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Chloroacetaldehyde

Synonyms & Trade Names
Chloroacetaldehyde (40% aqueous solution), 2-Chloroacetaldehyde, 2-Chloroethanal
CAS No.
107-20-0
RTECS No.
AB2450000
DOT ID & Guide
2232 153
Formula
ClCH₂CHO
Conversion
1 ppm = 3.21 mg/m3
IDLH
45 ppm
See: 107200
Exposure Limits
NIOSH REL
C 1 ppm (3 mg/m3)
OSHA PEL
C 1 ppm (3 mg/m3)
Measurement Methods
NIOSH 2015;
OSHA 76
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with an acrid, penetrating odor. [Note: Typically found as a 40% aqueous solution.]
Molecular Weight
78.5
Boiling Point
186°F
Freezing Point
-3°F (40% solution)
Solubility
Miscible
Vapor Pressure
100 mmHg
Ionization Potential
10.61 eV
Specific Gravity
1.19 (40% solution)
Flash Point
190°F (40% solution)
Upper Exposive Limit
?
Lower Explosive Limit
?
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
Oxidizers, acids
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation skin, eyes, mucous membrane; skin burns; eye damage; pulmonary edema; skin, respiratory system sensitization
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
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

NIOSH/OSHA

Up to 10 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*

Up to 25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*

Up to 45 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and 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 = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)*
(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 organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0706

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