N-Chlorosuccinimide (NCS)
N-Chlorosuccinimide is a chemically defined cyclic imide derivative used as a chlorinating and oxidizing agent in organic synthesis. It falls under HTS 2925.19.70.00 as a specific imide compound listed in this subheading for carboxyimide-function compounds. Primarily employed in pharmaceutical and fine chemical manufacturing for selective chlorination reactions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as dilute solution for safety/transport
Solutions of chapter 29 products in solvents for safety/transport fall under heading 2934 per chapter note (e), if not rendered suitable for specific use.
If mixed with stabilizers exceeding chapter note limits
Mixtures with added stabilizers beyond what's necessary for preservation may classify as chemical preparations in chapter 38 rather than pure compounds.
If classified primarily by halogen function over imide
Halogenated derivatives might shift to earlier chapter 29 headings under numerical order rule if imide function not principal characteristic.
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Import Tips & Compliance
• Provide detailed chemical safety data sheets (MSDS) and ensure UN-approved packaging for hazardous oxidizers; verify purity certificates as impurities may affect classification; comply with TSCA registration for US chemical imports
Related Products under HTS 2925.19.70.00
N,N'-Ethylenebis(5,6-Dibromonorbornanedicarboximide)
This is a bis-imide compound featuring two dibromo-norbornane dicarboximide units linked by an ethylene bridge, explicitly named in HTS 2925.19.70.00. Used as a brominating agent and flame retardant intermediate in polymer chemistry. Qualifies as a derivative of imides under chapter 29 carboxyimide-function compounds.
99% Pure N-Chlorosuccinimide Powder
High-purity N-chlorosuccinimide in powdered form for laboratory and industrial synthesis, containing minor impurities but remains chemically defined. Specifically listed under HTS 2925.19.70.00 as an imide derivative not excluded by chapter notes on impurities. Common in alpha-chlorination of pharmaceuticals and natural product synthesis.
N-Chlorosuccinimide with Stabilizer Additive
N-Chlorosuccinimide formulated with minimal anticaking stabilizer for safe transport and storage, compliant with chapter note (f). Remains classified under HTS 2925.19.70.00 as the principal imide compound with necessary preservative. Used in bulk for continuous flow chlorination processes.
Research Grade N,N'-Ethylenebis-Dibromonorbornanedicarboximide
Laboratory-grade version of the named bis-imide compound for R&D in polymer flame retardants and bromination studies. Explicitly covered by HTS 2925.19.70.00 as a chemically defined imide derivative. Supplied in small quantities with purity >98%.