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2-Ethylanthraquinone

Product Name2-Ethylanthraquinone
CAS84-51-5
MFC16H12O2
MW236.27
EINECS201-535-4
MOL File84-51-5.mol

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
Henry's Law Constant	2.6×10¹ mol/(m³Pa) at 25℃, Abraham and Jr. (2019)
Stability	Stable. Combustible. Incompatible with strong oxidizing agents.
InChI	1S/C16H12O2/c1-2-10-7-8-13-14(9-10)16(18)12-6-4-3-5-11(12)15(13)17/h3-9H,2H2,1H3
InChIKey	SJEBAWHUJDUKQK-UHFFFAOYSA-N
SMILES	CCc1ccc2C(=O)c3ccccc3C(=O)c2c1
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	TSCA listed
HS Code	29146990
Storage Class	11 - Combustible Solids
Hazard Classifications	Aquatic Acute 1 Aquatic Chronic 1 STOT RE 2 Oral
Toxicity	LD50 orally in Rabbit: > 6400 mg/kg

MSDS

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

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

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.

Uses

Synthesis, especially of hydrogen peroxide.

Flammability and Explosibility

Non flammable

Synthesis

1151-14-0

84-51-5

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

Chemical Properties

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MSDS

Usage And Synthesis

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