4,4'-双(二甲氨基)二苯甲酮

Description

4,4'-Bis(dimethylamino)benzophenone · CAS 90-94-8 · C17H20N2O. UNII 3Z2SN6B347. Melting Point: 342 °F (NTP, 1992); Melting Point: 172 °C; Melting Point: 179 °C.

Identification

CAS Registry Number	90-94-8
PubChem CID	7031
Molecular formula	C17H20N2O
IUPAC name	bis[4-(dimethylamino)phenyl]methanone
UNII (FDA)	3Z2SN6B347

Computed Descriptors

Molecular Weight	268.35
XLogP3	3.9
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	4
Exact Mass	268.157563266
Monoisotopic Mass	268.157563266
Topological Polar Surface Area	23.6
Heavy Atom Count	20
Formal Charge	0

Physical & Chemical Properties

Melting Point	342 °F (NTP, 1992)
Melting Point	172 °C
Melting Point	179 °C
Flash Point	220 °C
Vapor Pressure	0.00000107 [mmHg]
LogP	3.87

Physical description & handling notes

• Michler's ketone appears as white to greenish crystalline leaflets or blue powder. (NTP, 1992)
• White to greenish solid; [Merck Index] May also be in the form of a blue solid; [CHEMINFO] Light blue powder; [MSDSonline]
• WHITE TO GREENISH LEAFLETS
• LEAF IN ALCOHOL, NEEDLES IN BENZENE
• greater than 680 °F at 760 mmHg (decomposes) (NTP, 1992)
• ABOVE 360 °C WITH DECOMP

GHS Hazard Classification

Reported hazard statements	H318, H341, H350, H351

Documented Uses

• Used to make dyes and pigments; [Merck Index] Used to dye paper, textiles, and leather; Also used in printing inks and photosensitizer formulations; [CHEMINFO]
• Pulp and Paper Processing [Category: Industry]
• Leather Tanning and Processing [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• SYNTHESIS OF AURAMINE DERIVATIVES
• Used in the manufacture of at least 13 dyes and pigments: C.I. (Colour Index) Acid Blue 34; C.I. Acid Blue 86; C.I. Acid Blue 88; C.I. Acid Violet 15; C.I. Acid Violet 38; Acid Violet 2B; C.I. Basic Orange 23; C.I. Basic Violet 3; C.I. Basic Yellow 2; Ceres Blue I; Fanal Blue 3B supra; C.I. Solvent Violet 9; and C.I. Solvent Yellow 34.

Synonyms

Michler's ketone; 90-94-8; 4,4'-BIS(DIMETHYLAMINO)BENZOPHENONE; Bis(4-(dimethylamino)phenyl)methanone; bis[4-(dimethylamino)phenyl]methanone; Michler ketone; p,p'-Michler's ketone; Tetramethyldiaminobenzophenone; NCI-C02006; p,p'-Bis(dimethylamino)benzophenone; Methanone, bis[4-(dimethylamino)phenyl]-; DTXSID2020894; Benzophenone, 4,4'-bis(dimethylamino)-; NSC 9602; N,N,N',N'-Tetramethyl-4,4'-diaminobenzophenone; p,p'-Bis(N,N-dimethylamino)benzophenone

Frequently Asked Questions

What are the CAS number and molecular formula of 4,4'-Bis(dimethylamino)benzophenone?

CAS 90-94-8; molecular formula C17H20N2O; molecular weight — g/mol.

What other names is 4,4'-Bis(dimethylamino)benzophenone known by?

Michler's ketone, 90-94-8, 4,4'-BIS(DIMETHYLAMINO)BENZOPHENONE, Bis(4-(dimethylamino)phenyl)methanone, bis[4-(dimethylamino)phenyl]methanone, Michler ketone.

Is 4,4'-Bis(dimethylamino)benzophenone classified as hazardous?

Hazard statements reported: H318, H341, H350, H351.

What are the key physical properties of 4,4'-Bis(dimethylamino)benzophenone?

Melting Point: 342 °F (NTP, 1992); Melting Point: 172 °C; Melting Point: 179 °C; Flash Point: 220 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.