7175-75-9

Basic information

• Product Name: methylsulfanyl
• Synonyms: methylsulfanyl radical; Methylthio radical
• CAS NO: 7175-75-9
• Molecular Formula: CH₃S
• Molecular Weight: 47.0995
• Mol File: 7175-75-9.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: methylsulfanyl(CAS DataBase Reference)
• NIST Chemistry Reference: methylsulfanyl(7175-75-9)
• EPA Substance Registry System: methylsulfanyl(7175-75-9)

Safety Data

• Hazardous Substances Data: 7175-75-9(Hazardous Substances Data)

Upstream product

• 624-92-0 Dimethyldisulphide 
• 3129-17-7 diphenylcarbene 
• 2229-07-4 methyl radical 
• 29245-72-5 methyl disulfide radical 
• 74-93-1 methylthiol 
• 14700-96-0 clorine 
• 2074-87-5 carbon nitride 

Downstream Products

• 50-00-0 formaldehyd 
• 2229-07-4 methyl radical 
• 74-93-1 methylthiol 
• 18681-52-2 methylsulfenyl bromide 
• 25683-64-1 methyl sulphinyl radical 
• 10102-43-9 nitrogen(II) oxide 
• 21351-18-8 methyl thionitrate 
• 5813-48-9 Methanesulfenyl chloride 
• 14700-96-0 clorine 

Relevant articles and documents

Channeling of products in the hot atom reaction H + (CN)2 → HCN/HNC + CN and in the reaction of CN with CH3SH

Infrared transient absorption spectroscopy was used to determine the total product branching fractions for the gas-phase hot atom reaction H + (CN)2 → HCN/HNC + CN (a) and the reaction CN + CH3SH → HCN/HNC + CH3S/CH2SH (b) at 293 K. The reactive H atoms had an initial mean translational energy of 92 kJ mol-1, with a 38 kJ mol-1 fwhm Gaussian energy distribution. The branching fractions determined for the product channels forming HCN and HNC, respectively, are 0.88 and 0.12 (±0.05) for reaction (a) and 0.81 and 0.19 (±0.08) for reaction (b). The bimolecular rate constant for reaction (b) was measured to be (2.7 ± 0.3) × 10-10 cm3 molec-1 s-1 at 293 K. The observed product branching fractions for reaction (a) are consistent with the assumption that the average reactive cross sections for the two product channels are approximately equal above their respective energy thresholds. The results for reaction (a) are compared with the related H + XCN (X = Br, Cl) reactions. The large rate coefficient for reaction (b) suggests an interaction via a long-range intermolecular potential, which is facilitated by the small ionization energy of CH3SH and large electron affinity of CN. The results for reaction (b) are compared with the related reactions of Cl and OH with CH3SH.

SCAVENGING OF RADICALS FROM THE GAS PHASE BY FREEZING WITH DIMETHYL DISULFIDE: 1. TEST OF THE METHOD FOR LIGHT RADICALS.

H and O atoms and methyl radicals produced in microwave discharges of H//2/He, O//2/He and CH//4/He mixtures, respectively, were scavenged by supersonic nozzle probing with subsequent freezing and reaction with dimethyl disulfide on a liquid nitrogen cooled wall. The main reaction products for the three kinds of radicals were CH//3SH, CH//3S(O)SCH//3 and CH//3SCH//3, respectively. The scavenging efficiencies for the different radicals were determined and measured as a function of the gas phase radical concentration, the flow of scavenger molecules, the pressure in the vacuum chamber, and the conditions of the discharge and the flow through the sampling nozzle. It is concluded that this method is suitable for light radicals with reservations in the case of H atoms and can probably be used with still better success for heavier radicals.