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Chlorpyrifos

Synonyms & Trade Names
Chlorpyrifos-ethyl; O,O-Diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate; Dursban®
CAS No.
2921-88-2
RTECS No.
TF6300000
DOT ID & Guide
2783 152
Formula
C9H11Cl3NO3PS
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
: TWA 0.2 mg/m3 ST 0.6 mg/m3 [skin]
OSHA PEL
†: none
Measurement Methods

NIOSH 5600;
OSHA 62
See: NMAM or OSHA Methods
Physical Description
Colorless to white, crystalline solid with a mild, mercaptan-like odor. [pesticide] [Note: Commercial formulations may be combined with combustible liquids.]
MW:
350.6
BP:
320°F (Decomposes)		 MLT: 108°F
Sol:
0.0002%
VP:
0.00002 mmHg
IP:
?
Sp.Gr:
1.40 (Liquid at 110°F)
Fl.P:
?
UEL:
?
LEL:
?
Combustible Solid
Incompatibilities & Reactivities
Strong acids, caustics, amines [Note: Corrosive to copper & brass.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
wheezing, laryngeal spasms, salivation; bluish lips, skin; miosis, blurred vision; nausea, vomiting, abdominal cramps, diarrhea
Target Organs
respiratory system, central nervous system, peripheral nervous system, plasma cholinesterase
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily
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

See also: INTRODUCTION   See ICSC CARD: 0851
 

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