1066-97-3

1066-97-3 - Names and Identifiers

Name	ammonium O,O-dimethyl dithiophosphate
Synonyms	Ammonium O,O'-dimethyldithioph O,O-DIMETHYLDITHIOPHOSPHATE,AMMONIUM dimethoxy-sulfanyl-thioxo-phosphorane Ammonium O,O'-dimethyldithiophosphate ammonium o,o-dimethyl dithiophosphate ammonium O,O-dimethyl dithiophosphate ammonium o,o-dimethylphosphorodithioate Dithiophosphoric acid O,O-dimethyl S-ammonium salt azanium,dimethoxy-sulfanylidene-sulfido-λ5-phosphane
CAS	1066-97-3
EINECS	213-922-5
InChI	InChI=1/C2H7O2PS2.H3N/c1-3-5(6,7)4-2;/h1-2H3,(H,6,7);1H3

1066-97-3 - Physico-chemical Properties

Molecular Formula	C2H10NO2PS2
Molar Mass	175.21
Melting Point	146-150℃
Boling Point	194.1°C at 760 mmHg
Flash Point	71.2°C
Vapor Presure	0.627mmHg at 25°C
Storage Condition	-20°C
Physical and Chemical Properties	Pure methyl sulfide ammonium salt is white needle-like crystal, m.p.154 ~ 156 ℃, fragrant smell, industrial water solution is colorless or light yellow transparent liquid, the content of 38% ~ 42% when the relative density is 1.150~1.175(20 ℃), there are special odor, poor thermal stability, when the acid to generate sulfide.

1066-97-3 - Reference Information

Uses

O,O-dimethyl dithiophosphate ammonium salt is referred to as methyl sulfide ammonium salt, which is an intermediate of the organophosphorus insecticide dimethoate.

Production method

The preparation method is to react methyl sulfide with ammonium bicarbonate to prepare methyl sulfide ammonium salt. Under stirring, 20kg of kerosene, 500kg of water and 300kg of ammonium bicarbonate are sequentially put into the reaction kettle. Finally, methyl sulfide is added dropwise, the pH of the reaction solution is controlled to be 6~7, stirring is stopped, standing for 20min, filtering, standing for stratification, and methyl sulfide ammonium salt aqueous solution is obtained. NaHCO3, NaOH, etc. can also be used instead of NH4HCO3 to prepare methyl sulfide sodium salt.

Last Update：2024-04-09 21:01:54