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Basic Information
CAS No.: 2524-04-1
Name: Diethyl chlorothiophosphate
Article Data: 69
Molecular Structure:
Molecular Structure of 2524-04-1 (Diethyl chlorothiophosphate)
Formula: C4H10ClO2PS
Molecular Weight: 188.615
Synonyms: Ethylphosphorochloridothioate ((EtO)2ClPS) (6CI);(Chlorodiethoxy)phosphine sulfide;Diethoxythiophosphoryl chloride;Diethyl phosphorochlorothioate;Diethylthiophosphoryl chloride;O,O-Diethyl thionophosphoric chloride;O,O-Diethyl thionophosphoryl chloride;O,O-Diethyl thiophosphorochloridate;
EINECS: 219-755-4
Density: 1.251 g/cm3
Melting Point: - 75 °C
Boiling Point: 187.5 °C at 760 mmHg
Flash Point: 75.8 °C
Solubility: immiscible with water
Appearance: clear colorless to light yellow liquid
Hazard Symbols: ToxicT,VeryT+
Risk Codes: 23/24/25-34-26-21/22
Safety: 23-26-36/37/39-45-28
Transport Information: UN 2751 8/PG 2
PSA: 60.36000
LogP: 3.17330
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Chemistry

Empirical Formula: C4H10ClO2PS
Molecular Weight: 188.6128 g/mol
EINECS: 219-755-4 
Index of Refraction: 1.483
Density: 1.251 g/cm3
Flash Point: 75.8 °C
Enthalpy of Vaporization: 40.63 kJ/mol
Boiling Point: 187.5 °C at 760 mmHg
Vapour Pressure: 0.866 mmHg at 25 °C
Structure of Diethyl chlorothiophosphate (CAS NO.2524-04-1):
            
IUPAC Name of Diethyl chlorothiophosphate (CAS NO.2524-04-1): Chloro-diethoxy-sulfanylidene-λ5-phosphane
Product Categories of Diethyl chlorothiophosphate (CAS NO.2524-04-1): Pharmaceutical Intermediates;Nucleotides & Related Reagents;Phosphorylating and Phosphorothioating Agents

Uses

 Diethyl chlorothiophosphate (CAS NO.2524-04-1) can be used for the synthesis of organophosphorus pesticides: phoxim, parathion,  chlorpyrifos, diazinon triazophos, and so on.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 810mg/kg (810mg/kg) SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE
GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
BLOOD: HEMORRHAGE		 Hygiene and Sanitation Vol. 33(10-12), Pg. 334, 1968.
mouse LC50 inhalation 725mg/m3/2H (725mg/m3)   "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 51, 1982.
mouse LD50 oral 800mg/kg (800mg/kg)   "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 51, 1982.
mouse LD50 unreported 750mg/kg (750mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 56(5), Pg. 6, 1991.
rabbit LD50 oral 900mg/kg (900mg/kg) SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE
GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
BLOOD: HEMORRHAGE		 Hygiene and Sanitation Vol. 33(10-12), Pg. 334, 1968.
rabbit LDLo skin 200mg/kg (200mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
BLOOD: OTHER CHANGE
LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES		 National Technical Information Service. Vol. OTS0536769,
rat LC50 inhalation 20ppm/4H (20ppm)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1172, 1986.
rat LD50 oral 1340mg/kg (1340mg/kg) SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE
GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
BLOOD: HEMORRHAGE		 Hygiene and Sanitation Vol. 33(10-12), Pg. 334, 1968.

Safety Profile

Hazard Codes: ToxicT,VeryT+
Risk Statements: 23/24/25-34-26-21/22 
R21/22: Harmful in contact with skin and if swallowed. 
R23/24/25: Toxic by inhalation, in contact with skin and if swallowed. 
R26: Very toxic by inhalation. 
R34: Causes burns.
Safety Statements: 23-26-36/37/39-45 
S23: Do not breathe vapour. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

Specification

  Diethyl chlorothiophosphate ,its cas register number is 2524-04-1. It also can be called Phosphorochloridothioic acid O,O-diethyl ester ; O,O-Diethyl chlorothiophosphate ;and O,O-diethyl chlorothiophosphate . It is incompatible with bases (including amines), with strong oxidizing agents, and with alcohols, and may react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salt