Isopropyl ether

Synonyms & Trade Names

Diisopropyl ether, Diisopropyl oxide, 2-Isopropoxy propane

CAS No.

108-20-3

RTECS No.

TZ5425000

DOT ID & Guide

1159 127

Formula

(CH₃)₂CHOCH(CH₃)₂

Conversion

1 ppm = 4.18 mg/m³

IDLH

1400 ppm [10%LEL]
See: 108203

Exposure Limits

NIOSH REL

TWA 500 ppm (2100 mg/m³)

OSHA PEL

TWA 500 ppm (2100 mg/m³)

Measurement Methods

NIOSH 1618;
OSHA 7
See: NMAM or OSHA Methods

Physical Description

Colorless liquid with a sharp, sweet, ether-like odor.

Molecular Weight

102.2

Boiling Point

154°F

Freezing Point

-76°F

Solubility

0.2%

Vapor Pressure

119 mmHg

Ionization Potential

9.20 eV

Specific Gravity

0.73

Flash Point

-18°F

Upper Explosive Limit

7.9%

Lower Explosive Limit

1.4%

Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.

Incompatibilities & Reactivities

Strong oxidizers, acids [Note: Unstable peroxides may form on long contact with air.]

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, nose; resp discomfort; dermatitis; In Animals: drowsiness, dizziness, unconsciousness, narcosis

Target Organs

Eyes, skin, respiratory system, 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 wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH/OSHA

Up to 1400 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 25) Any powered, air-purifying respirator with 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 = 10) Any supplied-air respirator*
(APF = 50) Any self-contained breathing apparatus 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

Isopropyl ether

NIOSH REL

OSHA PEL

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