4'-Bromoacetophenone

Also known as: 1-(4-Bromophenyl)ethanone, p-Bromoacetophenone, 4-Bromoacetophenone, Methyl 4-bromophenyl ketone, p-Acetylbromobenzene, 1-Acetyl-4-bromobenzene, Methyl p-bromophenyl ketone, para-Bromoacetophenone

4'-Bromoacetophenone (CAS 99-90-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H7BrO and a molecular weight of 199.04 g/mol. Key properties include a melting point of 108-110 °C(lit.), a boiling point of 259.9±23.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 94.3±9.9 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 99-90-1
Jingsj CID: J-38590-0
Molecular Formula: C₈H₇BrO
Molecular Weight: 199.04 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	108-110 °C(lit.)
Boiling Point	259.9±23.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	94.3±9.9 °C
Exact Mass	197.968018
PSA	17.07000
LogP	2.43
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.554
Additional Property	methanol: 0.1 g/mL, clear

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger

H302 — Harmful if swallowed
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H334 — May cause allergy or asthma symptoms 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 4'-Bromoacetophenone?

The CAS number of 4'-Bromoacetophenone is 99-90-1.

What are the molecular formula and molecular weight of 4'-Bromoacetophenone?

4'-Bromoacetophenone has molecular formula C8H7BrO and molecular weight 199.04 g/mol.

Is 4'-Bromoacetophenone hazardous?

4'-Bromoacetophenone has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 4'-Bromoacetophenone?

For 4'-Bromoacetophenone, Upstream Products: 1-(4-Bromophenyl)ethanol, 4-Acetylphenylboronic acid, 4-Bromophenylacetylene; Downstream Products: 1-(3,4-Dibromophenyl)ethanone, 4'-Heptylacetophenone.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4'-Bromoacetophenone (CAS 99-90-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38590-0 (accessed 2026-11-09).

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