NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Dicrotophos

CAS
141-66-2

C8H16NO5P

RTECS
TC3850000
Synonyms & Trade Names

Bidrin®; Carbicron®; 2-Dimethyl-cis-2-dimethylcarbamoyl-1-methylvinylphosphate
DOT ID & Guide

Exposure
Limits

NIOSH REL: TWA 0.25 mg/m3 [skin]
OSHA PEL: none
IDLH
N.D. See: IDLH INDEX
Conversion
1 ppm = 9.70 mg/m3
Physical Description
Yellow-brown liquid with a mild, ester odor. [insecticide]
MW: 237.2
BP: 752°F
FRZ: ?
Sol: Miscible
VP: 0.0001 mmHg
IP: ?

Sp.Gr(59°F): 1.22
Fl.P: >200°F
UEL: ?
LEL: ?

Class IIIB Combustible Liquid: Fl.P. at or above 200F.
Incompatibilities & Reactivities

Metals [Note: Corrosive to cast iron, mild steel, brass & stainless steel.]
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: Daily
Provide: Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Water 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
Headache, nausea, dizziness, anxiety, restlessness, muscle twitching, lassitude (weakness, exhaustion), tremor, incoordination, vomiting, abdominal cramps, diarrhea; salivation, sweating, lacrimation (discharge of tears), rhinitis; anorexia, malaise (vague feeling of discomfort)
Target Organs
central nervous system, blood cholinesterase
See also: INTRODUCTION   See ICSC CARD: 0872