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| Dibutyl phosphate | CAS 107-66-4 | ||
| (C4H9O)2(OH)PO | RTECS TB9605000 | ||
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Synonyms & Trade Names Dibutyl acid o-phosphate, Di-n-butyl hydrogen phosphate, Dibutyl phosphoric acid |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 1 ppm (5 mg/m3) ST 2 ppm (10 mg/m3) | ||
| OSHA PEL†: TWA 1 ppm (5 mg/m3) | |||
| IDLH 30 ppm See: 107664 | Conversion 1 ppm = 8.60 mg/m3 | ||
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Physical Description Pale-amber, odorless liquid. |
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MW: 210.2 |
BP: 212°F (Decomposes) |
FRZ: ? |
Sol: Insoluble |
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VP: 1 mmHg (approx) |
IP: ? |
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Sp.Gr: 1.06 |
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Fl.P: ? |
UEL: ? |
LEL: ? |
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| Combustible Liquid | |||
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Incompatibilities & Reactivities Strong oxidizers |
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Measurement Methods NIOSH 5017 See: NMAM or OSHA Methods |
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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 Provide: Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection Respirator Recommendations NIOSH/OSHA Up to 10 ppm: (APF = 10) Any supplied-air respirator Up to 25 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode Up to 30 ppm: (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode/(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 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 | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION See ICSC CARD: 1278 See MEDICAL TESTS: 0070 |