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4-Fluorophenyl isothiocyanate

Also known as: 1-Fluoro-4-isothiocyanatobenzene, p-Fluorophenyl isothiocyanate, 4-Fluorobenzene isothiocyanate, Isothiocyanic acid 4-fluorophenyl ester, Isothiocyanic acid, p-fluorophenyl ester

4-Fluorophenyl isothiocyanate (CAS 1544-68-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4FNS and a molecular weight of 153.177 g/mol. Key properties include a melting point of 24-26 °C(lit.), a boiling point of 228.8±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 89.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage, H317 — May cause an allergic skin reaction and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1544-68-9
Jingsj CID
J-44678-6
Molecular Formula
C7H4FNS
Molecular Weight
153.177 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point24-26 °C(lit.)
Boiling Point228.8±13.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point89.4±0.0 °C
Exact Mass153.004852
PSA44.45000
LogP3.28
Vapor Pressure0.1±0.4 mmHg at 25°C
Refractive Index1.553

GHS Safety & Compliance

Corrosion / Health HazardSignal word: Danger
  • H314 — Causes severe skin burns and eye damage
  • H317 — May cause an allergic skin reaction
  • H334 — May cause allergy or asthma symptoms if inhaled

Customs & Trade Information

HS Code2930909090
Summary2930909090. other organo-sulphur compounds. 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-Fluorophenyl isothiocyanate?

The CAS number of 4-Fluorophenyl isothiocyanate is 1544-68-9.

What are the molecular formula and molecular weight of 4-Fluorophenyl isothiocyanate?

4-Fluorophenyl isothiocyanate has molecular formula C7H4FNS and molecular weight 153.177 g/mol.

Is 4-Fluorophenyl isothiocyanate hazardous?

4-Fluorophenyl isothiocyanate has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction; H334 — May cause allergy or asthma symptoms if inhaled.

What are the upstream and downstream products of 4-Fluorophenyl isothiocyanate?

For 4-Fluorophenyl isothiocyanate, Upstream Products: Carbon disulphide, 4-Fluoroaniline, Thiophosgene; Downstream Products: 4-(4-fluorophenyl)-3-thiosemicarbazide, 3-(4-Fluorophenyl)-2-thioxo-1,3-thiazolidin-4-one, 2-Amino-6-fluorobenzothiazole.

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-Fluorophenyl isothiocyanate (CAS 1544-68-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44678-6 (accessed 2026-11-09).

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