1-Isocyanatobutane
Also known as: Butyl isocyanate, n-Butyl isocyanate, Isocyanic acid butyl ester, 1-Butyl isocyanate, n-BIC, Butyl isocyanate, stab.
1-Isocyanatobutane (CAS 111-36-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H9NO and a molecular weight of 99.131 g/mol. Key properties include a melting point of 85.5℃, a boiling point of 115.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 17.8±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 111-36-4
- Jingsj CID
- J-14428-5
- Molecular Formula
- C5H9NO
- Molecular Weight
- 99.131 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 85.5℃ |
|---|---|
| Boiling Point | 115.0±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 17.8±0.0 °C |
| Exact Mass | 99.068413 |
| PSA | 29.43000 |
| LogP | 2.42 |
| Additional Property | 3 (vs air) |
| Vapor Pressure | 19.4±0.2 mmHg at 25°C |
| Refractive Index | 1.429 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H311 — Toxic in contact with skin
- H314 — Causes severe skin burns and eye damage
- H330 — Fatal if inhaled
- H334 — May cause allergy or asthma symptoms if inhaled
Customs & Trade Information
| HS Code | 2929109000 |
|---|---|
| Summary | 2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Isocyanatobutane?
The CAS number of 1-Isocyanatobutane is 111-36-4.
What are the molecular formula and molecular weight of 1-Isocyanatobutane?
1-Isocyanatobutane has molecular formula C5H9NO and molecular weight 99.131 g/mol.
Is 1-Isocyanatobutane hazardous?
1-Isocyanatobutane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H311 — Toxic in contact with skin.
What are the upstream and downstream products of 1-Isocyanatobutane?
For 1-Isocyanatobutane, Upstream Products: Carbon dioxide, Butylamine, Ethyl butylcarbamate; Downstream Products: Carbutamide, 1,3-Dibutylurea, 2,3-DIMETHYL-1,3-BUTADIENE.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Isocyanatobutane (CAS 111-36-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14428-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.