# NIOSH Pocket Guide to Chemical Hazards
Chloroacetyl chloride | CAS 79-04-9
ClCH2COCl | RTECS AO6475000
Synonyms & Trade Names Chloroacetic acid chloride, Chloroacetic chloride, Monochloroacetyl chloride | DOT ID & Guide 1752 156
Exposure Limits | NIOSH REL: TWA 0.05 ppm (0.2 mg/m3)
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 4.62 mg/m3
Physical Description Colorless to yellowish liquid with a strong, pungent odor.
MW: 112.9 | BP: 223°F | FRZ: -7°F | Sol: Decomposes
VP: 19 mmHg | IP: 10.30 eV |  | Sp.Gr: 1.42
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Liquid
Incompatibilities & Reactivities Water, alcohols, bases, metals (corrosive), amines [Note: Decomposes in water to form chloroacetic acid & hydrogen chloride gas.]
Measurement Methods None available
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; eye, skin burns; cough, wheezing, dyspnea (breathing difficulty); lacrimation (discharge of tears)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION