Organic derivatives of hydrazine or of hydroxylamine.
Other organo-inorganic compounds. > Halogenated organo-phosphorous derivatives : > Methylphosphonic dichloride > Organic derivatives of hydrazine or of hydroxylamine.
Duty Rate (from China)
Products classified under Tariff item 2928.00
1-Phenyl-3-pyrazolidinone (Phenidone)
1-Phenyl-3-pyrazolidinone (Phenidone) is a cyclic hydrazine derivative with an aromatic phenyl substituent. It is chemically defined and used as a photographic developer and intermediate. It falls under tariff item 2928.00.00 as an organic derivative of hydrazine, with the aromatic ring not affecting classification.
2928.00.002,4-Dinitrophenylhydrazine
2,4-Dinitrophenylhydrazine (DNPH) is a dinitrated phenylhydrazine derivative, chemically defined, used for aldehyde and ketone detection. It is a hydrazine derivative with nitro groups, which are not considered nitrogen functions per Chapter 29 Note 4. It falls under tariff item 2928.00.00 as an organic derivative of hydrazine.
2928.00.004-Nitrophenylhydrazine
4-Nitrophenylhydrazine is a nitrated derivative of phenylhydrazine, a chemically defined organic compound. It is used in carbonyl compound detection and synthesis. As a hydrazine derivative, it falls under tariff item 2928.00.00, with the nitro group not affecting classification per Chapter 29 Note 4.
2928.00.00Acetylphenylhydrazine
Acetylphenylhydrazine is an N-acetyl derivative of phenylhydrazine, retaining the aromatic hydrazine core. It is chemically defined and used as an intermediate in organic synthesis. It falls under tariff item 2928.00.00 as an organic derivative of hydrazine, with the acetyl group not altering the classification.
2928.00.00Benzylideneacetone Tosylhydrazone
Benzylideneacetone Tosylhydrazone is a condensation product of an aromatic aldehyde, ketone, and tosylhydrazine, retaining hydrazine derivative character. It is chemically defined and used in organic synthesis. It falls under tariff item 2928.00.00 as an organic derivative of hydrazine, with the tosyl group not affecting classification.
2928.00.00Girard's Reagent T
p-Toluenesulfonylhydrazide (TSH) is an aromatic sulfonyl hydrazide with a tosyl group attached to hydrazine. It is chemically defined and used as a reagent in organic synthesis. It falls under tariff item 2928.00.00 as an organic derivative of hydrazine, with the sulfonyl group not affecting classification per Chapter 29 Note 6.
2928.00.00Industrial Grade Methyl Ethyl Ketoxime 99.5%
Industrial Grade Methyl Ethyl Ketoxime (MEKO) is a high-purity (99.5%) organic derivative of hydroxylamine, used as a catalyst blocker and anti-skinning agent in 2K polyurethane coatings and silicone sealants. Its chemical structure, a ketoxime derived from hydroxylamine, falls squarely under tariff item 2928.00.00 as an organic derivative of hydroxylamine. The product is a separate chemically defined compound, meeting Chapter 29 criteria.
2928.00.00MEKO Anti-Skinning Agent for Alkyd Paints
MEKO Anti-Skinning Agent for Alkyd Paints is a specialty formulation of methyl ethyl ketoxime, designed to prevent skin formation in alkyd paints by complexing cobalt/manganese driers. As a derivative of hydroxylamine, it is classified under tariff item 2928.00.00, provided it is a separate chemically defined compound. The product's function as a paint additive does not alter its chemical classification.
2928.00.00MEKO Paint Drier Blocker
MEKO Paint Drier Blocker is a low-odor methyl ethyl ketoxime used to control the release of metal catalysts in high-solids alkyd coatings. As a hydroxylamine derivative, it is a separate chemically defined compound under tariff item 2928.00.00. The product's role as a drier blocker does not exclude it from Chapter 29.
2928.00.00MEKO Silicone Cure Inhibitor
MEKO Silicone Cure Inhibitor is methyl ethyl ketoxime stabilized for use in RTV silicone sealants to inhibit surface curing. As a derivative of hydroxylamine, it is classified under tariff item 2928.00.00, provided it remains a separate chemically defined compound. The stabilization must be solely for preservation or transport per Chapter 29 Note 1(f).
2928.00.00Methyl Ethyl Ketoxime (MEKO)
Methyl Ethyl Ketoxime (MEKO) is a clear, low-viscosity liquid, a derivative of hydroxylamine, used as an anti-skinning agent in alkyd paints. It is a separate chemically defined compound, fitting tariff item 2928.00.00. The product's function in coatings does not affect its classification under Chapter 29.
2928.00.00Pharmaceutical Grade Methyl Ethyl Ketoxime
Pharmaceutical Grade Methyl Ethyl Ketoxime is an ultra-high purity (99.9%) derivative of hydroxylamine, used as an intermediate in pharmaceutical synthesis. It is a separate chemically defined compound under tariff item 2928.00.00. Its pharmaceutical grade does not change its chemical classification.
2928.00.00Phenylhydrazine
Phenylhydrazine is a chemically defined organic derivative of hydrazine, with a phenyl group attached to the hydrazine moiety (C6H5NHNH2). It is used as a reagent and intermediate in organic synthesis. It falls under tariff item 2928.00.00 as an organic derivative of hydrazine.
2928.00.00Phenylhydrazine Hydrochloride
Phenylhydrazine Hydrochloride is the hydrochloride salt of phenylhydrazine, a chemically defined organic hydrazine derivative. Per Chapter 29 Note 5(C), inorganic salts of organic compounds are classified in the heading appropriate to the organic compound. Thus, it falls under tariff item 2928.00.00.
2928.00.00Phenylhydrazine Stabilized with Acetic Acid
Phenylhydrazine Stabilized with Acetic Acid is phenylhydrazine with a minimal amount of acetic acid added to prevent oxidation. Per Chapter 29 Note 1(f), added stabilizers necessary for preservation are permitted. It remains a chemically defined hydrazine derivative under tariff item 2928.00.00.