Piperidine and its salts
Heterocyclic compounds with oxygen hetero-atom(s) only. > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Piperidine and its salts > Piperidine and its salts
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2933.32
1-(2-Methoxyethyl)piperidine
1-(2-Methoxyethyl)piperidine is an ether-substituted piperidine used as a synthetic intermediate. Its core piperidine ring structure qualifies it for classification under this tariff item as a piperidine derivative.
2933.32.001-Benzylpiperidine
1-Benzylpiperidine is an N-protected piperidine derivative used in medicinal chemistry. Its unfused piperidine ring structure places it under this tariff item as a piperidine compound.
2933.32.001-Methylpiperidine
1-Methylpiperidine is an N-alkylated derivative of piperidine, a saturated six-membered heterocyclic amine. It is used as a base in organic synthesis and as a solvent in chemical reactions.
2933.32.003,5-Dimethylpiperidine
3,5-Dimethylpiperidine is a dialkylated piperidine derivative used in chiral ligand synthesis. As a simple substituted piperidine, it falls under this tariff item.
2933.32.004-Aminopiperidine Dihydrochloride
4-Aminopiperidine dihydrochloride is a substituted piperidine salt used in pharmaceutical intermediate synthesis. The core piperidine ring structure and salt form classify it under this tariff item.
2933.32.004-Phenylpiperidine Hydrochloride
4-Phenylpiperidine hydrochloride is a key intermediate for opioid analgesics. The core piperidine ring structure qualifies it for this tariff item despite the phenyl substitution.
2933.32.004-Piperidone Hydrochloride Monohydrate
4-Piperidone hydrochloride monohydrate is a cyclic ketone derivative of piperidine used in alkaloid synthesis. The piperidine ring structure dominates classification under this tariff item.
2933.32.0098% Pure Piperidine ACS Reagent Grade
98% Pure Piperidine ACS Reagent Grade is piperidine with a purity of 98% meeting American Chemical Society standards. Despite the presence of impurities, Chapter Note 1(a) includes compounds 'whether or not containing impurities'.
2933.32.00Deuterated Piperidine-d11
Deuterated Piperidine-d11 is an isotopically substituted form of piperidine where all hydrogen atoms are replaced by deuterium. It is used primarily as a solvent or internal standard in NMR spectroscopy. Under Chapter Note 1(a), separate chemically defined organic compounds, including isotopic variants, are classified in this heading.
2933.32.00Piperidine
Piperidine is a saturated six-membered heterocyclic amine with the formula C5H10NH, containing a nitrogen hetero-atom in the ring. As a separate chemically defined organic compound, it is classified under this tariff item.
2933.32.00Piperidine for Rubber Accelerator Synthesis
Technical grade piperidine designated for rubber accelerator production remains classified as piperidine regardless of its intended end-use. The tariff item covers the chemical compound itself, not its applications.
2933.32.00Piperidine Hydrochloride
Piperidine hydrochloride is the salt form of piperidine (C5H10NH·HCl), commonly used in organic synthesis. Under Chapter Note 5(C)(1), inorganic salts of organic compounds are classified in the heading appropriate to the organic compound.
2933.32.00Piperidine with Anti-Dusting Agent
Piperidine with an anti-dusting agent, such as fumed silica, is treated for safer bulk handling. Chapter Note 1(g) permits the addition of anti-dusting agents for safety reasons, provided the product remains suitable for general use.
2933.32.00Piperidinium Acetate Salt
Piperidinium acetate is the acetate salt of piperidine, used as a catalyst in organic reactions. Under Chapter Note 5(C)(2), salts formed between organic compounds are classified in the heading appropriate to the base or acid, whichever occurs last in numerical order.
2933.32.00Stabilized Piperidine with Antioxidant
Stabilized piperidine with an antioxidant like BHT is treated for safe transport and storage. Chapter Note 1(f) allows the addition of stabilizers necessary for preservation or transport without changing classification.