2-ethyl anthraquinone

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Structural formula
Structural formula of 2-ethylanetrachinone
General
Surname 2-ethyl anthraquinone
other names

2-ethyl-9,10-anthracenedione

Molecular formula C 16 H 12 O 2
Brief description

yellow odorless solid

External identifiers / databases
CAS number 84-51-5
EC number 201-535-4
ECHA InfoCard 100.001.396
PubChem 6772
Wikidata Q4596880
properties
Molar mass 236.27 g mol −1
Physical state

firmly

density

1.27 g cm −3

Melting point

108.8 ° C

boiling point

approx. 400 ° C (994 hPa)

solubility

practically insoluble in water (about 0.25 mg l −1 at 20 ° C)

safety instructions
GHS labeling of hazardous substances
08 - Dangerous to health 09 - Dangerous for the environment

Caution

H and P phrases H: 373-410
P: 273-314
Toxicological data
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

2-Ethylanthraquinone is a chemical compound from the group of anthraquinones .

Extraction and presentation

2-Ethylanthraquinone can be obtained by reacting phthalic anhydride and ethylbenzene . Other synthetic methods are also known.

properties

2-Ethylanthraquinone is a flammable, difficult to ignite, crystalline, yellow, odorless solid that is practically insoluble in water.

use

2-Ethylanthraquinone can be used as a photoinitiator for the crosslinking or degradation of polyethylene . The compound is also used to produce hydrogen peroxide by hydrogenation with the aid of palladium / polyaniline as catalysts .

Riedl-Pfleiderer process

Individual evidence

  1. ↑ a b c d e f g h i j k Entry on 2-ethylanetrachinone in the GESTIS substance database of the IFA , accessed on November 20, 2018(JavaScript required) .
  2. ↑ Renshun Xu, Xinwen Guo et al. a .: A Green Synthesis of 2-ethylanthraquinone from 2- (4'-ethylbenzoyl) Benzoic Acid over H-Beta Zeolite. In: Catalysis Letters. 107, 2006, p. 149, doi : 10.1007 / s10562-005-0009-3 .
  3. ↑ Google Patents: CN104803837A - Method for preparing 2-ethyl anthraquinone through one-step reaction of ethylbenzene and phthalic anhydride under catalysis of alkali desilication modified Hbeta molecular sieve - Google Patents , accessed November 20, 2018.
  4. ↑ Data sheet 2-Ethylanthraquinone, 98% from AlfaAesar, accessed on November 20, 2018 ( PDF )(JavaScript required) .
  5. ^ W. Arthur Green: Industrial Photoinitiators A Technical Guide . CRC Press, 2010, ISBN 978-1-4398-2746-8 , pp. 34 ( limited preview in Google Book search).