Diacetone alcohol |
Synonyms & Trade Names Diacetone, 4-Hydroxy-4-methyl-2-pentanone, 2-Methyl-2-pentanol-4-one |
CAS No. 123-42-2 |
RTECS No. SA9100000 |
DOT ID & Guide 1148 129 |
FormulaCH3COCH2C(CH3)2OH |
Conversion 1 ppm = 4.75 mg/m3 |
IDLH 1800 ppm [10%LEL]
See: 123422 |
Exposure Limits NIOSH REL: TWA 50 ppm (240 mg/m3)
OSHA PEL: TWA 50 ppm (240 mg/m3) |
Measurement Methods
NIOSH 1402 , 1405;
OSHA 7
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a faint, minty odor. |
MW: 116.2 |
BP: 334°F |
FRZ: -47°F |
Sol: Miscible |
VP: 1 mmHg |
IP: ? |
Sp.Gr: 0.94 |
Fl.P: 125°F |
UEL: 6.9% |
LEL: 1.8% |
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| Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F. |
Incompatibilities & Reactivities Strong oxidizers, strong alkalis |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, nose, throat; corneal damage; in animals: narcosis, liver damage |
Target Organs Eyes, skin, respiratory system, central nervous system, liver |
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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: 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 1250 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 1800 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: 0647 See MEDICAL TESTS: 0067 |
