Tributyl phosphate
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CAS
126-73-8
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(CH3[CH2]3O)3PO
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RTECS
TC7700000
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Synonyms & Trade Names
Butyl phosphate, TBP, Tributyl ester of phosphoric acid, Tri-n-butyl phosphate
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 0.2 ppm (2.5 mg/m3)
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OSHA PEL†: TWA 5 mg/m3
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IDLH
30 ppm
See: 126738
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Conversion
1 ppm = 10.89 mg/m3
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Physical Description
Colorless to pale-yellow, odorless liquid.
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MW: 266.3
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BP: 552°F (Decomposes)
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FRZ: -112°F
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Sol: 0.6%
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VP(77°F): 0.004 mmHg
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IP: ?
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Sp.Gr: 0.98
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Fl.P(oc): 295°F
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UEL: ?
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LEL: ?
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Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
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Incompatibilities & Reactivities
Alkalis, oxidizers, water, moist air
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Measurement Methods
NIOSH 5034
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 or contaminated
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 2 ppm:
(APF = 10) Any supplied-air respirator
Up to 5 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 10 ppm:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 30 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 having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, respiratory system, headache; nausea
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0584 |
