# NIOSH Pocket Guide to Chemical Hazards
2,2-Dichloropropionic acid | CAS 75-99-0
CH3CCl2COOH | RTECS UF0690000
Synonyms & Trade Names Dalapon; 2,2-Dichloropropanoic acid; alpha,alpha-Dichloropropionic acid | DOT ID & Guide 1760 154
Exposure Limits | NIOSH REL: TWA 1 ppm (6 mg/m3)
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 5.85 mg/m3
Physical Description Colorless liquid with an acrid odor. [herbicide] [Note: A white to tan powder below 46°F. The sodium salt, a white powder, is often used.]
MW: 143.0 | BP: 374°F | FRZ: 46°F | Sol: 50%
VP: ? | IP: ? |  | Sp.Gr: 1.40
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Liquid
Incompatibilities & Reactivities Metals [Note: Very corrosive to aluminum & copper alloys. Reacts slowly in water to form hydrochloric & pyruvic acids.]
Measurement Methods OSHA PV2017
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 wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, upper respiratory system; skin burns; lassitude (weakness, exhaustion), loss of appetite, diarrhea, vomiting, slowing of pulse; central nervous system depression
Target Organs Eyes, skin, respiratory system, gastrointestinal tract, central nervous system
See also: INTRODUCTION