# NIOSH Pocket Guide to Chemical Hazards
alpha-Chloroacetophenone | CAS 532-27-4
C6H5COCH2Cl | RTECS AM6300000
Synonyms & Trade Names 2-Chloroacetophenone, Chloromethyl phenyl ketone, Mace®, Phenacyl chloride, Phenyl chloromethyl ketone, Tear gas | DOT ID & Guide 1697 153
Exposure Limits | NIOSH REL: TWA 0.3 mg/m3 (0.05 ppm)
OSHA PEL: TWA 0.3 mg/m3 (0.05 ppm)
IDLH 15 mg/m3 | Conversion 1 ppm = 6.32 mg/m3
Physical Description Colorless to gray crystalline solid with a sharp, irritating odor.
MW: 154.6 | BP: 472°F | MLT: 134°F | Sol: Insoluble
VP: 0.005 mmHg | IP: 9.44 eV |  | Sp.Gr: 1.32
Fl.P: 244°F | UEL: ? | LEL: ? |
Combustible Solid
Incompatibilities & Reactivities Water, steam, strong oxidizers [Note: Slowly corrodes metals.]
Measurement Methods NIOSH P&CAM291 (II-5)
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 3 mg/m3: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s) in combination with a dust and mist filter/(APF = 10) Any supplied-air respirator Up to 7.5 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s) in combination with a dust and mist filter£ Up to 15 mg/m3: (APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s) in combination with a high-efficiency particulate filter/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern and having a high-efficiency particulate filter/(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 canister providing protection against the compound of concern and having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; pulmonary edema
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION