatic derivative of hydrazine per Chapter 29 scope for separate chemically defined compounds. Its structure maintains the hydrazine parent with aromatic substitution.
4-Nitrophenylhydrazine
4-Nitrophenylhydrazine is a chemically defined aromatic derivative featuring a nitro-substituted phenyl ring linked to hydrazine. It qualifies for HTS 2928.00.25.00 under Chapter 29 as a separate organic hydrazine derivative, not covered by exclusions like coloring matters. Used in pharmaceutical intermediates and dye synthesis.
Acetylphenylhydrazine
Acetylphenylhydrazine is an N-acetyl derivative of phenylhydrazine, retaining its aromatic hydrazine core structure. It is classified under HTS 2928.00.25.00 as an aromatic hydrazine derivative, where the acetyl group is a substituent on the nitrogen per Chapter 29 rules for derivatives. Applied in organic synthesis and as a reagent.
p-Toluenesulfonylhydrazide
p-Toluenesulfonylhydrazide (TSH) is an aromatic sulfonyl hydrazide with a tosyl group attached to hydrazine. Classified in HTS 2928.00.25.00 as an aromatic hydrazine derivative; sulfonated forms remain here unless organo-sulfur dominates per notes. Widely used as a foaming agent in plastics.
Benzylideneacetone Tosylhydrazone
Benzylideneacetone tosylhydrazone is a condensation product of an aromatic aldehyde, ketone, and tosylhydrazine, retaining hydrazine derivative character. It qualifies under HTS 2928.00.25.00 as aromatic per Chapter 29 for chemically defined hydrazine derivatives. Used in organic synthesis like Shapiro reaction.