N-Butyl Isocyanate
N-Butyl isocyanate (CAS 111-36-4) is a chemically defined aliphatic isocyanate compound with the formula CH3(CH2)3NCO, used primarily as a reactive intermediate in organic synthesis for polyurethane production and pharmaceutical intermediates. It falls under HTS 2929.10.2700 as a specific isocyanate with 'other nitrogen function' per Chapter 29 note (a), distinct from excluded products like ethyl alcohol or enzymes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not one of the five specifically named isocyanates
HTS 2929.10.2700 is limited to the exact five listed compounds; other isocyanates like phenyl isocyanate go to the residual subheading.
If imported as a solution in solvent exceeding 80% concentration
Per Chapter 29 note (e), solutions for safety/transport remain classified here, but mixtures rendered suitable for specific use may shift to Chapter 38 mixtures.
If pre-reacted into polyisocyanate prepolymer
Finished polyurethane prepolymers are polymers of Chapter 39, not the monomeric isocyanates of Chapter 29.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 1
• Provide Safety Data Sheets (SDS) and CAS number (111-36-4) for customs verification; 2
• Ensure UN-approved packaging for Hazard Class 6.1 toxic liquids; 3
• Avoid misclassification as polyurethane prepolymers which fall under Chapter 39
Related Products under HTS 2929.10.27.00
Cyclohexyl Isocyanate
Cyclohexyl isocyanate (CAS 3173-53-3) is a cycloaliphatic isocyanate (C6H11NCO) serving as a building block for specialty polyurethanes, agrochemicals, and pharmaceutical synthesis. Classified under HTS 2929.10.2700 as one of the specifically enumerated isocyanates with nitrogen function, meeting Chapter 29's criteria for separate chemically defined organic compounds.
1-Isocyanato-3-(Trifluoromethyl)benzene
1-Isocyanato-3-(trifluoromethyl)benzene (CAS 329-98-6), also known as m-trifluoromethylphenyl isocyanate, is an aromatic isocyanate used in fluorinated polymer synthesis and as a reagent in medicinal chemistry. It qualifies for HTS 2929.10.2700 as a named compound with 'other nitrogen function' isocyanate group, explicitly listed and chemically defined per Chapter notes.
1,5-Naphthalene Diisocyanate
1,5-Naphthalene diisocyanate (CAS 3173-72-6) is a polycyclic aromatic diisocyanate used in high-performance polyurethane elastomers and coatings requiring thermal stability. It is specifically named in HTS 2929.10.2700 as a diisocyanate compound with other nitrogen function, fitting Chapter 29's organic compound definitions.
Octadecyl Isocyanate
Octadecyl isocyanate (CAS 112-95-8), a long-chain C18 aliphatic isocyanate, functions as a surface modification agent, lubricant additive, and reactive diluent in polymer formulations. Covered by HTS 2929.10.2700 as an explicitly listed isocyanate with nitrogen function, qualifying as a separate chemically defined compound under Chapter 29.
N-Butyl Isocyanate 98% Stabilized
N-Butyl isocyanate stabilized with 0.05% dibutyltin dilaurate (CAS 111-36-4) prevents polymerization during storage and transport. Remains classified under HTS 2929.10.2700 per Chapter 29 note (f) as the isocyanate retains its chemical identity with necessary stabilizer addition.
1,5-Naphthalene Diisocyanate Technical Grade
Technical grade 1,5-naphthalene diisocyanate (95% purity) used in industrial polyurethane resin manufacturing. HTS 2929.10.2700 applies as it remains a chemically defined isocyanate compound despite minor impurities, per Chapter 29 scope for organic compounds.