2-Ethylanthraquinone Chemical Properties

Melting point:

108-111 °C (lit.)

Boiling point:

180-190°C

Density 

1.27 g/cm3 (21℃)

bulk density

650kg/m3

vapor pressure 

<1 hPa (25 °C)

refractive index 

1.6290 (estimate)

Flash point:

>210°C

storage temp. 

Store below +30°C.

solubility 

0.00025g/l

form 

powder to crystal

color 

Light yellow to Amber to Dark green

Water Solubility 

Insoluble in water.

BRN 

1969873

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents.

InChIKey

SJEBAWHUJDUKQK-UHFFFAOYSA-N

LogP

4.6

CAS DataBase Reference

84-51-5(CAS DataBase Reference)

NIST Chemistry Reference

9,10-Anthracenedione, 2-ethyl-(84-51-5)

EPA Substance Registry System

2-Ethylanthraquinone (84-51-5)

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

22-36/37/38-50/53-48/22

Safety Statements 

24/25-36-26-61-60-37

RIDADR 

UN 3077 9 / PGIII

WGK Germany 

1

RTECS 

CB0525000

Autoignition Temperature

485 °C

TSCA 

Yes

HS Code 

29146990

Toxicity

LD50 orally in Rabbit: > 6400 mg/kg

MSDS

• Language:English Provider:2-Ethyl anthraquinone
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

2-Ethylanthraquinone Usage And Synthesis

Description

2-Ethylanthraquinone is an organic compound that is a derivative of anthraquinone. It is commonly used in the industrial production of hydrogen peroxide (H2O2) due to its high selectivity. Another major application is the production of dyes². It can also be used as a photo-initiator of crosslinking or degradation of polyethylene³.

Chemical Properties

white or yellowish crystals or powder

Uses

Synthesis, especially of hydrogen peroxide.

Uses

2-Ethylanthraquinone can be used as a photoinitiator of crosslinking or degradation of polyethylene. It is used to produce hydrogen peroxide by hydrogenation with the help of Pd/polyaniline as the catalysts.

Flammability and Explosibility

Non flammable

Synthesis

General procedure for the synthesis of 2-ethylanthraquinone from 2-(4-ethylbenzoyl)benzoic acid: (2) 2-(4-ethylbenzoyl)benzoic acid prepared as described above and concentrated sulfuric acid were sequentially passed through a piping system comprising a T-type mixer, a reactor A, a Y-type mixer, a reactor B and a separator. In this system, 2-(4-ethylbenzoyl)benzoic acid enters the T-mixer at 180° C., while concentrated sulfuric acid enters the T-mixer at 50° C. The mass-volume ratio of the two is 1 g:3 mL. The mixing temperature in the T-mixer is 50° C., and the residence time is 35 seconds. Subsequently, the mixture enters reactor A and is reacted at 120°C for 30 minutes. Next, it was passed through a Y-mixer at 40°C and finally into Reactor B where the reaction was completed at 50°C to produce 2-ethyl anthraquinone in 95.5% yield.

References

[1] Patent: CN108101726, 2018, A. Location in patent: Paragraph 0025; 0030; 0035; 0040; 0045; 0050; 0055; 0060
[2] Patent: CN106045838, 2016, A. Location in patent: Paragraph 0038
[3] Patent: CN107954846, 2018, A. Location in patent: Paragraph 0027-0029; 0030-0032; 0036-0041
[4] Patent: CN107879915, 2018, A. Location in patent: Paragraph 0027-0028
[5] Patent: CN106083550, 2016, A

2-Ethylanthraquinone(84-51-5)Related Product Information

• Ethylparaben
• 1-NITROANTHRAQUINONE
• Mitoxantrone
• Ethyl formate
• Anthraquinone
• DITHIANON
• Mitoxantrone hydrochloride
• Ethylbenzene
• Ethyl acrylate
• Ethyl acetate
• Ethyl vanillin
• Ethanol
• Ethyl propionate
• ACLARUBICIN HYDROCHLORIDE
• CARMINE
• 2-(1,1-Dimethylpropyl)anthraquinone
• 2-tert-Butylanthraquinone
• Mitoxantrone HCL for Injection (Lyophilized Power)