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3-Methoxybenzyl isocyanate

Also known as: 1-(Isocyanatomethyl)-3-methoxybenzene, 1-(isocyanatomethyl)-3-(methyloxy)benzene, 1-isocyanatomethyl-3-methoxybenzene, Benzene, 1-(isocyanatomethyl)-3-methoxy-, MFCD03427184, meta-methoxybenzyl isocyanate

3-Methoxybenzyl isocyanate (CAS 57198-56-8) 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 163.17300 g/mol. Key properties include a boiling point of 249.4ºC at 760 mmHg, a density of 1.136 g/mL at 25ºC(lit.) and a flash point of 26.7 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
57198-56-8
Jingsj CID
J-1400432-1
Molecular Formula
C9H9NO2
Molecular Weight
163.17300 g/mol
Category
Organic Acids
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point249.4ºC at 760 mmHg
Density1.136 g/mL at 25ºC(lit.)
Flash Point26.7 °C
Exact Mass163.06300
PSA38.66000
LogP1.53100
Refractive Indexn20/D 1.5320(lit.)

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger
  • H226 — Flammable liquid and vapour
  • 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 Code2929109000
Summary2929109000. 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 3-Methoxybenzyl isocyanate?

The CAS number of 3-Methoxybenzyl isocyanate is 57198-56-8.

What are the molecular formula and molecular weight of 3-Methoxybenzyl isocyanate?

3-Methoxybenzyl isocyanate has molecular formula C9H9NO2 and molecular weight 163.17300 g/mol.

Is 3-Methoxybenzyl isocyanate hazardous?

3-Methoxybenzyl isocyanate has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.

What are the upstream and downstream products of 3-Methoxybenzyl isocyanate?

For 3-Methoxybenzyl isocyanate, Upstream Products: 3-Methoxybenzylamine, Bis(trichloromethyl) carbonate, Carbon dioxide.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-Methoxybenzyl isocyanate (CAS 57198-56-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1400432-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.