September 2010
NIOSH Publication Number 2010-168c

Benomyl

Synonyms & Trade Names
Methyl 1-(butylcarbamoyl)-2-benzimidazolecarbamate
CAS No.
17804-35-2
RTECS No.
DD6475000
DOT ID & Guide
2757 151 (carbamate pesticide, solid)
Formula
C14H18N4O3
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
: See Appendix D
OSHA PEL
†: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
Measurement Methods

NIOSH PV2107
Physical Description
White crystalline solid with a faint, acrid odor. [fungicide] [Note: Decomposes without melting above 572°F.]
MW:
290.4
BP:
Decomposes		 MLT: >572°F (Decomposes)
Sol:
0.0004%
VP:
<0.00001 mmHg
IP:
NA
Sp.Gr:
?
Fl.P:
NA
UEL:
NA
LEL:
NA
Noncombustible Solid
Incompatibilities & Reactivities
Heat, strong acids, strong alkalis
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; skin sensitization; possible reproductive, teratogenic effects
Target Organs
Eyes, skin, respiratory system, reproductive system
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
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

See also: INTRODUCTION   See ICSC CARD: 0382   See MEDICAL TESTS: 0071