# NIOSH Pocket Guide to Chemical Hazards
Dioxathion | CAS 78-34-2
C4H6O2[SPS(OC2H5)2]2 | RTECS TE3350000
Synonyms & Trade Names Delnav®; p-Dioxane-2,3-diyl ethyl phosphorodithioate; Dioxane phosphate; 2,3-p-Dioxanethiol S,S-bis(O,O-diethyl phosphoro-dithioate); Navadel® | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 0.2 mg/m3 [skin]
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Viscous, brown, tan, or dark-amber liquid. [insecticide] [Note: Technical product is a mixture of cis- & trans-isomers.]
MW: 456.6 | BP: ? | FRZ: -4°F | Sol: Insoluble
VP: ? | IP: ? |  | Sp.Gr(79°F): 1.26
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Liquid
Incompatibilities & Reactivities Alkalis, iron or tin surfaces, heat
Measurement Methods None available
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, 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 Irritation eyes, skin; headache, dizziness, lassitude (weakness, exhaustion); rhinorrhea (discharge of thin mucus), chest tightness; miosis; nausea, vomiting, abdominal cramps, diarrhea, salivation; muscle fasciculation; confusion, drowsiness
Target Organs Eyes, skin, respiratory system, central nervous system, cardiovascular system, blood cholinesterase
See also: INTRODUCTION