NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Captan

CAS
133-06-2

C9H8Cl3NO2S

RTECS
GW5075000
Synonyms & Trade Names

Captane; N-Trichloromethylmercapto-4-cyclohexene-1,2-dicarboximide
DOT ID & Guide

Exposure
Limits

NIOSH REL: Ca TWA 5 mg/m3 See Appendix A
OSHA PEL: none
IDLH
Ca [N.D.] See: IDLH INDEX
Conversion
Physical Description
Odorless, white, crystalline powder. [fungicide] [Note: Commercial product is a yellow powder with a pungent odor.]
MW: 300.6
BP: Decomposes
MLT: 352°F (Decomposes)
Sol(77°F): 0.0003%
VP: 0 mmHg (approx)
IP: NA

Sp.Gr: 1.74
Fl.P: ?
UEL: ?
LEL: ?

Combustible Solid; may be dissolved in flammable liquids.
Incompatibilities & Reactivities

Strong alkaline materials (e.g., hydrated lime) [Note: Corrosive to metals.]
Measurement Methods
NIOSH 5601, 9202, 9205
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
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
NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, upper respiratory system; blurred vision; dermatitis, skin sensitization; dyspnea (breathing difficulty); diarrhea, vomiting; [potential occupational carcinogen]
Target Organs
Eyes, skin, respiratory system, gastrointestinal tract, liver, kidneys

Cancer Site
[in animals: duodenal tumors]
See also: INTRODUCTION   See ICSC CARD: 0120