1121-81-9

Basic information

• Product Name: 2,4-dimethyl-1,3,2,4-dithiadiphosphetane 2,4-disulfide
• CAS NO: 1121-81-9
• Molecular Formula: C₂H₆P₂S₄
• Molecular Weight: 220.2766
• Mol File: 1121-81-9.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 287.7°C at 760 mmHg
• Flash Point: 127.8°C
• Density: 1.57g/cm³
• Vapor Pressure: 0.00423mmHg at 25°C
• Refractive Index: 1.679
• CAS DataBase Reference: 2,4-dimethyl-1,3,2,4-dithiadiphosphetane 2,4-disulfide(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-dimethyl-1,3,2,4-dithiadiphosphetane 2,4-disulfide(1121-81-9)
• EPA Substance Registry System: 2,4-dimethyl-1,3,2,4-dithiadiphosphetane 2,4-disulfide(1121-81-9)

Safety Data

• Hazardous Substances Data: 1121-81-9(Hazardous Substances Data)

Usage

Chemical compound

2,4-dimethyl-1,3,2,4-dithiadiphosphetane 2,4-disulfide
Commonly used as a pesticide and insecticide

Physical properties

white crystalline solid with a pungent odor

Toxicity

highly toxic to humans and animals if ingested, inhaled, or absorbed through the skin

Mode of action

works by inhibiting the activity of certain enzymes in pests

Environmental impact

can persist in soil and water, negatively impacting non-target organisms

Regulation

highly regulated in many countries due to health and environmental hazards

Upstream product

• 7783-06-4 hydrogen sulfide 
• 676-98-2 methylphosphonothioic dichloride 

Downstream Products

• 34170-80-4 Methyl-thiophosphonsaeurechlorid-O-<3-methyl-phenyl>-ester 
• 88135-49-3 Methyl-thiophosphonsaeurechlorid-O-<2-methyl-phenyl>-ester 
• 27976-53-0 4-methoxyphenyl methyl phosphonochloridothioate 
• 74653-53-5 Ni(II)-[Ethyl(phenyl)amido]dithiomethylphosphonsaeure 
• 93168-64-0 Methyl-thiophosphonsaeurechlorid-O-<2-phenyl-aethyl>-ester 
• 14410-08-3 4-methylphenyl methyl phosphonochloridothioate 
• 27976-51-8 4-nitrophenyl methylphosphonothiochloridate 
• 1199-96-8 Methyl-dithiophosphonsaeure-O-benzylester 

Relevant articles and documents

DIE STRUKTUR VON ALKYL- UND ARYLPERTHIOPHOSPHONSAEUREANHYDRIDEN IN LOESUNG

The analysis of 1H-, 31P- and 13C-NMR spectra of different alkyl- and arylperthiophosphonic acid anhydrides shows that these compounds prefer a dimeric structure in solution.They exist as 2,4-diorganyl-2,4-dithioxo-1,3,2λ5,4λ5-dithiadiphosphetanes.Most of the perthiophosphonic acid anhydrides form configuration isomers which differ in the position of the thioxo groups relatively to the ring plane.The concentration of the trans-isomer is generally larger than that of the cis-isomer.The ratio of the concentration of both isomers is obviously determined by the polarity of the solvent used.Mixing of solutions of different perthiophosphonic acid anhydrides results in unsymmetrical compounds also existing in cis- and trans-configuration. 31P chemical shifts and geminal P-P coupling constants for symmetrical and unsymmetrical perthiophosphonic acid anhydrides are presented and discussed. - Key words: 31P chemical shifts; P-P coupling constants; perthiophosphonic acid anhydrides; mixed perthiophosphonic acid anhydrides; configuration isomers; 2,4-diorganyl-2,4-dithioxo-1,3,2λ5,4λ5-dithiadiphosphetanes.