Dibutyl phosphate
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CAS
107-66-4
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(C4H9O)2(OH)PO
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RTECS
TB9605000
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Synonyms & Trade Names
Dibutyl acid o-phosphate, Di-n-butyl hydrogen phosphate, Dibutyl phosphoric acid
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 1 ppm (5 mg/m3) ST 2 ppm (10 mg/m3)
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OSHA PEL†: TWA 1 ppm (5 mg/m3)
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IDLH
30 ppm
See: 107664
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Conversion
1 ppm = 8.60 mg/m3
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Physical Description
Pale-amber, odorless liquid.
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MW: 210.2
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BP: 212°F (Decomposes)
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FRZ: ?
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Sol: Insoluble
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VP: 1 mmHg (approx)
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IP: ?
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Sp.Gr: 1.06
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Fl.P: ?
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UEL: ?
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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 |
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
Provide: Quick drench
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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/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 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
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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
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