NIOSH Pocket Guide to Chemical Hazards

Phorate			CAS 298-02-2
(C₂H₅O)₂P(S)SCH₂SC₂H₅			RTECS TD9450000
Synonyms & Trade Names O,O-Diethyl S-(ethylthio)methylphosphorodithioate; O,O-Diethyl S-ethylthiomethylthiothionophosphate; Thimet; Timet			DOT ID & Guide 3018 152 (organophosphorus pesticide, liquid, toxic)

Exposure Limits	NIOSH REL: TWA 0.05 mg/m³ ST 0.2 mg/m³ [skin]
	OSHA PEL†: none
IDLH N.D. See: IDLH INDEX		Conversion

Physical Description Clear liquid with a skunk-like odor. [insecticide]
MW: 260.4	BP: ?	FRZ: -45°F	Sol: 0.005%
VP: 0.0008 mmHg	IP: ?		Sp.Gr(77°F): 1.16
Fl.P(oc): 320°F	UEL: ?	LEL: ?
Class IIIB Combustible Liquid, but does not readily ignite.
Incompatibilities & Reactivities Water, alkalis [Note: Hydrolyzed in the presence of moisture and by alkalis.]

Measurement Methods
NIOSH 5600
See: NMAM or OSHA Methods

Personal Protection & Sanitation (See protection) 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
Important additional information about respirator selection Respirator Recommendations Not available.
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; miosis; rhinorrhea (discharge of thin mucus); 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
Target Organs Eyes, skin, respiratory system, central nervous system, cardiovascular system, blood cholinesterase

See also: INTRODUCTION See ICSC CARD: 1060