2-Ethylanthraquinone CAS 84-51-5

Introduction：Basic information about 2-Ethylanthraquinone CAS 84-51-5, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

2-Ethylanthraquinone Basic information

• Product Name: 2-Ethylanthraquinone
• Synonyms: Ethylanthraquinone;USAF so-1;usafso-1;2-ETHYLANTHRAQUINONE;2-ETHYL ANTHROQUINONE;2-Ethyl-9,10-anthracenedione;TIMTEC-BB SBB008818;Ethylanthraquinone,98%
• CAS: 84-51-5
• MF: C16H12O2
• MW: 236.27
• EINECS: 201-535-4
• Product Categories: Photoluminescent Materials > Light-Emitting Dopants and Fluorescent Dyes;Photonic and Optical Materials;Intermediates of Dyes and Pigments;Organics;Anthraquinones;Chloroanthraquine, etc.;Functional Materials;Photopolymerization Initiators;84-51-5;bc0001
• Mol File: 84-51-5.mol

2-Ethylanthraquinone Chemical Properties

• Melting point: 108-111 °C (lit.)
• Boiling point: 180-190°C
• bulk density: 650kg/m3
• density: 1.27 g/cm3 (21℃)
• vapor pressure: <1 hPa (25 °C)
• refractive index: 1.6290 (estimate)
• Fp: >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.
• 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

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

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 Preparation Products And Raw materials

• Raw materials: Phthalic anhydride-->Ethylbenzene-->2-Ehtylanthrahydroquinone-->2-(2-ETHYLBENZOYL)BENZOIC ACID-->Benzoic acid, 2-(3-ethylbenzoyl)--->9,10-Anthracenediol, 2-ethyl-9,10-dihydro--->2-ETHYLANTHRACENE-->2-Acetylanthracene-->2-(4-ETHYLBENZOYL)BENZOIC ACID-->2-ETHYL-9,10-DIMETHOXYANTHRACENE
• Preparation Products: Hydrogen peroxide-->ANTHRAQUINONE-2-CARBOXYLIC ACID