beta-Propiolactone
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CAS
57-57-8
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C3H4O2
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RTECS
RQ7350000
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Synonyms & Trade Names
BPL; Hydroacrylic acid, beta-lactone; 3-Hydroxy-beta-lactone; 3-Hydroxy-propionic acid; beta-Lactone; 2-Oxetanone; 3-Propiolactone
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: Ca See Appendix A
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OSHA PEL: [1910.1013] See Appendix B
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IDLH
Ca [N.D]
See: IDLH INDEX
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Conversion
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Physical Description
Colorless liquid with a slightly sweet odor.
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MW: 72.1
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BP: 323°F (Decomposes)
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FRZ: -28°F
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Sol: 37%
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VP(77°F): 3 mmHg
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IP: ?
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Sp.Gr: 1.15
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Fl.P: 165°F
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UEL: ?
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LEL: 2.9%
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Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
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Incompatibilities & Reactivities
Acetates, halogens, thiocyanates, thiosulfates [Note: May polymerize upon storage.]
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Measurement Methods
None available
See: NMAM or OSHA Methods
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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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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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 canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Skin irritation, blistering, burns; corneal opacity; frequent urination; dysuria; hematuria (blood in the urine); [potential occupational carcinogen]
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Target Organs
Kidneys, skin, lungs, eyes
Cancer Site
[in animals: tumors of the liver, skin & stomach]
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See also: INTRODUCTION
See ICSC CARD: 0555 See MEDICAL TESTS: 0197
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