4,4'-Bis(dimethylamino)thiobenzophenone
Synonym(s):4,4′-Bis(dimethylamino)thiobenzophenone;N,N,N′,N′-Tetramethyl-4,4′-diaminothiobenzophenone, Michler thioketone
- CAS NO.：1226-46-6
- Empirical Formula: C17H20N2S
- Molecular Weight: 284.42
- MDL number: MFCD00040477
- EINECS: 214-962-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 00:05:43
What is 4,4'-Bis(dimethylamino)thiobenzophenone?
Chemical properties
Purple crystal
Purification Methods
Purify the thioketone by recrystallisation from hot EtOH or by trituration with a small volume of CHCl3, followed by filtration and washing with hot EtOH [Terbell & Wystrade J Phys Chem 68 2110 1964]. Also it recrystallises from CHCl3/ MeOH. [Beilstein 14 H 101, 14 I 395, 14 II 60.]
Properties of 4,4'-Bis(dimethylamino)thiobenzophenone
| Melting point: | 202-206 °C(lit.) |
| Boiling point: | 430.0±55.0 °C(Predicted) |
| Density | 1.230 g/cm3 |
| storage temp. | Store below +30°C. |
| form | powder to crystal |
| pka | 3.05±0.24(Predicted) |
| color | Red to Dark red to Dark purple |
| CAS DataBase Reference | 1226-46-6(CAS DataBase Reference) |
| NIST Chemistry Reference | 4,4'-Bis(dimethylamino)thio benzophenone(1226-46-6) |
| EPA Substance Registry System | Methanethione, bis[4-(dimethylamino)phenyl]- (1226-46-6) |
Safety information for 4,4'-Bis(dimethylamino)thiobenzophenone
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 4,4'-Bis(dimethylamino)thiobenzophenone
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