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

Downstream Products

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

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.

Temperature Dependence of the Self-Reaction of CH3O2 Radicals

The flash photolysis-ultraviolet absorption technique was used to measure the rate constants for the reaction CH3O2 + CH3O2 -> products (1) over the temperature range 248-417 K and the pressure range 60-700 torr of N2.Rate constants were measured by observing the second-order disappearance of CH3O2 radicals.The measured Arrhenius expression is k1 = (1.40 +/- 0.20) x 1E-13 expcm3 molecule-1 s-1, where the rate constant is defined by the expression -d/dt = 2k12.