September 2010
NIOSH Publication Number 2010-168c

Carbaryl

Synonyms & Trade Names
α-Naphthyl N-methyl-carbamate, 1-Naphthyl N-Methyl-carbamate, Sevin®
CAS No.
63-25-2
RTECS No.
FC5950000
DOT ID & Guide
2757 151
Formula
CH3NHCOOC10H7
Conversion
IDLH
100 mg/m3
See: 63252
Exposure Limits
NIOSH REL
: TWA 5 mg/m3
OSHA PEL
: TWA 5 mg/m3
Measurement Methods

NIOSH 63
Physical Description
White or gray, odorless solid. [pesticide]
MW:
201.2
BP:
Decomposes		 MLT: 293°F
Sol:
0.01%		 VP(77°F): <0.00004 mmHg
IP:
?
Sp.Gr:
1.23
Fl.P:
NA
UEL:
NA
LEL:
NA
Noncombustible Solid, but may be dissolved in flammable liquids.
Incompatibilities & Reactivities
Strong oxidizers, strongly alkaline pesticides
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Miosis, blurred vision, tear; rhinorrhea (discharge of thin nasal mucus), salivation; sweating; abdominal cramps, nausea, vomiting, diarrhea; tremor; cyanosis; convulsions; irritation skin; possible reproductive effects
Target Organs
respiratory system, central nervous system, cardiovascular system, skin, blood cholinesterase, 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
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 50 mg/m3:
(APF = 10) Any supplied-air respirator*

Up to 100 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0121   See MEDICAL TESTS: 0037