HTS US: 2981.XX.XXXX
Description
HTS Code 2981 encompasses a range of organo-inorganic compounds and heterocyclic compounds. These chemical substances are characterized by containing at least one heteroatom (such as nitrogen, oxygen, sulfur, phosphorus) within a cyclic structure or by featuring organo-inorganic frameworks. Such compounds are widely used in pharmaceuticals, agrochemicals, dyes, and various industrial chemical processes.
This heading includes compounds that are either derivatives of heterocyclic rings or complexes involving organic groups bonded to inorganic elements, excluding those classified under other specific chemical headings.
Code Hierarchy
- Section VI: Organic Chemicals (Chapters 28-38)
- Chapter 29: Organic Chemicals
- Heading 2981: Organo-inorganic compounds; heterocyclic compounds.
- US HTS Code (10-digit):
2981.XX.XXXX— The last digits specify precise chemical structures or derivative types.
Detailed Breakdown of Subheadings
While there are no sub-codes listed in the provided database for 2981, the heading is generally subdivided by chemical class, degree of substitution, and functional groups attached to the core heterocyclic or organo-inorganic structure. These may include but are not limited to:
| HS/HTS Code | Description | Examples & Notes |
|---|---|---|
| 2981.10 | Organo-inorganic compounds | Compounds containing organic groups bonded to inorganic elements such as silicon, boron, or phosphorus. |
2981.10.0000 |
Specific organo-inorganic compounds including silanes, boranes, and phosphonic derivatives. | |
| 2981.20 | Heterocyclic compounds with nitrogen atoms only | Includes pyridine, pyrrole, and related nitrogen heterocycles widely used as intermediates in pharmaceuticals. |
2981.20.1000 |
Pyridine and derivatives | |
2981.20.9000 |
Other nitrogen heterocyclic compounds | |
| 2981.30 | Heterocyclic compounds containing oxygen or sulfur atoms | Includes furan, thiophene, and their derivatives used in chemical syntheses and materials science. |
2981.30.0000 |
Oxygen and sulfur heterocyclic compounds | |
| 2981.40 | Miscellaneous heterocyclic compounds | Compounds with heteroatoms such as phosphorus, selenium, or mixed heteroatoms. |
2981.40.0000 |
Other heterocyclic compounds not elsewhere specified |
What is NOT Classified Here?
To ensure correct classification, the following are excluded from this heading:
- Simple organic chemicals that do not contain heterocyclic rings or organo-inorganic bonds are classified under other headings in Chapter 29.
- Pharmaceutical preparations containing these compounds in formulated form fall under Chapter 30.
- Polymers and macromolecular compounds involving these heterocyclic units are classified in Chapter 39 or 40.
Notes
- Regulatory Considerations: Many compounds under HTS 2981 are subject to chemical import regulations due to their potential use in controlled substances or industrial chemicals.
- Duty Rates: Duty rates vary based on the exact chemical composition and intended use; consulting current USHTS tariff schedules is essential.
- Customs Documentation: Detailed chemical composition and safety data sheets are typically required for clearance.
Declaration Example
Product: A shipment of pyridine derivatives used as pharmaceutical intermediates.US HTS Code:
2981.20.1000(Pyridine and derivatives)Unit of Quantity: Kilogram (kg)
General Duty Rate: Check current USHTS (Often subject to specific chemical tariffs)
Additional Requirements: Chemical safety documentation and regulatory compliance certificates.
Related HTS Codes
- HTS 2901: Acyclic hydrocarbons
- HTS 2902: Cyclic hydrocarbons other than aromatic
- HTS 2933: Heterocyclic compounds with nitrogen-containing rings other than 2981
- HTS 3003: Medicaments containing these compounds
