tert-Butyl alcohol |
Synonyms & Trade Names 2-Methyl-2-propanol, Trimethyl carbinol |
CAS No. 75-65-0 |
RTECS No. EO1925000 |
DOT ID & Guide 1120 129 |
Formula(CH3)3COH |
Conversion 1 ppm = 3.03 mg/m3 |
IDLH 1600 ppm
See: 75650 |
Exposure Limits NIOSH REL: TWA 100 ppm (300 mg/m3) ST 150 ppm (450 mg/m3)
OSHA PEL†: TWA 100 ppm (300 mg/m3) |
Measurement Methods
NIOSH 1400;
OSHA 7
See: NMAM or OSHA Methods |
Physical Description Colorless solid or liquid (above 77°F) with a camphor-like odor. [Note: Often used in aqueous solutions.] |
MW: 74.1 |
BP: 180°F |
FRZ: 78°F |
Sol: Miscible |
VP(77°F): 42 mmHg |
IP: 9.70 eV |
Sp.Gr: 0.79 (Solid) |
Fl.P: 52°F |
UEL: 8.0% |
LEL: 2.4% |
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| Combustible Solid Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F. |
Incompatibilities & Reactivities Strong mineral acids, strong hydrochloric acid, oxidizers |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, nose, throat; drowsiness, narcosis |
Target Organs Eyes, skin, respiratory system, central nervous system |
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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 (flammable)
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH/OSHA Up to 1600 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)£
(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 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: 0114
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