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| Tributyl phosphate | CAS 126-73-8 | ||
| (CH3[CH2]3O)3PO | RTECS TC7700000 | ||
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Synonyms & Trade Names Butyl phosphate, TBP, Tributyl ester of phosphoric acid, Tri-n-butyl phosphate |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 0.2 ppm (2.5 mg/m3) | ||
| OSHA PEL�: TWA 5 mg/m3 | |||
| IDLH 30 ppm | 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 |
BP: 552°F (Decomposes) |
FRZ: -112°F |
Sol: 0.6% |
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VP(77°F): 0.004 mmHg |
IP: ? |
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Sp.Gr: 0.98 |
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Fl.P(oc): 295°F |
UEL: ? |
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 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation |
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 a high-efficiency particulate filter/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, headache; nausea | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION |