# NIOSH Pocket Guide to Chemical Hazards
Methyl (n-amyl) ketone | CAS 110-43-0
CH3CO[CH2]4CH3 | RTECS MJ5075000
Synonyms & Trade Names Amyl methyl ketone, n-Amyl methyl ketone, 2-Heptanone | DOT ID & Guide 1110 127
Exposure Limits | NIOSH REL: TWA 100 ppm (465 mg/m3)
OSHA PEL: TWA 100 ppm (465 mg/m3)
IDLH 800 ppm | Conversion 1 ppm = 4.67 mg/m3
Physical Description Colorless to white liquid with a banana-like, fruity odor.
MW: 114.2 | BP: 305°F | FRZ: -32°F | Sol: 0.4%
VP: 3 mmHg | IP: 9.33 eV |  | Sp.Gr: 0.81
Fl.P: 102°F | UEL(250°F): 7.9% | LEL(151°F): 1.1% |
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities Strong acids, alkalis & oxidizers [Note: Will attack some forms of plastic.]
Measurement Methods NIOSH 1301
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: Soap wash Breathing: Fresh air Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 800 ppm: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*/(APF = 25) Any powered, air-purifying respirator with 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 = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus 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
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, mucous membrane; headache; narcosis, coma; dermatitis
Target Organs Eyes, skin, respiratory system, central nervous system, peripheral nervous system
See also: INTRODUCTION