p-Toluquinone Chemical Properties

Melting point:

66-67 °C(lit.)

Boiling point:

187.52°C (rough estimate)

Density 

1.0800

refractive index 

1.5286 (estimate)

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

form 

Crystalline

color 

Yellowish green

Water Solubility 

insoluble

BRN 

471387

CAS DataBase Reference

553-97-9(CAS DataBase Reference)

NIST Chemistry Reference

p-Benzoquinone, 2-methyl-(553-97-9)

EPA Substance Registry System

2-Methyl-p-benzoquinone (553-97-9)

Safety Information

Hazard Codes 

Xn,T

Risk Statements 

22-36/37/38-25

Safety Statements 

26-45-37/39-28A

WGK Germany 

3

RTECS 

DK6300000

F 

8

TSCA 

Yes

HS Code 

29146990

Hazardous Substances Data

553-97-9(Hazardous Substances Data)

MSDS

• Language:English Provider:2-Methyl-2,5-cyclohexadiene-1,4-dione
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

p-Toluquinone Usage And Synthesis

Chemical Properties

yellow to brownish crystalline powder

Uses

Methyl-p-benzoquinone imine is the products were the tetrahedral adducts. Synthesis of 2H-indazole-4,7-dione derivatives from3-phenylsydnone and p-toluquinone. A Michael addition of 2-methylcyclopentane-1,3-dione to various p-toluquinone imides exclusively afforded the sole products in a regiospecific manner.

Uses

Methyl-p-benzoquinone (MBQ) can be used as a coating that forms an interface between the electrode and lithium (Li) electrolyte for the fabrication of redox flow batteries. It can be reduced during positive electrospray ionization mass spectroscopy (ESI MS) and can be potentially used during corona discharge.

Synthesis Reference(s)

The Journal of Organic Chemistry, 52, p. 5053, 1987 DOI: 10.1021/jo00231a048
Synthetic Communications, 7, p. 467, 1977 DOI: 10.1080/00397917708050782

Safety Profile

Poison by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

Crystallise p-toluoquinone from heptane or EtOH, dry rapidly (vacuum/P2O5) and stored in a vacuum. [Beilstein 7 IV 2088.]

p-Toluquinone(553-97-9)Related Product Information

• 1,4-Benzoquinone
• Methylparaben
• Thiophanate-methyl
• Bensulfuron methyl
• Sodium carboxymethyl cellulose
• Chloranil
• Methyl acrylate
• N,N-Dimethylformamide
• Idebenone
• Kresoxim-methyl
• Methyl
• (-)-2-[METHYLAMINO]-1-PHENYLPROPANE
• Methyl bromide
• EMBELIN
• 2,3-Dimethoxy-5-methyl-p-benzoquinone
• 2,5-Di-tert-butyl-1,4-benzoquinone
• 2,6-Di-tert-butyl-p-benzoquinone
• P-XYLOQUINONE