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| Diacetone alcohol | CAS 123-42-2 | ||
| CH3COCH2C(CH3)2OH | RTECS SA9100000 | ||
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Synonyms & Trade Names Diacetone, 4-Hydroxy-4-methyl-2-pentanone, 2-Methyl-2-pentanol-4-one |
DOT ID & Guide 1148 129 |
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Exposure Limits |
NIOSH REL: TWA 50 ppm (240 mg/m3) | ||
| OSHA PEL: TWA 50 ppm (240 mg/m3) | |||
| IDLH 1800 ppm [10%LEL] | Conversion 1 ppm = 4.75 mg/m3 | ||
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Physical Description Colorless liquid with a faint, minty odor. |
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MW: 116.2 |
BP: 334°F |
FRZ: -47°F |
Sol: Miscible |
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VP: 1 mmHg |
IP: ? |
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Sp.Gr: 0.94 |
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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. | |||
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Incompatibilities & Reactivities Strong oxidizers, strong alkalis |
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Measurement Methods NIOSH 1402; OSHA 7 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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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 |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, nose, throat; corneal damage; in animals: narcosis, liver damage | |
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Target Organs
Eyes, skin, respiratory system, central nervous system, liver |
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| See also: INTRODUCTION |