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4-Fluoro-3-(trifluoromethyl)phenyl isocyanate

异氰酸-4-氟-3-(三氟甲基)苯酯

Also known as: 1-fluoro-4-isocyanato-2-(trifluoromethyl)benzene, 2-Fluoro-5-isocyanatobenzotrifluoride, 4-FLUOR-3-(TRIFLUORMETHYL)-PHENYLISOCYAN, Benzene, 1-fluoro-4-isocyanato-2-(trifluoromethyl)-, MFCD00673072, TIMTEC-BB SBB006632

4-Fluoro-3-(trifluoromethyl)phenyl isocyanate (CAS 139057-86-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H3F4NO and a molecular weight of 205.109 g/mol. It is also known as 1-fluoro-4-isocyanato-2-(trifluoromethyl)benzene, 2-Fluoro-5-isocyanatobenzotrifluoride and 4-FLUOR-3-(TRIFLUORMETHYL)-PHENYLISOCYAN. Key properties include a boiling point of 181.5±40.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 68.9±17.0 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
139057-86-6
Jingsj CID
J-36676-8
Molecular Formula
C8H3F4NO
Chinese Name
异氰酸-4-氟-3-(三氟甲基)苯酯
Molecular Weight
205.109 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point181.5±40.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point68.9±17.0 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 4-Fluoro-3-(trifluoromethyl)phenyl isocyanate?

The CAS number of 4-Fluoro-3-(trifluoromethyl)phenyl isocyanate is 139057-86-6.

What are the molecular formula and molecular weight of 4-Fluoro-3-(trifluoromethyl)phenyl isocyanate?

4-Fluoro-3-(trifluoromethyl)phenyl isocyanate has molecular formula C8H3F4NO and molecular weight 205.109 g/mol.

Is 4-Fluoro-3-(trifluoromethyl)phenyl isocyanate hazardous?

4-Fluoro-3-(trifluoromethyl)phenyl isocyanate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "4-Fluoro-3-(trifluoromethyl)phenyl isocyanate (CAS 139057-86-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36676-8 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.