4-Chlorobenzonitrile
Also known as: p-Chlorobenzonitrile, PCBN, 4-Cyanochlorobenzene, 1-Chloro-4-cyanobenzene, p-Chlorbenzonitrile
4-Chlorobenzonitrile (CAS 623-03-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H4ClN and a molecular weight of 137.566 g/mol. Key properties include a melting point of 90-93 °C(lit.), a boiling point of 223.0±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 86.2±14.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H332 — Harmful if inhaled and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 623-03-0
- Jingsj CID
- J-42379-5
- Molecular Formula
- C7H4ClN
- Molecular Weight
- 137.566 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 90-93 °C(lit.) |
|---|---|
| Boiling Point | 223.0±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 86.2±14.8 °C |
| Exact Mass | 137.003220 |
| PSA | 23.79000 |
| LogP | 2.20 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.563 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2926909090 |
|---|---|
| Summary | HS: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 4-Chlorobenzonitrile?
The CAS number of 4-Chlorobenzonitrile is 623-03-0.
What are the molecular formula and molecular weight of 4-Chlorobenzonitrile?
4-Chlorobenzonitrile has molecular formula C7H4ClN and molecular weight 137.566 g/mol.
Is 4-Chlorobenzonitrile hazardous?
4-Chlorobenzonitrile has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H332 — Harmful if inhaled; H315 — Causes skin irritation.
What are the upstream and downstream products of 4-Chlorobenzonitrile?
For 4-Chlorobenzonitrile, Upstream Products: 4-Chlorobenzaldehyde oxime, 4-Chlorobenzyl alcohol, 4-Chlorobenzaldehyde; Downstream Products: 4-(pyridin-2-yl)benzonitrile, ethyl 3-(4-cyanophenyl)-3-oxopropanoate, 4'-Methyl-[1,1'-biphenyl]-4-carbonitrile.
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-Chlorobenzonitrile (CAS 623-03-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42379-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.