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Propylene oxide |
CAS 75-56-9 | ||
C3H6O |
RTECS TZ2975000 | ||
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Synonyms & Trade Names 1,2-Epoxy propane; Methyl ethylene oxide; Methyloxirane; Propene oxide; 1,2-Propylene oxide |
DOT ID & Guide 1280 127P |
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Exposure
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NIOSH REL: Ca See Appendix A | ||
| OSHA PEL†: TWA 100 ppm (240 mg/m3) | |||
| IDLH Ca [400 ppm] See: 75569 | Conversion 1 ppm = 2.38 mg/m3 | ||
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Physical Description Colorless liquid with a benzene-like odor. [Note: A gas above 94°F.] |
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MW: 58.1 |
BP: 94°F |
FRZ: -170°F |
Sol: 41% |
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VP: 445 mmHg |
IP: 9.81 eV |
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Sp.Gr: 0.83 |
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Fl.P: -35°F |
UEL: 36% |
LEL: 2.3% |
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| Class IA Flammable Liquid: Fl.P. below 73°F and BP below 100°F. | |||
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Incompatibilities & Reactivities Anhydrous metal chlorides; iron; strong acids, caustics & peroxides [Note: Polymerization may occur due to high temperatures or contamination with alkalis, aqueous acids, amines & acidic alcohols.] |
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Measurement Methods NIOSH 1612; OSHA 88 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation (See protection) Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection 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 canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, respiratory system; skin blisters, burns; [potential occupational carcinogen] | |
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Target Organs
Eyes, skin, respiratory system Cancer Site [in animals: nasal tumors] |
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| See also: INTRODUCTION See ICSC CARD: 0192 |