Diethyl chlorothiophosphate

Modify Date: 2025-08-23 15:17:47

Diethyl chlorothiophosphate Structure
Diethyl chlorothiophosphate structure
Common Name Diethyl chlorothiophosphate
CAS Number 2524-04-1 Molecular Weight 188.61300
Density 1.2 g/mL at 25 °C(lit.) Boiling Point 96 °C
Molecular Formula C4H10ClO2PS Melting Point -75℃
MSDS Chinese USA Flash Point >230 °F
Symbol GHS05 GHS06
GHS05, GHS06
Signal Word Danger

 Names

Name Diethyl chlorothiophosphate
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.2 g/mL at 25 °C(lit.)
Boiling Point 96 °C
Melting Point -75℃
Molecular Formula C4H10ClO2PS
Molecular Weight 188.61300
Flash Point >230 °F
Exact Mass 187.98300
PSA 60.36000
LogP 3.17330
Vapour Pressure 0.152mmHg at 25°C
Index of Refraction n20/D 1.472(lit.)
Water Solubility hydrolyzes, immiscible

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
TD1780000
CHEMICAL NAME :
Phosphorochloridothioic acid, O,O-diethyl ester
CAS REGISTRY NUMBER :
2524-04-1
BEILSTEIN REFERENCE NO. :
0471434
LAST UPDATED :
199710
DATA ITEMS CITED :
13
MOLECULAR FORMULA :
C4-H10-Cl-O2-P-S
MOLECULAR WEIGHT :
188.62
WISWESSER LINE NOTATION :
2OPS&GO2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1340 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation Gastrointestinal - changes in structure or function of salivary glands Blood - hemorrhage
REFERENCE :
HYSAAV Hygiene and Sanitation (USSR). English translation of GISAAA. (Springfield, VA) 1964-71. Discontinued. Volume(issue)/page/year: 33(10-12),334,1968
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
20 ppm/4H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1172,1986
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85GMAT "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982 Volume(issue)/page/year: -,51,1982
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
725 mg/m3/2H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85GMAT "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982 Volume(issue)/page/year: -,51,1982
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
750 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 56(5),6,1991
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
900 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation Gastrointestinal - changes in structure or function of salivary glands Blood - hemorrhage
REFERENCE :
HYSAAV Hygiene and Sanitation (USSR). English translation of GISAAA. (Springfield, VA) 1964-71. Discontinued. Volume(issue)/page/year: 33(10-12),334,1968
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
34ZIAG "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969 Volume(issue)/page/year: -,393,1969
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
810 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - lacrimation Gastrointestinal - changes in structure or function of salivary glands Blood - hemorrhage
REFERENCE :
HYSAAV Hygiene and Sanitation (USSR). English translation of GISAAA. (Springfield, VA) 1964-71. Discontinued. Volume(issue)/page/year: 33(10-12),334,1968 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1 mg/m3/24H/17W-C
TOXIC EFFECTS :
Brain and Coverings - recordings from specific areas of CNS Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 56(5),6,1991 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 1 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4068 No. of Facilities: 30 (estimated) No. of Industries: 2 No. of Occupations: 4 No. of Employees: 1088 (estimated) No. of Female Employees: 187 (estimated)

 Safety Information

Symbol GHS05 GHS06
GHS05, GHS06
Signal Word Danger
Hazard Statements H301-H311-H314-H331
Precautionary Statements P261-P280-P301 + P310-P305 + P351 + P338-P310
Personal Protective Equipment Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes T+:Verytoxic;
Risk Phrases R21/22;R26;R34
Safety Phrases S23-S26-S36/37/39-S45-S28A
RIDADR UN 2751 8/PG 2
WGK Germany 3
RTECS TD1780000
Packaging Group II
Hazard Class 8
HS Code 2920190090

 Synthetic Route

 Customs

HS Code 2931900090
Summary 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

 Articles2

More Articles
Selective determination of volatile N-nitrosamines by derivatization with diethyl chlorothiophosphate and gas chromatography with flame photometric detection.

J. Chromatogr. A. 723(1) , 93-9, (1996)

A selective and sensitive method was developed for the determination of volatile N-nitrosamines by gas chromatography (GC). After denitrosation of N-nitrosamines with hydrobromic acid, the resulting s...

Selective determination of secondary amines as their N-diethylthiophosphoryl derivatives by gas chromatography with flame photometric detection.

Biomed. Chromatogr. 7(3) , 129-33, (1993)

A selective and sensitive method has been developed for the determination of secondary amines by gas chromatography (GC). After removal of primary amines by the reaction with o-phthaldialdehyde, secon...

 Synonyms

DECTP
Ethyl PCT,refined
O,O-diethyl chlorothiophosphate
U.N. 2751
Diethylchlorthiofosfat
diethyl thiophosphoryl chloride
EINECS 219-755-4
ETHYL INTERMEDIARY EP-1
O,O-diethyl phosphorochloridothioate
O,O-diethyl phosphorochloridothionate
diethylphosphorochloridothioate
O,O-diethyl chlorothionophosphate
Diethyl chlrothiophosphate
MFCD00009088
ETHYL PCT
DEPCT
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