NIOSH Pocket Guide to Chemical Hazards

Chloroacetyl chloride

CAS 79-04-9


RTECS AO6475000
Synonyms & Trade Names
Chloroacetic acid chloride, Chloroacetic chloride, Monochloroacetyl chloride
DOT ID & Guide
1752 156


NIOSH REL: TWA 0.05 ppm (0.2 mg/m3)
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX 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

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
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
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
Important additional information about respirator selection
Respirator Recommendations Not available.
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   See ICSC CARD: 0845