2913-40-8

Basic information

• Product Name: 4-hydroxy-3,5-dimethylcyclohexa-3,5-diene-1,2-dione
• CAS NO: 2913-40-8
• Molecular Formula: C₈H₈O₃
• Molecular Weight: 152.1473
• Mol File: 2913-40-8.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 235.8°C at 760 mmHg
• Flash Point: 110.7°C
• Density: 1.3g/cm³
• Vapor Pressure: 0.0089mmHg at 25°C
• Refractive Index: 1.565
• CAS DataBase Reference: 4-hydroxy-3,5-dimethylcyclohexa-3,5-diene-1,2-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 4-hydroxy-3,5-dimethylcyclohexa-3,5-diene-1,2-dione(2913-40-8)
• EPA Substance Registry System: 4-hydroxy-3,5-dimethylcyclohexa-3,5-diene-1,2-dione(2913-40-8)

Safety Data

• Hazardous Substances Data: 2913-40-8(Hazardous Substances Data)

Upstream product

• 576-26-1 2.6-dimethylphenol 
• 1123-09-7 3,5-dimethyl-2-cyclohexen-1-one 
• 527-61-7 2,6-dimethyl-1,4-benzoquinone 
• 108-68-9 3,5-Dimethylphenol 
• 95-68-1 2,4-Xylidine 
• 4380-94-3 3,5-dimethyl-1,2,4-benzenetriol 
• 41168-76-7 1,3-dimethyl-2,4,5-triacetoxybenzene 

Downstream Products

• 6717-01-7 2,6-dihydroxy-3,5-dimethyl-1,4-benzoquinone 
• 16635-79-3 1,2,3,5-tetraacetoxy-4,6-dimethyl-benzene 
• 4380-94-3 3,5-dimethyl-1,2,4-benzenetriol 
• 3214-57-1 2-methoxy-3,5-dimethyl-2,5-cyclohexadiene-1,4-dione 

Relevant articles and documents

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Photoprocesses of p-Benzoquinones in Aqueous Solution

The photochemistry of 1,4-benzoquinone (BQ) and several derivatives, for example, duroquinone, trimethyl-2,5- or 2,6-dimethyl-, and methyl-BQ in aqueous solution or mixtures with polar media, for example, acetonitrile or 2,2,2-trifluoroethanol, was studied by time-resolved UV-vis spectroscopy after pulses at 248 and 308 nm. The triplet state and the semiquinone radical (?QH/Q?-) of BQs are spectroscopically and kinetically separated intermediates. The radical yield in the absence of H-atom donors is low and significantly increased in the presence of alcohols. Efficient photoinduced charge formation, because of Q?- and H+ after H-atom transfer from 2-propanol to the triplet state, and small effects in the absence of a donor were observed by transient conductivity. The quantum yield of photodecomposition, λirr = 254 nm, is substantial for BQ, MeBQ, and Me2BQs in aqueous solution, but small for Me 4BQ. To account for the efficient photoconversion of BQs into hydrobenzoquinones and 2-hydroxy-1,4-benzoquinones, a novel water-mediated reaction not involving free radicals is proposed as major step. This mechanism is consistent with the prediction that the observed triplet state is monomeric and the yield of Q?-, detected by both transient absorption and conductivity, is low for sub-millimolar BQ, MeBQ, and Me2BQs at pH 5-6. In addition, H-atom abstraction from a polar organic solvent or by self-quenching plays a role in mixtures with water or at enhanced quinone concentration, respectively.

Das Diels-Alder-Dimer von 6-Hydroxy-2,6-dimethylcyclohexa-2,4-dienon, ein ungewoehnlicher Metabolit beim bakteriellen Abbau von 2,6-Xylenol

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