690-02-8

Basic information

• Product Name: Dimethyl peroxide
• Synonyms: Dimethyl peroxide;Methyl peroxide
• CAS NO: 690-02-8
• Molecular Formula: C₂H₆O₂
• Molecular Weight: 62.07
• Mol File: 690-02-8.mol
• Article Data: 6

Chemical Properties

• Melting Point: -100°C
• Boiling Point: 40.6°C (rough estimate)
• Appearance: /
• Density: 0.8360
• Vapor Pressure: 4870mmHg at 25°C
• Refractive Index: 1.3220 (estimate)
• CAS DataBase Reference: Dimethyl peroxide(CAS DataBase Reference)
• NIST Chemistry Reference: Dimethyl peroxide(690-02-8)
• EPA Substance Registry System: Dimethyl peroxide(690-02-8)

Safety Data

• Hazardous Substances Data: 690-02-8(Hazardous Substances Data)

Usage

Purification Methods

Purify dimethyl peroxide by repeated trap-to-trap fractionation until no impurities could be detected by gas IR spectroscopy [Haas & Oberhammer J Am Chem Soc 106 6146 1984]. All necessary precautions should be taken in case of EXPLOSION.

InChI:InChI=1/C2H6O2/c1-3-4-2/h1-2H3

Upstream product

• 34557-54-5 methane 
• 4143-42-4 (Z)-azomethane 
• 14840-85-8 dihydroxymethyl radical 
• 2143-58-0 methylperoxy radical 
• 624-91-9 methyl nitrite 
• 593-91-9 trimethylbismuthine 
• 617-77-6 triethylbismuth 

Downstream Products

• 107-21-1 ethylene glycol 
• 50-00-0 formaldehyd 
• 7654-12-8 1,1,2,2-Tetramethyl-3-phenylcyclopropane 
• 118964-98-0 1-methoxy-2,2,3,3-tetramethyl-1-phenylcyclopropane 
• 624-91-9 methyl nitrite 

Relevant articles and documents

Low-Temperature Transformation of Methane to Methanol on Pd1O4Single Sites Anchored on the Internal Surface of Microporous Silicate

Direct conversion of methane to chemical feedstocks such as methanol under mild conditions is a challenging but ideal solution for utilization of methane. Pd1O4single-sites anchored on the internal surface of micropores of a microporous silicate exhibit high selectivity and activity in transforming CH4to CH3OH at 50–95 °C in aqueous phase through partial oxidation of CH4with H2O2. The selectivity for methanol production remains at 86.4 %, while the activity for methanol production at 95 °C is about 2.78 molecules per Pd1O4site per second when 2.0 wt % CuO is used as a co-catalyst with the Pd1O4@ZSM-5. Thermodynamic calculations suggest that the reaction toward methanol production is highly favorable compared to formation of a byproduct, methyl peroxide.

Oxidation of Sulfur Dioxide by Methylperoxy Radicals

This study was made to resolve the apparent discrepancy between the finite rate constants observed for the CH3O2 reaction with SO2 in high-intensity flash photolysis and near zero values observed recently by us and others for this reaction in NO-free, CH3O2-SO2 experiments at low intensity.

Fourier Transform Infrared Studies of the Self-Reaction of CH3O2 Radicals

Product studies were made with the FT IR method in the photooxidation of CH3N2CH3 and in the Cl-atom initiated oxidation of CH4 in O2-N2 mixtures at 700 torr and 297 K.The major products were CH2O, CH3OH, and CH3O2H in both systems.A weak, broad absorption band centered at 1030 cm-1 was assigned tentatively to CH3O2CH3.These results are consistent with the following primary and secondary reactions: (primary) 2CH3O2 ---> 2CH3O + O2 (1a); 2CH3O2 ---> CH3OH + CH2O + O2 (1b); 2CH3O2 ---> CH3O2CH3 + O2 (1c); (secondary) CH3O + O2 ---> CH2O + HO2 (5); CH3O2 + HO2 ---> CH3O2H + O2 (6).The relative rate costants for reactions 1a-c were determined to be k1a:k1b:k1c = 0.32 : 0.60 : 0. 08, respectively.