4,4'-Bis(diethylamino)benzophenone

Also known as: Michler's ethyl ketone, Ethyl Michler's ketone, Bis[4-(diethylamino)phenyl]methanone, Bis[4-(diethylamino)phenyl] ketone, 4,4'-Carbonylbis(N,N-diethylaniline), Methanone, bis[4-(diethylamino)phenyl]-

4,4'-Bis(diethylamino)benzophenone (CAS 90-93-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C21H28N2O and a molecular weight of 324.460 g/mol. Key properties include a melting point of 89-92 °C(lit.), a boiling point of 475.7±30.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 193.6±16.9 °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.: 90-93-7
Jingsj CID: J-1114661-0
Molecular Formula: C₂₁H₂₈N₂O
Molecular Weight: 324.460 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	89-92 °C(lit.)
Boiling Point	475.7±30.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	193.6±16.9 °C
Exact Mass	324.220154
PSA	23.55000
LogP	5.99
Vapor Pressure	0.0±1.2 mmHg at 25°C
Refractive Index	1.581
Additional Property	insoluble

GHS Safety & Compliance

Irritant / Environmental HazardSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation
H400 — Very toxic to aquatic life

Customs & Trade Information

HS Code	2922399090
Summary	2922399090 other amino-aldehydes, amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function; salts thereof 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 4,4'-Bis(diethylamino)benzophenone?

The CAS number of 4,4'-Bis(diethylamino)benzophenone is 90-93-7.

What are the molecular formula and molecular weight of 4,4'-Bis(diethylamino)benzophenone?

4,4'-Bis(diethylamino)benzophenone has molecular formula C21H28N2O and molecular weight 324.460 g/mol.

Is 4,4'-Bis(diethylamino)benzophenone hazardous?

4,4'-Bis(diethylamino)benzophenone 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 4,4'-Bis(diethylamino)benzophenone?

For 4,4'-Bis(diethylamino)benzophenone, Upstream Products: N,N-Diethylaniline; Downstream Products: Bis(4-diethylaminophenyl)methanol, Ethyl Violet, 4,4'-Methylenebis(N,N-diethylaniline).

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. "4,4'-Bis(diethylamino)benzophenone (CAS 90-93-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1114661-0 (accessed 2026-11-06).

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