1-(4-Chlorophenyl)ethanone
Also known as: 4'-Chloroacetophenone, 4-Chloroacetophenone, p-Chloroacetophenone, 4-Acetylchlorobenzene, 4-Chlorophenyl methyl ketone, Methyl 4-chlorophenyl ketone, Ethanone, 1-(4-chlorophenyl)-, para-Chloroacetophenone
1-(4-Chlorophenyl)ethanone (CAS 99-91-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H7ClO and a molecular weight of 154.594 g/mol. Key properties include a melting point of 74-76 °C(lit.), a boiling point of 237.7±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 107.1±11.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 99-91-2
- Jingsj CID
- J-5403-5
- Molecular Formula
- C8H7ClO
- Molecular Weight
- 154.594 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 74-76 °C(lit.) |
|---|---|
| Boiling Point | 237.7±13.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 107.1±11.0 °C |
| Exact Mass | 154.018539 |
| PSA | 17.07000 |
| LogP | 2.35 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.532 |
| Additional Property | 111 mg/L (25 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H330 — Fatal if inhaled
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2914700090 |
|---|---|
| Summary | HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-(4-Chlorophenyl)ethanone?
The CAS number of 1-(4-Chlorophenyl)ethanone is 99-91-2.
What are the molecular formula and molecular weight of 1-(4-Chlorophenyl)ethanone?
1-(4-Chlorophenyl)ethanone has molecular formula C8H7ClO and molecular weight 154.594 g/mol.
Is 1-(4-Chlorophenyl)ethanone hazardous?
1-(4-Chlorophenyl)ethanone has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.
What are the upstream and downstream products of 1-(4-Chlorophenyl)ethanone?
For 1-(4-Chlorophenyl)ethanone, Upstream Products: 1-Chloro-4-ethynylbenzene, 4'-Bromoacetophenone, 4-Chloro-alpha-methylstyrene; Downstream Products: 1-(4-Hexylphenyl)ethanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(4-Chlorophenyl)ethanone (CAS 99-91-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5403-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.