7330-31-6

Basic information

• Product Name: dimethyl pentasulphide
• Synonyms: dimethyl pentasulphide;Dimethyl perpentasulfide;Einecs 230-823-2
• CAS NO: 7330-31-6
• Molecular Formula: C₂H₆S₅
• Molecular Weight: 190.39404
• EINECS: 230-823-2
• Mol File: 7330-31-6.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 297.8°C at 760 mmHg
• Flash Point: 145.3°C
• Appearance: /
• Density: 1.448g/cm³
• Vapor Pressure: 0.00234mmHg at 25°C
• Refractive Index: 1.709
• CAS DataBase Reference: dimethyl pentasulphide(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl pentasulphide(7330-31-6)
• EPA Substance Registry System: dimethyl pentasulphide(7330-31-6)

Safety Data

• Hazardous Substances Data: 7330-31-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C2H6S5/c1-3-5-7-6-4-2/h1-2H3

Upstream product

• 67-56-1 methanol 
• 27956-06-5 acetyl-methyl-trisulfane 
• 107-31-3 Methyl formate 
• 22015-54-9 dimethylhexasulfide 
• 77-78-1 dimethyl sulfate 
• 109-94-4 formic acid ethyl ester 
• 74-93-1 methylthiol 
• 74-88-4 methyl iodide 
• 60-29-7 diethyl ether 
• 5813-48-9 Methanesulfenyl chloride 
• 624-92-0 Dimethyldisulphide 
• 12136-50-4 potassium pentasulfide 

Downstream Products

• 624-92-0 Dimethyldisulphide 

Relevant articles and documents

Insertion of a two sulfur unit into the S-S bond - Tailor-made polysulfides

Triphenylthiosulfenyl chloride (1) reacts with disulfides RSSR, yielding tetrasulfides as the main products. The results of the insertion for different R groups are reported. A two-step mechanism involving the formation of unsymmetrical trisulfide intermediates containing the trityl group is proposed. (C) 2000 Elsevier Science Ltd.

Nucleophilic substitution of alkyl halides by electrogenerated polysulfide ions in N,N-dimethylacetamide

The reactions between a series of alkyl halides RX: X = I, R = CH3 (1), C3H7 (2); X = Br, R = C4H9 (3), 2-C4H9 (4), 3-C5H11 (5), PhCH2 (6); X = Cl, R = PhCH2 (7), C6H13 (8), and electrogenerated S1/3- ions (S62- ?S3.-) have been investigated by spectroelectrochemistry in N,N-dimethylacetamide at 20°C. RX substrates react in two steps: (i) nucleophilic substitution of S1/3- ions (SN2 process) yielding RSx- ions (x = 5.2, R = alkyl; x = 4.8, R = PhCH2); (ii) subsequent substitutions of RSx- ions lead to RSzR polysulfanes (z ≈ 3.5), probably through partial disproportionation of the anionic species. On a preparative scale, mixtures of CH3SzCH3 (z = 2-6, z = 3.9) or PhCH2Sz CH2Ph (z = 2-5, z = 3.7) were obtained from chemical reactions between 1, 6 and S62- ions, or electrochemical syntheses. Kinetic studies at 20°C of the reactions between S3.- ions and substrates 4, 5, 7 and 8 imply that the dianions S62- are the nucleophilic agents in the first step rather than S3.- radical anions.