O,O-Diethyl dithiophosphate
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O,O-Diethyl dithiophosphate
structure -
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CAS No:
298-06-6
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Formula:
C4H11O2PS2
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Chemical Name:
O,O-Diethyl dithiophosphate
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Synonyms:
Phosphorodithioic acid,O,O-diethyl ester;O,O′-Diethyl hydrogen dithiophosphate;Dithiophosphoric acid O,O-diethyl ester;O,O-Diethyl dithiophosphate;O,O-Diethyl phosphorodithioate;O,O′-Diethyl dithiophosphate;O,O-Diethyl hydrogen phosphorodithioate;O,O-Diethyl dithiophosphoric acid ester;O,O-Diethyl thiolothionophosphate;Di-O-ethyl dithiophosphate;NSC 171184;40219-16-7
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CAS No:
O,O-Diethyl dithiophosphate Basic Attributes
186.23
186.23
206-055-9
02C5XR639P
171184
DTXSID6027133
29209090
Characteristics
51.6
1.72
Liquid
1.1753 g/cm3 @ Temp: 13 °C
<0°C
85-90 °C @ Press: 4-5 Torr
181 °F
1.513
2-8°C
Safety Information
III
8
UN 3265 8/PG 2
3
23/24/25-34
26-36/37/39-45
TD7350000
T
P260-P280-P284-P301 + P310-P305 + P351 + P338-P310
H301 + H311-H314-H330
|Warning|H227: Combustible liquid [Warning Flammable liquids]|P210, P260, P261, P264, P270, P271, P280, P301+P312, P304+P312, P304+P340, P305+P351+P338, P312, P314, P330, P337+P313, P370+P378, P403+P235, and P501
O,O-Diethyl dithiophosphate Use and Manufacturing
Ethyl sulfide is obtained by the reaction of absolute ethanol and phosphorus pentasulfide. The content of the product obtained by the original process is 85% to 87%, and the yield is about 85%. The new process uses catalysts to greatly improve the yield and product quality. The process is: adding phosphorus pentasulfide to the mother liquor of the last batch of sulfides under a certain proportion under stirring, adding an appropriate amount of catalyst, adding anhydrous alcohol under reduced pressure, and controlling the temperature at 50-65°C (maximum 80°C), The addition is completed within 15-25 minutes, and the reaction is kept at 50-65°C for 10-20 minutes, and then cooled to below 45°C, left to stand, and the product is discharged. The hydrogen sulfide gas generated in the reaction is absorbed by lye. The yield is 90% to 92%, and the product content is 91% to 93%.
This product is a pesticide intermediate, used to prepare pesticides such as formazan and ethyl rice Fengsan. O,O-diethyl dithiophosphoric acid ester is chlorinated to obtain O,O-diethyl thiophosphoryl chloride, which is also a pesticide intermediate. It is used to synthesize parathion, systemic phosphorus, moth phosphorus, octane Phosphorus, 1605, 1059 and Suhua 203 etc.
Intermediates
Agricultural products (non-pesticidal)
Mining (except oil and gas) and support activities|Phosphorodithioic acid, O,O-diethyl ester: ACTIVE
A SCREENING METHOD IS GIVEN FOR RAPID ASSESSMENT OF HUMAN EXPOSURE TO ORGANOPHOSPHATE PESTICIDES. PENTAFLUOROBENZYL BROMIDE WAS UTILIZED AS THE DERIVATIZATION REAGENT TO FORM PENTAFLUOROBENZYL ESTERS FROM URINARY METABOLITES. THE REACTION PRODUCTS WERE DETERMINED BY GAS CHROMATOGRAPHY ON ROUTINE PESTICIDE COLUMNS UTILIZING P-SPECIFIC FLAME PHOTOMETRIC DETECTOR.
Computed Properties
Molecular Weight:186.2
XLogP3:2.4
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:4
Exact Mass:185.99380893
Monoisotopic Mass:185.99380893
Topological Polar Surface Area:51.6
Heavy Atom Count:9
Complexity:107
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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