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Butyl isocyanate

CAS 111-36-4

Companies reported imports and no US production of this chemical to EPA for 2023.

Molecular structure of 111-36-4
US productionZero
Import value, 2024$171M
Import volume264.0K lb
Import dependency100%
Top sourceHungary 35%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Butyl isocyanate · US import value by year
$93M2013$284M2021$171M2024$99M2025

2013: $93M · Peak 2021: $284M · 2024: $171M · 2025: $99M

Where It Comes From

Customs basis: HS 292910 · basket

EPA reports by year
2023
US production Zero · Imports 264.0K lb
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 292910, which covers 57 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
HU 35%HungaryDE 20%GermanyIT 15%ItalyCN 8%ChinaES 7%Spain
Domestic parents -- activity not disclosed (1)
Vandemark Chemical

Why It Matters

Sectors
AgriculturePaints & Coatings
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

  • •Catalyst in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Catalyst in Paint and Coating Manufacturing (100%)Processing as a reactant

Vendor Pricing

$92.90/gA2B Chem LLC (2 weeks)
CountryUnited States
Pack$1858.00 / 20 g
PurityNot recorded
Vendors2 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

1 more vendor
VendorCountry$/gPackPurity
AA BLOCKS (1 week)United States$93.405 g—

Chemical Identity

CAS111-36-4
PubChem CID8110
DTXSIDDTXSID6026872
FormulaC5H9NO
Mol. Weight99.13 g/mol
SMILESCCCCN=C=O

Data Sources

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Brief citations

Butyl isocyanate (CAS 111-36-4) https://chemicalindependence.com/chemical/111-36-4/ EPA CompTox (DSSTox): DTXSID6026872. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6026872 PubChem: 8110. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8110 EPA Chemical Data Reporting: 111-36-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 111-36-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292910 for CAS 111-36-4. Reporting year: 2024. https://usatrade.census.gov/