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4-Chloro-2-fluorophenyl isocyanate

Also known as: 1-chloro-2-fluoro-4-isocyanatobenzene, 1-Chloro-2-fluoro-4-isocyanato-benzene, 3-Fluor-4-chlorphenylisocyanat, 4-CHLORO-2-FLUOROPHENYL ISOCYANATE 97, 4-Chloro-2-fluorophenyl isocyanate 97%, Benzene, 1-chloro-2-fluoro-4-isocyanato-, MFCD03701600

4-Chloro-2-fluorophenyl isocyanate (CAS 51163-28-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H3ClFNO and a molecular weight of 171.55600 g/mol. Key properties include a boiling point of 201-202ºC(lit.), a density of 1.354 g/mL at 25ºC(lit.) and a flash point of 85.0 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
51163-28-1
Jingsj CID
J-34352-2
Molecular Formula
C7H3ClFNO
Molecular Weight
171.55600 g/mol
Category
Organic Acids
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point201-202ºC(lit.)
Density1.354 g/mL at 25ºC(lit.)
Flash Point85.0 °C
Exact Mass170.98900
PSA29.43000
LogP2.44640
Refractive Indexn20/D 1.5400(lit.)

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • 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 4-Chloro-2-fluorophenyl isocyanate?

The CAS number of 4-Chloro-2-fluorophenyl isocyanate is 51163-28-1.

What are the molecular formula and molecular weight of 4-Chloro-2-fluorophenyl isocyanate?

4-Chloro-2-fluorophenyl isocyanate has molecular formula C7H3ClFNO and molecular weight 171.55600 g/mol.

Is 4-Chloro-2-fluorophenyl isocyanate hazardous?

4-Chloro-2-fluorophenyl isocyanate has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H334 — May cause allergy or asthma symptoms if inhaled.

What are the upstream and downstream products of 4-Chloro-2-fluorophenyl isocyanate?

For 4-Chloro-2-fluorophenyl isocyanate, Upstream Products: 4-Chloro-3-fluoroaniline, Bis(trichloromethyl) carbonate.

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-Chloro-2-fluorophenyl isocyanate (CAS 51163-28-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34352-2 (accessed 2026-11-09).

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