C4H10ClO2PS
188.61 g/mol
AgrochemicalDanger
O,O-Diethyl chlorothiophosphate
CAS2524-04-1EC219-755-4
Category
Agrochemical
Compound Class
Other
Primary Use
pesticide intermediate
O,O-Diethyl chlorothiophosphate is a chemical compound used primarily as an intermediate in the manufacture of pesticides, particularly for producing organophosphate insecticides such as parathion. It also serves as an additive in oils and gasoline, as a flame retardant, and as a flotation agent.
pesticide intermediateoil and gasoline additiveflame retardant
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Reading
Safety Reference
Danger
H301Toxic if swallowed
H302Harmful if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H330Fatal if inhaled
H331Toxic if inhaled
H412Harmful to aquatic life with long lasting effects
H227
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for O,O-Diethyl chlorothiophosphate (CAS 2524-04-1) is 2920.90.
HS code (international, 6-digit)
2920.90
EU CN code (8-digit)
2920 90 70
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
chloro-diethoxy-sulfanylidene-lambda5-phosphane
InChIKey
KMJJJTCKNZYTEY-UHFFFAOYSA-N
SMILES
CCOP(=S)(OCC)Cl
Synonyms (35)
- DECTP
- Diethylchlorothiophosphate
- Diethylchlorthiofosfat
- Ethyl PCT
- P(S)(OEt)2Cl
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