EPN

  • Phenylphosphonothic acid, O-ethyl O-(4-nitrophenyl) ester
  • O-Ethyl O-4-nitrophenyl phenyl phosphonothioate
  • Ethyl p-Nitrophenyl benzenethionophosphonate
Formula
C14H14NO4PS
Structure
Description
Light yellow crystalline powder with an aromatic odor.
Uses
Insecticide.

Registry Numbers and Inventories.
CAS
2104-64-5
EC (EINECS/ELINCS)
218-276-8
EC Index Number
015-036-00-2
EC Class
Very toxic; Dangerous for the Environment
RTECS
TB1925000
RTECS class
Agricultural Chemical and Pesticide; Drug; Reproductive Effector; Primary Irritant
UN (DOT)
2783
Merck
12,3663
Beilstein/Gmelin
2542580
Beilstein Reference
4-16-00-01089
EPA OPP
41801
Swiss Giftliste 1
G-1615
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C14H14NO4PS
Formula mass
323.31
Melting point, °C
36
Boiling point, °C
434
Vapor pressure, mmHg
3E-7 (25 C)
Density
1.275 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.5978 (20 C)
Partition coefficient, pKow
3.85
Heat of vaporization
66.4 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and open flame. Keep container closed. Store at 65-100F.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Ventilate area of spill. Cover with soda ash, mix, and spray with water. Place in container of water and allow to stand for 2 days, then neutralize with 6 molar hydrochloric acid.
Stability
Stable in neutral and acidic media but hydrolyzed by alkali. Stable at ordinary temperatures.
Incompatibilities
Avoid contact with strong oxidizers. Incompatible with alkaline pesticides.
Decomposition
Dangerous when heated to decomposition, emits highly toxic fumes of sulfur oxides, phosphorus oxides and nitrogen oxides.

Fire.
Flash Point,°C
216
Fire fighting
(Non-Specific -- Organophosphorus Pesticide, n.o.s.) Stay upwind; keep out of low areas. Move containers from fire area if you can do it without risk. Fight fire from maximum distance. Dike fire control water for later disposal; do not scatter the material. Wear positive pressure breathing apparatus and special protective clothing.(Non-Specific -- Organophosphorus Pesticide, n.o.s.) For small fires, use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam.
Fire potential
This material may burn but does not ignite readily.
Hazards
This material Container may explode in heat of fire. Fire and runoff from fire control water may produce irritating or poisonous gases. Avoid strong oxidizers. Hydrolyzed by alkali.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3

Health.
Exposure limit(s)
TLV: ppm; 0.1 mg/m3 (as TWA) (skin) (ACGIH 1997). MAK: ppm; 0.5 mg/m3; III, H (1996). OSHA PEL: TWA 0.5 mg/m3 skin NIOSH REL: TWA 0.5 mg/m3 skin NIOSH IDLH: 5 mg/m3
Poison_Class
2
Exposure effects
Fever, low heart rate and abnormally low blood pressure, or rapid heart rate and elevated blood pressure may occur. Headache, dizziness, muscle spasms and profound weakness are common. Alterations of level of consciousness, anxiety, paralysis, seizures and coma may occur. Seizures may be more common in children.
   Ingestion
Vomiting, hypersalivation, diarrhea, fecal incontinence and abdominal pain may occur.
   Inhalation
Dyspnea, rales, bronchorrhea, bronchospasm, or tachypnea may be noted. Noncardiogenic pulmonary edema may occur in severe cases. Chemical pneumonitis may be seen.
   Skin
Sweating is a consistent but not universal sign.
   Eyes
Constriction of the pupil, tearing, and blurred vision are common. Prolonged dialation of the pupils may occur in severe poisonings. Opsoclonus has been reported in one case. Salivation commonly occurs.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2783
Response guide
Hazard class
6.1
Packing Group
I; II; III