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| Acetaldehyde | CAS 75-07-0 | ||
| CH3CHO | RTECS AB1925000 | ||
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Synonyms & Trade Names Acetic aldehyde, Ethanal, Ethyl aldehyde |
DOT ID & Guide 1089 129 |
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Exposure Limits |
NIOSH REL: Ca See Appendix A See Appendix C (Aldehydes) | ||
| OSHA PEL�: TWA 200 ppm (360 mg/m3) | |||
| IDLH Ca [2000 ppm] | Conversion 1 ppm = 1.80 mg/m3 | ||
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Physical Description Colorless liquid or gas (above 69°F) with a pungent, fruity odor. |
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MW: 44.1 |
BP: 69°F |
FRZ: -190°F |
Sol: Miscible |
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VP: 740 mmHg |
IP: 10.22 eV |
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Sp.Gr: 0.79 |
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Fl.P: -36°F |
UEL: 60% |
LEL: 4.0% |
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| Class IA Flammable Liquid: Fl.P. below 73�F and BP below 100�F. | |||
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Incompatibilities & Reactivities Strong oxidizers, acids, bases, alcohols, ammonia & amines, phenols, ketones, HCN, H2S [Note: Prolonged contact with air may cause formation of peroxides that may explode and burst containers; easily undergoes polymerization.] |
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Measurement Methods NIOSH 2538; OSHA 68 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash, Quick drench |
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 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 |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, nose, throat; eye, skin burns; dermatitis; conjunctivitis; cough; central nervous system depression; delayed pulmonary edema; in animals: kidney, reproductive, teratogenic effects; [potential occupational carcinogen] | |
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Target Organs
Eyes, skin, respiratory system, kidneys, central nervous system, reproductive system Cancer Site [in animals: nasal cancer] |
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| See also: INTRODUCTION |