Ethylene oxide |
Synonyms & Trade Names Dimethylene oxide; 1,2-Epoxy ethane; Oxirane |
CAS No. 75-21-8 |
RTECS No. KX2450000 |
DOT ID & Guide 1040 119P |
FormulaC2H4O |
Conversion 1 ppm = 1.80 mg/m3 |
IDLH Ca [800 ppm]
See: 75218 |
Exposure Limits NIOSH REL: Ca TWA <0.1 ppm (0.18 mg/m3) C 5 ppm (9 mg/m3) [10-min/day] See Appendix A
OSHA PEL: [1910.1047] TWA 1 ppm 5 ppm [15-minute Excursion] |
Measurement Methods
NIOSH 1614 , 3800;
OSHA 30 , 49 , 50
See: NMAM or OSHA Methods |
Physical Description Colorless gas or liquid (below 51°F) with an ether-like odor. |
MW: 44.1 |
BP: 51°F |
FRZ: -171°F |
Sol: Miscible |
VP: 1.46 atm |
IP: 10.56 eV |
Sp.Gr: 0.82 (Liquid at 50°F) |
Fl.P: NA (Gas) -20°F (Liquid) |
UEL: 100% |
LEL: 3.0% |
RGasD: 1.49 |
|
| Flammable Gas |
Incompatibilities & Reactivities Strong acids, alkalis & oxidizers; chlorides of iron, aluminum & tin; oxides of iron & aluminum; water |
Exposure Routes inhalation, ingestion, (liquid), skin and/or eye contact |
Symptoms irritation eyes, skin, nose, throat; peculiar taste; headache; nausea, vomiting, diarrhea; dyspnea (breathing difficulty), cyanosis, pulmonary edema; drowsiness, lassitude (weakness, exhaustion), incoordination; EKG abnormal; eye, skin burns (liquid or high vapor concentration); liquid: frostbite; reproductive effects; [potential occupational carcinogen]; in animals: convulsions; liver, kidney damage |
Target Organs Eyes, skin, respiratory system, liver, central nervous system, blood, kidneys, reproductive system |
Cancer Site[peritoneal cancer, leukemia] |
Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact (liquid)
Eyes: Prevent eye contact (liquid)
Wash skin: When contaminated (liquid)
Remove: When wet (flammable)
Change: No recommendation
Provide: Quick drench (liquid) |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately (liquid) |
Respirator Recommendations (See Appendix E)
NIOSH Up to 5 ppm:
(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†
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions:
(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
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0155 See MEDICAL TESTS: 0106 |
