4,4'-Bis(diethylamino) benzophenone

Product Name: 4,4'-Bis(diethylamino) benzophenone
CAS No.: 90-93-7
Chemical Name: 4,4'-Bis(diethylamino) benzophenone
Synonyms: 4,4'-BIS(DIETHYLAMINO)BENZOPHENONE;PI-EMK;OMNIRAD EMK;MICHLER ETHYLKETONE;APi-EMK;YF-PI EAB;HRcure-EMK;IHT-PI EMK;JADEWIN EMK;Lencolo 5038
CBNumber: CB1487798
Molecular Formula: C21H28N2O
Formula Weight: 324.46
MOL File: 90-93-7.mol

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4,4'-Bis(diethylamino) benzophenone Property

Melting point:: 89-92 °C(lit.)
Boiling point:: 475.7±30.0 °C(Predicted)
Density: 1.048±0.06 g/cm3(Predicted)
bulk density: 400kg/m3
vapor pressure: 0Pa at 20℃
Flash point:: 151 °C
storage temp.: Store below +30°C.
solubility: Chloroform (Slightly), Methanol (Slightly)
pka: 4.14±0.32(Predicted)
form: Crystalline Granules
color: Yellow to yellow-green
PH: 4-6 (50g/l, H2O, 20℃)
Water Solubility: insoluble
Sensitive: Light Sensitive
λmax: 352nm(THF)(lit.)
BRN: 2148611
InChIKey: VYHBFRJRBHMIQZ-UHFFFAOYSA-N
LogP: 5.2 at 35℃
CAS DataBase Reference: 90-93-7(CAS DataBase Reference)
EPA Substance Registry System: Methanone, bis[4-(diethylamino)phenyl]- (90-93-7)

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Safety

Hazard Codes: Xi,N
Risk Statements: 36/37/38-50/53
Safety Statements: 26-60-61-36-24/25
RIDADR: UN 3077 9/PG 3
WGK Germany: 2
RTECS: OS9545500
F: 8
Hazard Note: Irritant
TSCA: Yes
HazardClass: 9
PackingGroup: III
HS Code: 29223990
Toxicity: LD50 orally in Rabbit: 5000 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

H400Very toxic to aquatic life

H401Toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P337+P313IF eye irritation persists: Get medical advice/attention.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 8.20161
Product name: 4,4′-Bis(diethylamino)-benzophenone
Purity: for synthesis
Packaging: 50g
Price: $58.4
Updated: 2025/07/31

Sigma-Aldrich

Product number: 8.20161
Product name: 4,4′-Bis(diethylamino)-benzophenone
Purity: for synthesis
Packaging: 250g
Price: $151
Updated: 2025/07/31

Sigma-Aldrich

Product number: 160326
Product name: 4,4′-Bis(diethylamino)benzophenone
Purity: ≥99%
Packaging: 25g
Price: $119.7
Updated: 2025/07/31

Sigma-Aldrich

Product number: 160326
Product name: 4,4′-Bis(diethylamino)benzophenone
Purity: ≥99%
Packaging: 100g
Price: $387.6
Updated: 2025/07/31

TCI Chemical

Product number: B0139
Product name: 4,4'-Bis(diethylamino)benzophenone
Purity: >98.0%(T)
Packaging: 25g
Price: $47
Updated: 2025/07/31

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4,4'-Bis(diethylamino) benzophenone Chemical Properties,Usage,Production

Description

4,4'-Bis(diethylamino) benzophenone is a highly efficient type II free radical photoinitiator that can initiate polymerization of oligomers under ultraviolet light. In addition, tetraethyl Michler's ketone is also an intermediate in the production of basic brilliant blue dye BO and triphenylmethane chemicals.

Chemical Properties

YELLOW TO YELLOW-GREEN CRYSTALLINE GRANULES

Flammability and Explosibility

Not classified

Synthesis

135-91-1

90-93-7

General procedure for the synthesis of tetraethyl mithridone from 4,4'-methylenebis(N,N-dimethylaniline): 4,4'-bis(dialkylamino)diphenylmethane (30g), cobalt complex (3) (0.9g), tetrachlorophenylhydrazine (0.9g), trioctylmethylammonium chloride (1g), and chlorobenzene (100 ml) were added into 250 ml four necked flask. At room temperature, 30% hydrogen peroxide (13.2 g) was slowly added dropwise and the reaction temperature was controlled between 20 and 25°C. The progress of the reaction was monitored by thin layer chromatography (TLC) until the ingredients were fully reacted. Upon completion of the reaction, the reaction mixture was cooled to 5 °C, washed by adding 30 ml of 20% sodium bisulfite solution, and left to stratify. The organic phase was concentrated by distillation under reduced pressure to give the crude product of tetraethyl mithridone (29 g). The crude product was recrystallized with n-heptane (29 g) to give a light yellow tetraethyl mesterolone solid (25.3 g), which was analyzed by high performance liquid chromatography (HPLC) and showed a purity of 99.1%.

Purification Methods

Crystallise the phenone from EtOH (25mL/g) and dry it under vacuum. Its picrate forms yellow needles from EtOH with m 178.5o. [Beilstein 14 II 59.]

