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4-Acetylphenyl isocyanate

Also known as: 1-(4-Isocyanatophenyl)ethanone, 4-Isocyanatoacetophenone, 1-Acetyl-4-isocyanatobenzene, p-Acetylphenyl isocyanate, NSC 223088

4-Acetylphenyl isocyanate (CAS 49647-20-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H7NO2 and a molecular weight of 161.15700 g/mol. Key properties include a melting point of 35-37 °C(lit.), a boiling point of 139 °C14 mm Hg(lit.), a density of 1.09g/cm3 and a flash point of >110.0 °C. It is classified under GHS with signal word Warning 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 Nov 3, 2026.

CAS No.
49647-20-3
Jingsj CID
J-5029-3
Molecular Formula
C9H7NO2
Molecular Weight
161.15700 g/mol
Category
Organic Acids
Last updated
11/3/2026
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Physicochemical Properties

Melting Point35-37 °C(lit.)
Boiling Point139 °C14 mm Hg(lit.)
Density1.09g/cm3
Flash Point>110.0 °C
Exact Mass161.04800
PSA46.50000
LogP1.85650
Refractive Index1.537

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H332 — Harmful 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 4-Acetylphenyl isocyanate?

The CAS number of 4-Acetylphenyl isocyanate is 49647-20-3.

What are the molecular formula and molecular weight of 4-Acetylphenyl isocyanate?

4-Acetylphenyl isocyanate has molecular formula C9H7NO2 and molecular weight 161.15700 g/mol.

Is 4-Acetylphenyl isocyanate hazardous?

4-Acetylphenyl isocyanate has GHS signal word Warning 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-Acetylphenyl isocyanate?

For 4-Acetylphenyl isocyanate, Upstream Products: Sodium cyanate, 1-(4-Chlorophenyl)ethanone, 4-Aminoacetophenone; Downstream Products: tert-Butyl (4-acetylphenyl)carbamate.

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

Last updated:

How to cite: Jingsj. "4-Acetylphenyl isocyanate (CAS 49647-20-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5029-3 (accessed 2026-11-09).

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