# NIOSH Pocket Guide to Chemical Hazards
Fenamiphos | CAS 22224-92-6
C13H22NO3PS | RTECS TB3675000
Synonyms & Trade Names Ethyl 3-methyl-4-(methylthio)phenyl-(1-methylethyl)phosphoramidate, Nemacur®, Phenamiphos | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 0.1 mg/m3 [skin]
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Off-white to tan, waxy solid. [insecticide] [Note: Found commercially as a granular ingredient (5-15%) or in an emulsifiable concentrate (400 g/l).]
MW: 303.4 | BP: ? | MLT: 121°F | Sol: 0.03%
VP: 0.00005 mmHg | IP: ? |  | Sp.Gr: 1.14
Fl.P: ? | UEL: ? | LEL: ? |
Incompatibilities & Reactivities None reported [Note: May hydrolyze under alkaline conditions.]
Measurement Methods NIOSH 5600
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated/Daily Remove: When wet or contaminated Change: Daily Provide: Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Nausea, vomiting, abdominal cramps, diarrhea, salivation; headache, dizziness, lassitude (weakness, exhaustion); rhinorrhea (discharge of thin mucus), chest tightness; blurred vision, miosis; cardiac irregularities; muscle fasciculation; dyspnea (breathing difficulty)
Target Organs respiratory system, central nervous system, cardiovascular system, blood cholinesterase
See also: INTRODUCTION