# NIOSH Pocket Guide to Chemical Hazards
2-Hydroxypropyl acrylate | CAS 999-61-1
CH2=CHCOOCH2CHOHCH3 | RTECS AT1925000
Synonyms & Trade Names HPA, beta-Hydroxypropyl acrylate, Propylene glycol monoacrylate | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 0.5 ppm (3 mg/m3) [skin]
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 5.33 mg/m3
Physical Description Clear to light-yellow liquid wiith a sweetish, solvent odor.
MW: 130.2 | BP: 376°F | FRZ: ? | Sol: ?
VP: ? | IP: ? |  | Sp.Gr: 1.05
Fl.P: 149°F | UEL: ? | LEL: 1.8% |
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities Water [Note: Can become unstable at high temperatures & pressures or may react with water with some release of energy, but not violently.]
Measurement Methods None available
Personal Protection & Sanitation 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: Soap flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; eye, skin burns; cough, dyspnea (breathing difficulty)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION