33451-32-0

Basic information

• Product Name: Methyldioxy, oxophenyl-
• CAS NO: 33451-32-0
• Molecular Formula: C7H5O3
• Molecular Weight: 137.115
• Mol File: 33451-32-0.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: Methyldioxy, oxophenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Methyldioxy, oxophenyl-(33451-32-0)
• EPA Substance Registry System: Methyldioxy, oxophenyl-(33451-32-0)

Safety Data

• Hazardous Substances Data: 33451-32-0(Hazardous Substances Data)

Upstream product

• 32368-69-7 benzoyl peroxynitrate 
• 938-16-9 2,2-dimethylpropiophenone 
• 2396-01-2 phenyl radical 
• 201230-82-2 carbon monoxide 
• 134-81-6 benzil 
• 2652-65-5 benzoyl radical 

Downstream Products

• 1854-28-0 benzoyloxy radical 
• 790674-36-1 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) cation radical 
• 93-59-4 Perbenzoic acid 
• 14546-48-6 manganese(III) ion 

Relevant articles and documents

Reactions of Mn(II) and Mn(III) with alkyl, peroxyalkyl, and peroxyacyl radicals in water and acetic acid

The kinetics of oxidation of Mn(II) with acylperoxyl and alkylperoxyl radicals were determined by laser flash photolysis utilizing a macrocyclic nickel complex as a kinetic probe. Radicals were generated photochemically from the appropriate ketones in the presence of molecular oxygen. In both acidic aqueous solutions and in 95% acetic acid, Mn(II) reacts with acylperoxyl radicals with k = (0.5-1.6) × 106 M-1 s-1 and somewhat more slowly with alkylperoxyl radicals, k = (0.5-5) x 10 5 M-1 s-1. Mn(III) rapidly oxidizes benzyl radicals, k = 2.3 × 108 M-1 s-1 (glacial acetic acid) and 3.7 × 108 M-1 s-1 (95% acetic acid). The value in 3.0 M aqueous perchloric acid is much smaller, 1× 107 M-1 s-1. The decarbonylation of benzoyl radicals in H2O has k = 1.2 × 106 s -1.

Photochemistry of 9-fluorenone oxime phenylglyoxylate: A combined TRIR, TREPR and ab initio study

The photochemistry of 9-fluorenone oxime phenylglyoxylate (1) in tetrachloromethane was investigated by a variety of time-resolved methods [STEP-SCAN TRIR and time-resolved EPR (TREPR)]. Photolysis of 1 yields the benzoyl radical, carbon dioxide and the f

Unimolecular Decomposition of Peroxynitrates

Thermal decomposition rate constants of peroxynitric acid (HO2NO2) and chloromethyl peroxynitrate (CH2ClO2NO2) were measured as a function of temperature and total pressure in a photochemical reaction chamber of 420 l volume.Peroxynitrate concentrations were monitored by long-path IR absorption using a Fourier transform spectrometer.Analysis of these results in terms of unimolecular reaction rate theories yields kinetic parameters which allow to calculate decomposition rate constants of HO2NO2 and CH2ClO2NO2 for all pressures and temperatures which are of interest for atmospheric applications.These results, together with kinetic data on the thermal decomposition of other peroxynitrates previously obtained in our laboratory, allow to rationalize the change of the bond energies in peroxynitrates (RO2-NO2) with the nature of the group R.Combination of the decomposition data with experimental results on the reverse reactions from the literature are used to determine thermochemical data of peroxynitrates. - Keywords: Peroxynitric acid / Peroxynitrates / Thermal decomposition