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Synonyms: o,o-Diethyl-o-p-nitrophenyl phosphorothioate; O,O-diethyl O-(p-nitrophenyl) ester Phosphorothioic acid; Diethyl parathion; Ethyl parathion; Parathion-ethyl
OSHA IMIS Code Number: 1984
Chemical Abstracts Service (CAS) Registry Number: 56-38-2
NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TF4550000
Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2783 152
NIOSH Pocket Guide to Chemical Hazards, Parathion: chemical description, physical properties, potentially hazardous incompatibilities, and more
OSHA Permissible Exposure Limit (PEL):
General Industry: 29 CFR 1910.1000 Z-1 Table -- 0.1 mg/m3; SkinAmerican Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.05 mg/m3 TWA - Inhalable fraction, Vapor and aerosol; Skin; Appendix A4 - Not Classifiable as a Human Carcinogen; BEI
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.05 mg/m3 TWA; Skin
International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans [98 KB PDF, 37 pages]NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 10 mg/m3
Potential Symptoms: Irritation of eyes, skin, respiratory system; miosis, blurring or dimness of vision; rhinorrhea; headache; chest tightness, wheezing, laryngeal spasm; salivation; cyanosis; anorexia; nausea, vomiting, abdominal cramps, diarrhea; sweating; muscle fasciculation, lassitude (weakness, exhaustion), paralysis; dizziness, confusion, ataxia; convulsions, coma; low blood pressure; cardiac irregularities.
Health Effects: Cholinesterase inhibition (HE6); Suspect teratogen (HE5)
Affected Organs: Eyes, skin, respiratory system, CNS, cardiovascular system, blood cholinesterase
Laboratory Sampling/Analytical Method:
Wipe Sampling Method:
Bulk Method: Limit the amount of bulk submitted to one gram or one mL.
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