NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

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. See: IDLH INDEX
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 140F and below 200F.
Incompatibilities & Reactivities

Strong acids & alkalis, copper-containing compounds [Note: Hydrolyzes slowly in water & dilute acid.]
Measurement Methods
NIOSH 5600; OSHA 62
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: 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
Not available.
Important additional information about respirator selection
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   See ICSC CARD: 0137