Acrolein

Synonyms & Trade Names

Acraldehyde, Acrylaldehyde, Acrylic aldehyde, Allyl aldehyde, Propenal, 2-Propenal

CAS No.

107-02-8

RTECS No.

AS1050000

DOT ID & Guide

1092 131P(inhibited)

Formula

CH₂=CHCHO

Conversion

1 ppm = 2.29 mg/m³

IDLH

2 ppm
See: 107028

Exposure Limits

NIOSH REL

TWA 0.1 ppm (0.25 mg/m³) ST 0.3 ppm (0.8 mg/m³) See Appendix C (Aldehydes)

OSHA PEL

TWA 0.1 ppm (0.25 mg/m³) See Appendix G

Measurement Methods

NIOSH 2501;
OSHA 52
See: NMAM or OSHA Methods

Physical Description

Colorless or yellow liquid with a piercing, disagreeable odor.

Molecular Weight

56.1

Boiling Point

127°F

Freezing Point

-126°F

Solubility

40%

Vapor Pressure

210 mmHg

Ionization Potential

10.13 eV

Specific Gravity

0.84

Flash Point

-15°F

Upper Explosive Limit

31%

Lower Explosive Limit

2.8%

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

Incompatibilities & Reactivities

Oxidizers, acids, alkalis, ammonia, amines [Note: Polymerizes readily unless inhibited--usually with hydroquinone. May form shock-sensitive peroxides over time.]

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, mucous membrane; decreased pulmonary function; delayed pulmonary edema; chronic resp disease

Target Organs

Eyes, skin, respiratory system, heart

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
Provide:Eyewash, Quick drench

First Aid

(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately

Respirator Recommendations

NIOSH/OSHA

Up to 2 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*
(APF = 50) Any chemical cartridge respirator with a full facepiece and 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 = 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

Acrolein

NIOSH REL

OSHA PEL

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