Pyridine Hydrochloride (CAS 628-13-7)
Pyridine hydrochloride is the crystalline salt form of pyridine with hydrochloric acid. It is used as a catalyst and reagent in organic reactions. The pyridine ring structure meets Chapter 29 note requirements for classification.
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| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is not specifically pyridine or its salts
Other heterocyclic compounds with nitrogen hetero-atom(s) only
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Import Tips & Compliance
• Classify pyridine hydrochloride under 2933.31.00 as a salt of pyridine
• Ensure proper labeling with CAS number 628-13-7
• Check if the product is hygroscopic and requires special packaging for transport
Related Products under Tariff item 2933.31.00
2-Aminopyridine (CAS 109-06-8)
2-Aminopyridine is an aromatic amine derivative containing an unfused pyridine ring with an amino group at position 2. It is used as an intermediate in pharmaceutical synthesis. Despite the amino substitution, the pyridine ring remains the core structure, and Chapter 29 notes do not exclude it from heading 29.33.
2-Picoline (2-Methylpyridine) (CAS 109-06-8)
2-Picoline (2-Methylpyridine) is a liquid alkyl derivative of pyridine with a methyl group at position 2. It is used in agrochemical and pharmaceutical synthesis. The single methyl substitution does not alter the pyridine ring classification.
4-Dimethylaminopyridine (DMAP) (CAS 1122-58-3)
4-Dimethylaminopyridine (DMAP) is a nucleophilic catalyst used in esterification and acylation reactions. It features a pyridine ring with a dimethylamino substitution at position 4. The pyridine ring structure dictates classification under this heading.
Pyridine-3-carboxylic Acid (Nicotinic Acid) (CAS 59-67-6)
Nicotinic acid (pyridine-3-carboxylic acid) is a pyridine derivative with a carboxylic acid group at position 3. It is essential for human nutrition as vitamin B3 and used in pharmaceutical applications. The pyridine ring structure determines classification.
Pyridine (CAS 110-86-1)
Pyridine is a flammable, colorless liquid heterocyclic organic compound with the molecular formula C5H5N. It contains an unfused pyridine ring and serves as a basic solvent and reagent in organic synthesis for pharmaceuticals and agrochemicals.
Pyridine N-Oxide (CAS 694-59-7)
Pyridine N-oxide features the pyridine ring with an oxygen atom bonded to the nitrogen atom. It is used as an intermediate in organic synthesis. The N-oxide maintains pyridine ring classification per heading scope.