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1,1-Dichloroethane

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Synonyms & Trade Names
Asymmetrical dichloroethane, Ethylidene chloride, 1,1-Ethylidene dichloride
CAS No.
75-34-3
RTECS No.
KI0175000
DOT ID & Guide
2362 130
Formula
CHCl₂CH₃
Conversion
1 ppm = 4.05 mg/m3
IDLH
3000 ppm
See: 75343
Exposure Limits
NIOSH REL
TWA 100 ppm (400 mg/m3) See Appendix C (Chloroethanes)
OSHA PEL
TWA 100 ppm (400 mg/m3)
Measurement Methods
NIOSH 1003;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless, oily liquid with a chloroform-like odor.
Molecular Weight
99.0
Boiling Point
135°F
Freezing Point
-143°F
Solubility
0.6%
Vapor Pressure
182 mmHg
Ionization Potential
11.06 eV
Specific Gravity
1.18
Flash Point
2°F
Upper Explosive Limit
11.4%
Lower Explosive Limit
5.4%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Strong oxidizers, strong caustics
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation skin; central nervous system depression; liver, kidney, lung damage
Target Organs
Skin, liver, kidneys, lungs, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet (flammable)
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap flush promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 1000 ppm:
(APF = 10) Any supplied-air respirator

Up to 2500 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode

Up to 3000 ppm:
(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: 0249
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health