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
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

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