NAME: EPN
SYNONYM(s):
o-Ethyl-o-p-nitrophenyl phenylphosphonothioate; Ethyl p-nitrophenyl
benzenethiophosphonate
IMIS: 1019
CAS: 2104-64-5
NIOSH: RTECS TB1925000; 58524
DESCRIPTION:
Yellow solid or brown liquid.
MW:
323
VP:
0.0003 mm at 212 F
MP:
36 C
INCOM:
Strong oxidizers
Exposure Limits
OSHA GENERAL INDUSTRY PEL:
0.5 mg/m3 (Skin)
OSHA CONSTRUCTION INDUSTRY PEL:
0.5 mg/m3 TWA (Skin)
ACGIH TLV:
0.1 mg/m3 TWA (Skin); Appendix A4 (Not Classifiable as a Human
Carcinogen)
NIOSH REL: 0.5 mg/m3 TWA (Skin)
Health Factors
SYMPTOM(s):
Miosis, lacrimation; rhinorrhea; headaches; tight chest, wheezing,
laryngeal spasms; salivation; cyanosis; anorexia; nausea, abdominal
cramps, diarrhea; paralysis, convulsions; low blood pressure;
cardiac irregularities; eye, skin irritation
HEALTH EFFECTS:
Cholinesterase inhibition (HE6); LD50 (oral, rat) 26 mg/kg
ORGAN:
Respiratory system, CVS, CNS, eyes, skin, blood cholinestera
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg sections, 20/60 mesh) with Glass Fiber Filter enclosed
ANL SOLVENT:
Toluene
MAX V:
480 Liters MAX F:
1.0 L/min
ANL 1:
Gas Chromatography; GC/FPD
REF:
2 (OSHA In-House File)
CLASS:
Partially Validated
NOTE:
OSHA personnel may obtain sampling tubes from SLTC.
WIPE:
Yes, with Glass Fiber Filter
BULK METHOD:
Limit the amount of bulk submitted to one gram or one mL.
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