4,4'-Bis(dimethylamino)thiobenzophenone

Also known as: Thiomichler's ketone, Michler's thioketone, N,N,N',N'-Tetramethyl-4,4'-diaminothiobenzophenone, Bis[4-(dimethylamino)phenyl]methanethione, di[4-(dimethylamino)phenyl]methanethione, 4,4'-Bis(dimethylamino)thiobenzophenone, 4,4'-Carbonothioylbis(N,N-dimethylbenzenamine), Bis[4-(dimethylamino)phenyl] thioketone, Thiomichler's Ketone [Sensitive spectrophotometric reagent for Au, Ag, Hg and Pd], TMK

4,4'-Bis(dimethylamino)thiobenzophenone (CAS 1226-46-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C17H20N2S and a molecular weight of 284.419 g/mol. Key properties include a melting point of 202-206 °C(lit.), a boiling point of 430.0±55.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 213.8±31.5 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. It is listed by 2 suppliers, 1 of which publish reference prices, from 14.00 to 14.00 CNY per 5g. Record last updated Aug 21, 2026.

CAS No.

1226-46-6

Jingsj CID

J-1318307-3

Molecular Formula

C₁₇H₂₀N₂S

Molecular Weight

284.419 g/mol

Category

Ketones

Last updated

8/21/2026