Allyl isocyanate
Also known as: 3-isocyanato-1-propene, 3-isocyanatoprop-1-ene, 1-Propene, 3-isocyanato-, isocyanic acid allyl ester
Allyl isocyanate (CAS 1476-23-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H5NO and a molecular weight of 83.089 g/mol. Key properties include a boiling point of 88.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 43.3±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H301 — Toxic 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.
- 1476-23-9
- Jingsj CID
- J-43964-5
- Molecular Formula
- C4H5NO
- Molecular Weight
- 83.089 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 88.0±0.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 43.3±0.0 °C |
| Exact Mass | 83.037117 |
| PSA | 29.43000 |
| LogP | 1.66 |
| Appearance | yellow |
| Vapor Pressure | 62.3±0.1 mmHg at 25°C |
| Refractive Index | 1.421 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H301 — Toxic if swallowed
- H311 — Toxic in contact with skin
- H331 — Toxic if inhaled
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- 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 Allyl isocyanate?
The CAS number of Allyl isocyanate is 1476-23-9.
What are the molecular formula and molecular weight of Allyl isocyanate?
Allyl isocyanate has molecular formula C4H5NO and molecular weight 83.089 g/mol.
Is Allyl isocyanate hazardous?
Allyl isocyanate has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.
What are the upstream and downstream products of Allyl isocyanate?
For Allyl isocyanate, Upstream Products: Allylurea, Diphosgene, Triallyl isocyanurate; Downstream Products: benzyl allylcarbamate, tributyltin isocyanate, Allylurea.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Allyl isocyanate (CAS 1476-23-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43964-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.