Morpholine
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CAS
110-91-8
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C4H9ON
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RTECS
QD6475000
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Synonyms & Trade Names
Diethylene imidoxide; Diethylene oximide; Tetrahydro-1,4-oxazine; Tetrahydro-p-oxazine
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DOT ID & Guide
2054 / 132
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Exposure
Limits
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NIOSH REL: TWA 20 ppm (70 mg/m3) ST 30 ppm (105 mg/m3) [skin]
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OSHA PEL†: TWA 20 ppm (70 mg/m3) [skin]
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IDLH
1400 ppm [10%LEL]
See: 110918
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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
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BP: 264°F
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FRZ: 23°F
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Sol: Miscible
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VP: 6 mmHg
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IP: 8.88 eV
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Sp.Gr: 1.007
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Fl.P(oc): 98°F
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UEL: 11.2%
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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)
See: NMAM or OSHA Methods |
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: Eyewash (>15%), Quick drench (>25%)
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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
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
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
See ICSC CARD: 0302 |
