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beta-Propiolactone																				Related Pages
Synonyms & Trade Names
			BPL, Hydroacrylic acid, β-lactone, 3-Hydroxy-β-lactone, 3-Hydroxy-propionic acid, β-Lactone, 2-Oxetanone, 3-Propiolactone
CAS No.
			57-57-8
	RTECS No.
			RQ7350000
	DOT ID & Guide

FormulaC3H4O2
	Conversion
	IDLH
			Ca [N.D]See: IDLH INDEX

Exposure Limits
			NIOSH RELCa See Appendix A
					OSHA PEL [1910.1013] See Appendix B
	Measurement Methods
			None available 
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless liquid with a slightly sweet odor.													
										
Molecular Weight72.1	
	Boiling Point323°F (Decomposes)
	Freezing Point-28°F
	Solubility37%
	Vapor Pressure(77°F): 3 mmHg
	Ionization Potential?											
Specific Gravity1.15	
	Flash Point165°F
	Upper Explosive Limit?
	Lower Explosive Limit2.9%
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
			Acetates, halogens, thiocyanates, thiosulfates
					[Note: May polymerize upon storage.]
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			Skin irritation, blistering, burns; corneal opacity; frequent urination; dysuria; hematuria (blood in the urine); [potential occupational carcinogen]
Target Organs
			Kidneys, skin, lungs, eyes
Cancer Site[in animals: tumors of the liver, skin & stomach]										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact
							**Eyes:**Prevent eye contact
							**Wash skin:**When contaminated/Daily
							**Remove:**When wet or contaminated
							**Change:**Daily
							**Provide:**Eyewash, Quick drench
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash immediately
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			(See Appendix E)**NIOSH****At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:** (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 canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0555
					  MEDICAL TESTS: 0197

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Chemical Names, Synonyms and Trade Names
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
CAS Numbers
RTECS Numbers
Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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