Fumaronitrile
Fumaronitrile (NC-CH=CH-CN) is a trans-dicyanoethylene used in Diels-Alder reactions and dyes. HTS 2926.90.5050 for unsaturated nitrile-function compounds under Chapter 29 definitions. Highly electron-deficient dienophile.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If amide hydrolysis products
Conversion to dicarboxamide changes function group heading.
If dyestuff intermediates with colorants
Synthetic coloring matter excludes from Chapter 29 per note.
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Import Tips & Compliance
• Sublimation risk; use sealed containers with desiccants
• Trans isomer confirmation via IR spectroscopy
• Toxicity higher than mononitriles; enhanced PPE declarations
Related Products under HTS 2926.90.50.50
Acrylonitrile
Acrylonitrile is a colorless liquid organic compound with the formula CH2=CHCN, featuring a nitrile functional group directly attached to a vinyl group. It falls under HTS 2926.90.5050 as a nitrile-function compound not specifically covered elsewhere in heading 2926. Primarily used in the production of synthetic fibers, plastics, and rubbers like acrylics and nitrile rubber.
Adiponitrile
Adiponitrile (NC(CH2)4CN) is a di-nitrile compound used primarily in nylon-6,6 production via hexamethylenediamine. Classified under HTS 2926.90.5050 as an other nitrile-function compound in Chapter 29 for separate chemically defined organics. It is a key intermediate in synthetic polymer manufacturing.
Benzonitrile
Benzonitrile (C6H5CN) is an aromatic nitrile serving as a solvent and intermediate in benzoguanamine and rubber accelerator synthesis. It qualifies for HTS 2926.90.5050 as a nitrile-function compound under Chapter 29, being a separate chemically defined organic. Widely used in pharmaceutical and chemical industries.
Allyl Cyanide (3-Butenenitrile)
3-Butenenitrile (CH2=CH-CH2-CN) is an unsaturated aliphatic nitrile used in organic synthesis and polymer chemistry. Falls under HTS 2926.90.5050 as other nitrile-function compounds per Chapter 29 definitions for chemically defined organics. Its reactivity stems from both alkene and nitrile groups.
Ethyl Cyanoacetate
Ethyl cyanoacetate (NC-CH2-COOC2H5) is a versatile nitrile ester used in malonic ester synthesis and pharmaceutical intermediates. Classified in HTS 2926.90.5050 following Chapter 29 note on esters, prioritizing the nitrile function over carboxylic acid derivative. Key reagent in organic multi-component reactions.
Mandelonitrile
Mandelonitrile (C6H5CH(OH)CN) is an alpha-hydroxy nitrile intermediate from benzaldehyde cyanohydrin reaction, used in cyanohydrin synthesis. HTS 2926.90.5050 applies as other nitrile-function compound, chemically defined per Chapter 29. Precursor for pharmaceuticals and fine chemicals.