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4-Fluoro-1,2-phenylenediamine

Also known as: 1,2-Diamino-4-fluorobenzene, 3,4-Diaminofluorobenzene, 3,4-Diamino-1-fluorobenzene, 4-Fluoro-1,2-benzenediamine, 4-Fluorobenzene-1,2-diamine, 4-Fluoro-o-phenylenediamine, 1,2-Benzenediamine, 4-fluoro-, 2-Amino-4-fluoroaniline, 4-FLUORO-1,2-DIAMINOBENZENE, 4-FLUORO-1,2-PHENYLENEDIAMINE, 4-FLUORO-BENZENE-1,2-DIAMINE, 4-FLUORO-O-PHENYLENEDIAMINE

4-Fluoro-1,2-phenylenediamine (CAS 367-31-7) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C6H7FN2 and a molecular weight of 126.132 g/mol. Key properties include a melting point of 94-98 °C, a boiling point of 266.1±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 118.0±12.5 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
367-31-7
Jingsj CID
J-36834-3
Molecular Formula
C6H7FN2
Molecular Weight
126.132 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point94-98 °C
Boiling Point266.1±20.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point118.0±12.5 °C
Exact Mass126.059326
PSA52.04000
LogP0.66
Appearancedeep brown
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.625
Storage ConditionsRoom temperature.

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2921590090
Summary2921590090. other aromatic polyamines and their derivatives; salts thereof. 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-Fluoro-1,2-phenylenediamine?

The CAS number of 4-Fluoro-1,2-phenylenediamine is 367-31-7.

What are the molecular formula and molecular weight of 4-Fluoro-1,2-phenylenediamine?

4-Fluoro-1,2-phenylenediamine has molecular formula C6H7FN2 and molecular weight 126.132 g/mol.

Is 4-Fluoro-1,2-phenylenediamine hazardous?

4-Fluoro-1,2-phenylenediamine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 4-Fluoro-1,2-phenylenediamine?

For 4-Fluoro-1,2-phenylenediamine, Upstream Products: 5-Fluoro-2-nitroaniline, 4-Fluoro-2-nitroaniline, Water; Downstream Products: 6-Fluoroquinoxalin-2(1H)-one, 5-Fluoro-1H-benzo[d]imidazole-2(3H)-thione, Benzimidazole.

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-Fluoro-1,2-phenylenediamine (CAS 367-31-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36834-3 (accessed 2026-11-09).

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