# NIOSH Pocket Guide to Chemical Hazards
Diazinon® | CAS 333-41-5
C12H21N2O3PS | RTECS TF3325000
Synonyms & Trade Names Basudin®; Diazide®; O,O-Diethyl-O-2-isopropyl-4-methyl-6-pyrimidinyl-phosphorothioate; Spectracide® | DOT ID & Guide 2783 152
Exposure Limits | NIOSH REL: TWA 0.1 mg/m3 [skin]
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Colorless liquid with a faint ester-like odor. [insecticide] [Note: Technical grade is pale to dark brown.]
MW: 304.4 | BP: Decomposes | FRZ: ? | Sol: 0.004%
VP: 0.0001 mmHg | IP: ? |  | Sp.Gr: 1.12
Fl.P: 180°F | UEL: ? | LEL: ? |
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities Strong acids & alkalis, copper-containing compounds [Note: Hydrolyzes slowly in water & dilute acid.]
Measurement Methods NIOSH 5600; OSHA 62
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash 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; miosis, blurred vision; dizziness, confusion, lassitude (weakness, exhaustion), convulsions; dyspnea (breathing difficulty); salivation, abdominal cramps, nausea, vomiting
Target Organs Eyes, respiratory system, central nervous system, cardiovascular system, blood cholinesterase
See also: INTRODUCTION