# NIOSH Pocket Guide to Chemical Hazards
Butyl acrylate | CAS 141-32-2
CH2=CHCOOC4H9 | RTECS UD3150000
Synonyms & Trade Names n-Butyl acrylate, Butyl ester of acrylic acid, Butyl 2-propenoate | DOT ID & Guide 2348 129P
Exposure Limits | NIOSH REL: TWA 10 ppm (55 mg/m3)
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 5.24 mg/m3
Physical Description Clear, colorless liquid with a strong, fruity odor. [Note: Highly reactive; may contain an inhibitor to prevent spontaneous polymerization.]
MW: 128.2 | BP: 293°F | FRZ: -83°F | Sol: 0.1%
VP: 4 mmHg | IP: ? |  | Sp.Gr: 0.89
Fl.P: 103°F | UEL: 9.9% | LEL: 1.5% |
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities Strong acids & alkalis, amines, halogens, hydrogen compounds, oxidizers, heat, flame, sunlight [Note: Polymerizes readily on heating.]
Measurement Methods OSHA PV2011
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 wash 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, upper respiratory system; sensitization dermatitis; dyspnea (breathing difficulty)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION