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EPN
EPN
- CAS:
- 2104-64-5
- MF:
- C14H14NO4PS
- MW:
- 323.3
Properties
- Melting point:
- 36℃
- Boiling point:
- 371.1°C (estimate)
- Density
- 1.3 g/cm3
- vapor pressure
- 3,000 at 100 °C (quoted, Verschueren, 1983)
- refractive index
- 1.6021 (589.3 nm 25℃)
- Flash point:
- 2 °C
- storage temp.
- APPROX 4°C
- solubility
- Miscible with acetone, benzene, methanol, isopropanol, toluene, and xylene (Windholz et al., 1983)
- Water Solubility
- 6.6 mg l-1 (20 °C, est.)
- form
- solid
- Merck
- 13,3656
- BRN
- 2542580
- Exposure limits
- NIOSH REL: TWA 0.5 mg/m3, IDLH 5 mg/m3; OSHA PEL: TWA 0.5 mg/m3; ACGIH TLV: TWA 0.5 mg/m3.
Safety Information
- Symbol(GHS)
GHS06,GHS09
- Signal word
- Danger
- Hazard statements
- H300+H310-H410
- Precautionary statements
- P262-P273-P280-P301+P310+P330-P302+P352+P310
- Hazard Codes
- T+,N,Xn,F
- Risk Statements
- 27/28-50/53-36-20/21/22-11
- Safety Statements
- 22-36/37-45-60-61-16
- RIDADR
- 3018
- OEB
- C
- OEL
- TWA: 0.5 mg/m3 [skin]
- WGK Germany
- 3
- RTECS
- TB1925000
- HazardClass
- 6.1(a)
- PackingGroup
- II
- Toxicity
- LD50 in female, male rats (mg/kg): 7.7, 36 orally; 25, 230 dermal (Gaines)
- IDLA
- 5 mg/m3
Use
Biological. From the first-order biotic and abiotic rate constants of EPN in estuarine water and sediment/water systems, the estimated biodegradation half-lives were 6.2 and 9.2 days, respectively (Walker et al., 1988). Soil. Though no products were reported, the half-life in soil is 15–30 days (Hartley and Kidd, 1987). Photolytic. EPN may undergo direct photolysis since the insecticide showed some absorption when a 1,4-dioxane was irradiated with UV light (l >290 nm) (Gore et al., 1971). Chemical/Physical. On heating, EPN is converted to the S-ethyl isomer (Worthing and Hance, 1991). Releases toxic fumes of phosphorus, nitrogen and sulfur oxides when heated to decomposition (Sax and Lewis, 1987; Lewis, 1990). Rapidly hydrolyzed in alkaline solutions to p-nitrophenol, alcohol and benzene thiophosphoric acid (Sittig, 1985).
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