References

[1] Patent: CN107686450, 2018, A. Location in patent: Paragraph 0020; 0023; 0026; 0029; 0031; 0032; 0033

4,4'-Bis(diethylamino) benzophenone Preparation Products And Raw materials

Raw materials

PHOSGENE

Preparation Products

Basic Blue 7

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4,4'-Bis(diethylamino) benzophenone Suppliers

Americas 1 Australia 1 Belgium 2 Canada 1 China 368 Europe 4 Germany 9 India 6 Japan 2 Slovakia 1 South Korea 1 Sweden 1 Switzerland 2 United Kingdom 18 United States 32 Global 449

Huaihua Yuanyanda Biotechnology Co., Ltd

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Alfa Aesar

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View Lastest Price from 4,4'-Bis(diethylamino) benzophenone manufacturers

HANGZHOU HAILAN CHEMICAL CO.,LTD.

Product: 4,4'-Bis(diethylamino) benzophenone 90-93-7
Price: US $0.00/kg
Min. Order: 1kg
Purity: 99%min
Supply Ability: 20tons
Release date: 2025-09-02

Hebei Chuanghai Biotechnology Co., Ltd

Product: UV Photoinitiator EMK / Photoinitiator EAB 90-93-7
Price: US $1.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 10mt
Release date: 2024-11-05

Jinan Finer Chemical Co., Ltd

Product: 4,4'-Bis(diethylamino) benzophenone 90-93-7
Price: US $0.00/Kg/Drum
Min. Order: 1KG
Purity: 99%
Supply Ability: 1000mt
Release date: 2020-11-13

90-93-7, 4,4'-Bis(diethylamino) benzophenoneRelated Search:

Michler's ketone Tetraethylammonium bromide Tetraethylammonium hydroxide Benzophenone oxime 2-Aminobenzophenone Benzophenone TETRAETHYLSILANE Benzophenone imine (3,4-Diaminophenyl)phenylmethanone 2,2',4,4'-Tetrahydroxybenzophenone 4-bromo-4'-fluorobenzophenone Tetrabutylphosphonium bromide Tetraethylammonium Chloride TETRAETHYLPHOSPHONIUM BROMIDE Tetraethylene glycol dimethyl ether Tetraethylammonium tetrafluoroborate Tetraethylammonium acetate TETRAETHYLAMMONIUM FLUORIDE DIHYDRATE

ETHYL MICHLER'S KETONE

4,4'-DIETHYLAMINOBENZOPHENONE

4,4-BIS(DIETHYLAMINO) BENZOPHENONE

4,4'-BIS(DIETHYLAMINO)BENZOPHENONE

4,4’-di(N,N-Diethylamino)benzophenone

4,4'-Carbonylbis(N,N-diethylaniline)

Bis[4-(diethylamino)phenyl] ketone

MICHLER ETHYLKETONE

MICHLER'S ETHYL KETONE

P,P'-TETRAETHYLDIAMINOBENZOPHENONE

N,N,N,N-TETRAETHYL-4,4'-DIAMINO-BENZOPHENONE

4,4'Bis(diethylamino) Benzophenone (Michler's Ethyl Ketone)

4,4'- double(Er Yi aMino)phenyl Methyl ketone

OMNIRAD EMK

Photoinitiator-EAB

Photoinitiator-EMK

YF-PI EAB

HRcure-EMK

bis[4-(diethylamino)phenyl]-methanon

bis[4-(diethylamino)phenyl]-Methanone

4,4'-Bis(diethylamine)benzophenone

4,4'-BIS(DIETHYLAMINO)BENZOPHENONE, 99+%

Ethyl ketone base

Tetraethyl-diaminobenzophenone

Methanone, bis4-(diethylamino)phenyl-

4,4'-Bis(diethylamino)benzophenone 98%

4,4-BIS(DIETHYLAMINO) BENZOPHENONE 98+%

SYNCUREEPDETHYL4-(DIMETHYLAMINO)BENZOATE

IHT-PI EMK

PI-EMK

-Bis(diethylamino) benzophenone

photo sensitizer EMK

4,4'-Bis(diethylamino)benzophenone &gt

Tetraethyl Michler's Ketone

4,4'-BIS(DIETHYLAMINO)-BENZOPHENONE FOR

Tetraethylmethrin

UV Photoinitiator EMK / Photoinitiator EAB

ETHYL MICHLER'S KETONE / 4,4'-Bis(diethylamino) benzophenone / Speedcure EMK

Photoinitiator-EMK/Photoinitiator-EAB

PHOTO INITIATOR TRUELICHT EMK

4'-Bis(diethylamino)benzophenone

Photo initiator Sunitor EMK

EMK/4,4'-bis(N,N-diethyl-amino) benzophenone

4,4'-bis(N,N-diethyl-amino) benzophenone

JADEWIN EMK

Photoluminator EKK

Lencolo 5038

APi-EMK

4, 4'-Bis(diethylamino) benzophenone Solution

4,4'-Bis(diethylamino) benzophenone

N,N,N',N'-Tetraethyl-4,4'-diaminobenzophenone

Benzophenoneandderivatives（1022）

4,4'-Bis(diethylamino)benzophenone EMK

90-93-7

C21H28N2O

COC6H4NC2H522

C2H52NC6H42CO

Photopolymerization Initiators