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Dibutyl phosphate

Synonyms & Trade Names
Dibutyl acid o-phosphate, Di-n-butyl hydrogen phosphate, Dibutyl phosphoric acid
CAS No.
107-66-4
RTECS No.
TB9605000
DOT ID & Guide
Formula
(C4H9O)2(OH)PO
Conversion
1 ppm = 8.60 mg/m3
IDLH
30 ppm
See: 107664
Exposure Limits
NIOSH REL
: TWA 1 ppm (5 mg/m3) ST 2 ppm (10 mg/m3)
OSHA PEL
: TWA 1 ppm (5 mg/m3)
Measurement Methods

NIOSH 5017
See: NMAM or OSHA Methods
Physical Description
Pale-amber, odorless liquid.
MW:
210.2
BP:
212°F (Decomposes)
FRZ:
?
Sol:
Insoluble
VP:
1 mmHg (approx)
IP:
?
Sp.Gr:
1.06
Fl.P:
?
UEL:
?
LEL:
?
Combustible Liquid
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, respiratory system; headache
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
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
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

See also: INTRODUCTION   See ICSC CARD: 1278   See MEDICAL TESTS: 0070
 
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