Skip directly to local search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

Enter search terms separated by spaces.

1,1-Dichloroethane

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.
MW:
99.0
BP:
135°F
FRZ:
-143°F
Sol:
0.6%
VP:
182 mmHg
IP:
11.06 eV
Sp.Gr:
1.18
Fl.P:
2°F
UEL:
11.4%
LEL:
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   See ICSC CARD: 0249
 
Contact Us:
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO