1-Octadecanethiol |
Synonyms & Trade Names 1-Mercaptooctadecane, Octadecyl mercaptan, Stearyl mercaptan |
CAS No. 2885-00-9 |
RTECS No. |
DOT ID & Guide 1228 131 (liquid) |
FormulaCH3(CH2)17SH |
Conversion 1 ppm = 11.72 mg/m3 |
IDLH N.D.
See: IDLH INDEX |
Exposure Limits NIOSH REL: C 0.5 ppm (5.9 mg/m3) [15-minute]
OSHA PEL: none |
Measurement Methods
None available
See: NMAM or OSHA Methods |
Physical Description Solid or liquid (above 77°F). |
MW: 286.6 |
BP: ? |
MLT: 77°F |
Sol: Insoluble |
VP: ? |
IP: ? |
Sp.Gr: 0.85 |
Fl.P: ? |
UEL: ? |
LEL: ? |
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Combustible Solid
Combustible Liquid |
Incompatibilities & Reactivities Oxidizers, reducing agents, strong acids & bases, alkali metals |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, respiratory system; headache, dizziness, lassitude (weakness, exhaustion), cyanosis, nausea, convulsions |
Target Organs Eyes, skin, respiratory system, central nervous system, blood |
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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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH Up to 5 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)
(APF = 10) Any supplied-air respirator Up to 12.5 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s) Up to 25 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)
(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
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 1622
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