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Triphenyl phosphate

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Synonyms & Trade Names
Phenyl phosphate, TPP, Triphenyl ester of phosphoric acid
CAS No.
115-86-6
RTECS No.
TC8400000
DOT ID & Guide
Formula
(C₆H₅O)₃PO
Conversion
IDLH
1000 mg/m3
See: 115866
Exposure Limits
NIOSH REL
TWA 3 mg/m3
OSHA PEL
TWA 3 mg/m3
Measurement Methods
NIOSH 5038
See: NMAM or OSHA Methods
Physical Description
Colorless, crystalline powder with a phenol-like odor.
Molecular Weight
326.3
Boiling Point
776°F
Melting Point
120°F
Solubility
(129°F): 0.002%
Vapor Pressure
(380°F): 1 mmHg
Ionization Potential
?
Specific Gravity
1.29
Flash Point
428°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Solid
Incompatibilities & Reactivities
None reported
Exposure Routes
inhalation, ingestion
Symptoms
Minor changes in blood enzymes; In Animals: muscle weak, paralysis
Target Organs
Blood, peripheral nervous system
Personal Protection/Sanitation
(See protection codes)
Skin:No recommendation
Eyes:No recommendation
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
First Aid
(See procedures)


Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 15 mg/m3:
(APF = 5) Any quarter-mask respirator.
Click here for information on selection of N, R, or P filters.

Up to 30 mg/m3:
(APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100.
Click here for information on selection of N, R, or P filters.
(APF = 10) Any supplied-air respirator

Up to 75 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate filter.

Up to 150 mg/m3:


(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters. 


(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Up to 1000 mg/m3:
(APF = 1000) Any supplied-air respirator 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 with 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   ICSC CARD: 1062
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health