Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4,4'-Bis(dimethylamino)benzophenone
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: 90-94-8
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

90-94-8

90-94-8 structure

Name: Michler's ketone
Chemical Name: 4,4'-Bis(dimethylamino)benzophenone
CAS Number: 90-94-8
Molecular Formula: C₁₇H₂₀N₂O
Molecular Weight: 268.353
Catalog: Organic raw materials Ketone compound
Create Date: 2018-04-10 08:00:00
Modify Date: 2026-07-01 14:18:33

Name	4,4'-Bis(dimethylamino)benzophenone
Synonyms	Bis-4,4'-(dimethylamino)-benzophenon (michlers keton) Michlers Ketone[4,4-Bis(dimethylamino)benzophenone] EINECS 202-027-5 p,p’-bis(n,n-dimethylamino)benzophenone 4,4'-di(Dimethylamino)benzophenone N,N,N',N'-TETRAMETHYL-4,4'-DIAMINOBENZOPHENONE p,p'-bis(Dimethylamino)benzophenone 4,4'-BIS(DIMETHYLAMINO)-BENZOPHENONE FOR Bis(4-(dimethylamino)phenyl)methanone N,N,N,N'-TETRAMETHYL-4,4'-DIAMINOBENZOPHENONE (2,3-diamino-4,5,6-trimethylphenyl)-(2-methylphenyl)methanone bis(p-(n,n-dimethylamino)phenyl)ketone ai3-22412 4,4’-bis(dimethylamino)-benzophenon Michler's Ketone N,N,N',N'-Tetramethyl-4,4'-diaminobenzophenone 4,4’-bis(n,n-dimethylamino)benzophenone bis[4-(dimethylamino)phenyl]-methanon 3,6-DIMETHYL-1,4-DIOXANE-2,5-DIONE (4,4''-BIS(DIMETHYLAMINO)BENZOPHENONE) nsc9602 p,p’-bis(dimethylamino)benzophenone p,p’bis(n,ndimethylamino)benzophenone bis(dimethylamino)-4,4’benzophenone p,p'-Bis(N,N-dimethylamino)benzophenone Benzophenone, 4,4'-bis(dimethylamino) p,p’-michler’sketone p,p'-Tetramethyl-4,4'-diaminobenzophenone NCI-C02006 MICHLERS KETONE Di-p-dimethylaminophenylketone Michler`s krtone Michler'sKetone BIS-DIMETHYLAMINOPHENYLMETHANONE 4,4'-Bis(dimethyL N,N'-Tetramethyl-4,4'-diaminobenzophenone TETRAMETHYL-P,P'-DIAMINOBENZOPHENONE p,p'-Michler's ketone (Tetramethyldiamino)benzophenone Ketone base michler’s 4,4’-di(N,N-Dimethylamino)diphenylketone Bis[4-(dimethylamino)phenyl] ketone 4-[4-(Dimethylamino)benzoyl]-N,N-dimethylaniline bis[4-(dimethylamino)phenyl]-Methanone Methanone, bis4-(dimethylamino)phenyl Bis[4-(dimethylamino)phenyl]methanone tetramethyldiaminobenzophenone BIS(DIMETHYLAMINO)BENZOPHENONE Bis[p-(N,N-dimethylamino)phenyl] ketone 4,4''-BIS(DIMETHYLAMINO)-BENZOPHENONE LABOTEST-BB LT00086928 N,N'-Bisdimethylamino MICHLER KETONE P,P'-TETRAMETHYLDIAMINOBENZOPHENONE 4,4’-Di(N,N-dimethylamino)benzophenone BIS(P-DIMETHYLAMINOPHENYL)KETONE 4,4'-Bis(dimethylamine)benzophenone 3,6-Dimethyl-1,4-dioxane-2,5-dione (4,4'-Bis(dimethylamino)benzo 4,4’-Tetramethyldiaminobenzophenone MFCD00008312

Density	1.1±0.1 g/cm3
Boiling Point	427.7±30.0 °C at 760 mmHg
Melting Point	174 -176 °C(lit.)
Molecular Formula	C₁₇H₂₀N₂O
Molecular Weight	268.353
Flash Point	183.9±16.9 °C
Exact Mass	268.157562
PSA	23.55000
LogP	3.87
Vapour Pressure	0.0±1.0 mmHg at 25°C
Index of Refraction	1.612
Stability	Stable. Combustible. Incompatible with strong oxidizing agents, strong reducing agents.
Water Solubility	400 mg/L (20 ºC)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DJ0250000

CHEMICAL NAME :: Benzophenone, 4,4'-bis(dimethylamino)-

CAS REGISTRY NUMBER :: 90-94-8

LAST UPDATED :: 199710

DATA ITEMS CITED :: 26

MOLECULAR FORMULA :: C17-H20-N2-O

MOLECULAR WEIGHT :: 268.39

WISWESSER LINE NOTATION :: 1N1&R D- 2V

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - wild bird species

DOSE/DURATION :: 100 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 15 gm/kg/78W-C

TOXIC EFFECTS :: Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 82 gm/kg/78W-C

TOXIC EFFECTS :: Tumorigenic - Carcinogenic by RTECS criteria Vascular - tumors Liver - tumors

TYPE OF TEST :: TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 27 gm/kg/78W-C

TOXIC EFFECTS :: Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :: TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 8 gm/kg/78W-C

TOXIC EFFECTS :: Tumorigenic - neoplastic by RTECS criteria Liver - tumors

TYPE OF TEST :: TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 164 gm/kg/78W-C

TOXIC EFFECTS :: Tumorigenic - Carcinogenic by RTECS criteria Vascular - tumors Liver - tumors

TYPE OF TEST :: DNA damage

TYPE OF TEST :: Unscheduled DNA synthesis

TYPE OF TEST :: Sister chromatid exchange

MUTATION DATA

TYPE OF TEST :: Sex chromosome loss and nondisjunction

TEST SYSTEM :: Rodent - hamster Fibroblast

DOSE/DURATION :: 1500 ug/L

REFERENCE :: MUTAEX Mutagenesis. (Oxford Univ. Press, Pinkhill House, Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 1986- Volume(issue)/page/year: 1,17,1986 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-GERMANY;Carcinogen JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X1044 No. of Facilities: 174 (estimated) No. of Industries: 7 No. of Occupations: 11 No. of Employees: 2026 (estimated) No. of Female Employees: 405 (estimated)

Symbol	GHS05, GHS08
Signal Word	Danger
Hazard Statements	H318-H341-H350
Precautionary Statements	P201-P280-P305 + P351 + P338-P308 + P313
Personal Protective Equipment	Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes	T:Toxic;
Risk Phrases	R41;R45;R68
Safety Phrases	S53-S45
RIDADR	2811
WGK Germany	3
RTECS	DJ0250000
Packaging Group	III
Hazard Class	6.1
HS Code	2922399090

Precursor 8
119-58-4 101-61-1 1226-46-6 201230-82-2
23332-31-2 32315-10-9 121-69-7 68-12-2
DownStream 9
81260-56-2 611-98-3 3708-39-2 81260-55-1
64-19-7 116-09-6 100-61-8 5809-25-6
492-80-8

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%

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