EPN (insecticide)

EPN (insecticide)
Names

IUPAC name O-Ethyl O-(4-nitrophenyl) phenylphosphonothioate
Other names Ethyl p-nitrophenyl thionobenzenephosphonate, Ethyl p-nitrophenyl benzenethionophosphonate
Identifiers
CAS Number	2104-64-5
3D model (Jmol)	Interactive image
ChemSpider	15571
ECHA InfoCard	100.016.615
PubChem	16421
InChI InChI=1S/C14H14NO4PS/c1-2-18-20(21,14-6-4-3-5-7-14)19-13-10-8-12(9-11-13)15(16)17/h3-11H,2H2,1H3 Key: AIGRXSNSLVJMEA-UHFFFAOYSA-N InChI=1/C14H14NO4PS/c1-2-18-20(21,14-6-4-3-5-7-14)19-13-10-8-12(9-11-13)15(16)17/h3-11H,2H2,1H3 Key: AIGRXSNSLVJMEA-UHFFFAOYAT
SMILES S=P(Oc1ccc(cc1)[N+]([O-])=O)(OCC)c2ccccc2
Properties
Chemical formula	C₁₄H₁₄NO₄PS
Molar mass	323.30 g·mol⁻¹
Appearance	Light yellow crystalline powder^[1]
Density	1.3 g/cm³^[1]
Melting point	36 °C (97 °F; 309 K)^[1]
Solubility in water	Insoluble^[1]
Hazards
Flash point	noncombustible ^[2]
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	20 mg/kg (oral, dog) 8 mg/kg (oral, rat) 36 mg/kg (oral, rat) 7 mg/kg (oral, rat) 12.2 mg/kg (oral, mouse)^[3]
US health exposure limits (NIOSH):
PEL (Permissible)	TWA 0.5 mg/m³ [skin]^[2]
REL (Recommended)	TWA 0.5 mg/m³ [skin]^[2]
IDLH (Immediate danger)	5 mg/m³^[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

EPN is an insecticide of the phosphonothioate class.^[4] It is used against pests such as European corn borer, rice stem borer, bollworm, tobacco budworm, and boll weevil.^[5]

References

1 2 3 4 "EPN International Chemical Safety Card". National Institute for Occupational Safety and Health.
1 2 3 4 "NIOSH Pocket Guide to Chemical Hazards #0255". National Institute for Occupational Safety and Health (NIOSH).
↑ "EPN". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH). 4 December 2014. Retrieved 19 March 2015.
↑ "EPN Data Sheet". alanwood.net.
↑ "EPN Chemical Profile". Pesticide Management Education Program, Cornell University.

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