NIOSH Pocket Guide to Chemical Hazards

Acrylic acid

CAS 79-10-7


RTECS AS4375000
Synonyms & Trade Names
Acroleic acid, Aqueous acrylic acid (technical grade is 94%), Ethylenecarboxylic acid, Glacial acrylic acid (98% in aqueous solution), 2-Propenoic acid
DOT ID & Guide
2218 132P (inhibited)


NIOSH REL: TWA 2 ppm (6 mg/m3) [skin]
OSHA PEL: none
IDLH N.D. See: IDLH INDEX Conversion 1 ppm = 2.95 mg/m3
Physical Description
Colorless liquid or solid (below 55°F) with a distinctive, acrid odor. [Note: Shipped with an inhibitor (e.g., hydroquinone) since it readily polymerizes.]
MW: 72.1
BP: 286°F
FRZ: 55°F
Sol: Miscible
VP: 3 mmHg
IP: ?

Sp.Gr: 1.05
Fl.P: 121°F
UEL: 8.02%
LEL: 2.4%

Class II Combustible Liquid: Fl.P. at or above 100F and below 140F.
Incompatibilities & Reactivities
Oxidizers, amines, alkalis, ammonium hydroxide, chloro-sulfonic acid, oleum, ethylene diamine, ethyleneimine, 2-aminoethanol [Note: Corrosive to many metals.]
Measurement Methods
OSHA 28, PV2005
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
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
Important additional information about respirator selection
Respirator Recommendations Not available.
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; eye, skin burns; skin sensitization; in animals: lung, liver, kidney injury
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION   See ICSC CARD: 0688