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Cyclopentanecarbonitrile

Also known as: Cyclopentyl cyanide, Cyanocyclopentane, Cyclopentanenitrile, 1-Cyanocyclopentane

Cyclopentanecarbonitrile (CAS 4254-02-8) is a compound in the Nitrogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C6H9N and a molecular weight of 95.142 g/mol. Key properties include a melting point of −76 °C(lit.), a boiling point of 184.1±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 55.6±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H301 — Toxic if swallowed and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4254-02-8
Jingsj CID
J-29373-4
Molecular Formula
C6H9N
Molecular Weight
95.142 g/mol
Category
Nitrogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point−76 °C(lit.)
Boiling Point184.1±0.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point55.6±0.0 °C
Exact Mass95.073502
PSA23.79000
LogP1.05
Vapor Pressure0.7±0.3 mmHg at 25°C
Refractive Index1.449

GHS Safety & Compliance

Flammable / Acute ToxicitySignal word: Danger
  • H226 — Flammable liquid and vapour
  • H301 — Toxic if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2926909090
SummaryHS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Cyclopentanecarbonitrile?

The CAS number of Cyclopentanecarbonitrile is 4254-02-8.

What are the molecular formula and molecular weight of Cyclopentanecarbonitrile?

Cyclopentanecarbonitrile has molecular formula C6H9N and molecular weight 95.142 g/mol.

Is Cyclopentanecarbonitrile hazardous?

Cyclopentanecarbonitrile has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H301 — Toxic if swallowed; H315 — Causes skin irritation.

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

Last updated:

How to cite: Jingsj. "Cyclopentanecarbonitrile (CAS 4254-02-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29373-4 (accessed 2026-11-06).

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