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| Morpholine | CAS 110-91-8 | ||
| C4H9ON | RTECS QD6475000 | ||
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Synonyms & Trade Names Diethylene imidoxide; Diethylene oximide; Tetrahydro-1,4-oxazine; Tetrahydro-p-oxazine |
DOT ID & Guide 1760 154 (aqueous) 2054 132 |
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Exposure Limits |
NIOSH REL: TWA 20 ppm (70 mg/m3) ST 30 ppm (105 mg/m3) [skin] | ||
| OSHA PEL�: TWA 20 ppm (70 mg/m3) [skin] | |||
| IDLH 1400 ppm [10%LEL] | Conversion 1 ppm = 3.56 mg/m3 | ||
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Physical Description Colorless liquid with a weak, ammonia- or fish-like odor. [Note: A solid below 23°F.] |
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MW: 87.1 |
BP: 264°F |
FRZ: 23°F |
Sol: Miscible |
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VP: 6 mmHg |
IP: 8.88 eV |
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Sp.Gr: 1.007 |
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Fl.P(oc): 98°F |
UEL: 11.2% |
LEL: 1.4% |
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| Class IC Flammable Liquid: Fl.P. at or above 73�F and below 100�F. | |||
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Incompatibilities & Reactivities Strong acids, strong oxidizers, metals, nitro compounds [Note: Corrosive to metals.] |
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Measurement Methods NIOSH S150 (II-3) |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash (>15%), Quick drench (>25%) |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH/OSHA Up to 500 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode�/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)� Up to 1000 ppm: (APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)�/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 1400 ppm: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode 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 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 Irritation eyes, skin, nose, respiratory system; visual disturbance; cough; in animals: liver, kidney damage | |
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Target Organs
Eyes, skin, respiratory system, liver, kidneys |
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| See also: INTRODUCTION |