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Propylene glycol monomethyl ether

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Synonyms & Trade Names
Dowtherm® 209, 1-Methoxy-2-hydroxypropane, 2-Methoxy-1-methylethanol, 1-Methoxy-2-propanol, Propylene glycol methyl ether
CAS No.
107-98-2
RTECS No.
UB7700000
DOT ID & Guide
Formula
CH₃OCH₂CHOHCH₃
Conversion
1 ppm = 3.69 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 100 ppm (360 mg/m3) ST 150 ppm (540 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
NIOSH 2554;
OSHA 99
See: NMAM or OSHA Methods
Physical Description
Clear, colorless liquid with a mild, ethereal odor.
Molecular Weight
90.1
Boiling Point
248°F
Freezing Point
-139°F (Sets to glass)
Solubility
Miscible
Vapor Pressure
(77°F): 12 mmHg
Ionization Potential
?
Specific Gravity
0.96
Flash Point
97°F
Upper Explosive Limit
(calc): 13.8%
Lower Explosive Limit
(calc.): 1.6%
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
Oxidizers, strong acids [Note: Hygroscopic (i.e., absorbs moisture from the air). May slowly form reactive peroxides during prolonged storage.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; headache, nausea, dizziness, drowsiness, incoordination; vomiting, diarrhea
Target Organs
Eyes, skin, respiratory system, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin:No recommendation
Eyes:Prevent eye contact
Wash skin:No recommendation
Remove:When wet (flammable)
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water wash
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0551
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health