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| beta-Propiolactone | CAS 57-57-8 | ||
| C3H4O2 | 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-Propiolacetone |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: Ca See Appendix A | ||
| OSHA PEL: [1910.1013] See Appendix B | |||
| IDLH Ca [N.D] | Conversion | ||
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Physical Description Colorless liquid with a slightly sweet odor. |
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MW: 72.1 |
BP: 323°F (Decomposes) |
FRZ: -28°F |
Sol: 37% |
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VP(77°F): 3 mmHg |
IP: ? |
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Sp.Gr: 1.15 |
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Fl.P: 165°F |
UEL: ? |
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 |
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Personal Protection & Sanitation 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 |
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Respirator Recommendations
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 |
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| 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] | |
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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 |