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Propionic acid

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Synonyms & Trade Names
Carboxyethane, Ethanecarboxylic acid, Ethylformic acid, Metacetonic acid, Methyl acetic acid, Propanoic acid
CAS No.
79-09-4
RTECS No.
UE5950000
DOT ID & Guide
1848 132
Formula
CH₃CH₂COOH
Conversion
1 ppm = 3.03 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 10 ppm (30 mg/m3) ST 15 ppm (45 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Colorless, oily liquid with a pungent, disagreeable, rancid odor. [Note: A solid below 5°F.]
Molecular Weight
74.1
Boiling Point
286°F
Freezing Point
5°F
Solubility
Miscible
Vapor Pressure
3 mmHg
Ionization Potential
10.24 eV
Specific Gravity
0.99
Flash Point
126°F
Upper Explosive Limit
12.1%
Lower Explosive Limit
2.9%
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities
Alkalis, strong oxidizers (e.g., chromium trioxide) [Note: Corrosive to steel.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; blurred vision, corneal burns; skin burns; abdominal pain, nausea, vomiting
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

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0806
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health