4-Methoxybenzyl isocyanate
4-甲氧苄基异氰酸酯
Also known as: p-Methoxybenzyl isocyanate, 1-(Isocyanatomethyl)-4-methoxybenzene, 4-(Isocyanatomethyl)phenyl methyl ether, Benzene, 1-(isocyanatomethyl)-4-methoxy-, Isocyanic acid, p-methoxybenzyl-, 4-METHOXYBENZYL ISOCYANATE 98%, 4-Methoxybenzyl isocyanate,99%, MFCD00673064
4-Methoxybenzyl isocyanate (CAS 56651-60-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H9NO2 and a molecular weight of 163.173 g/mol. It is also known as p-Methoxybenzyl isocyanate, 1-(Isocyanatomethyl)-4-methoxybenzene and 4-(Isocyanatomethyl)phenyl methyl ether. Key properties include a boiling point of 249.9±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 112.6±17.1 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 56651-60-6
- Jingsj CID
- J-33978-0
- Molecular Formula
- C9H9NO2
- Chinese Name
- 4-甲氧苄基异氰酸酯
- Molecular Weight
- 163.173 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 249.9±23.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 112.6±17.1 °C |
| Exact Mass | 163.063324 |
| PSA | 38.66000 |
| LogP | 2.52 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.507 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H332 — Harmful if inhaled
- H334 — May cause allergy or asthma symptoms if inhaled
- H335 — May cause respiratory irritation
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 4-Methoxybenzyl isocyanate?
The CAS number of 4-Methoxybenzyl isocyanate is 56651-60-6.
What are the molecular formula and molecular weight of 4-Methoxybenzyl isocyanate?
4-Methoxybenzyl isocyanate has molecular formula C9H9NO2 and molecular weight 163.173 g/mol.
Is 4-Methoxybenzyl isocyanate hazardous?
4-Methoxybenzyl isocyanate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H315 — Causes skin irritation.
What are the upstream and downstream products of 4-Methoxybenzyl isocyanate?
For 4-Methoxybenzyl isocyanate, Upstream Products: Bis(trichloromethyl) carbonate, 4-Methoxybenzylamine, 4-Methoxybenzyl alcohol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methoxybenzyl isocyanate (CAS 56651-60-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33978-0 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.