o-Terphenyl
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CAS
84-15-1
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C6H5C6H4C6H5
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RTECS
WZ6472000
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Synonyms & Trade Names
o-Diphenylbenzene; 1,2-Diphenylbenzene; 2-Phenylbiphenyl; 1,2-Terphenyl; ortho-Terphenyl; o-Triphenyl
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: C 5 mg/m3 (0.5 ppm)
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OSHA PEL†: C 9 mg/m3 (1 ppm)
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IDLH
500 mg/m3
See: IDLH INDEX
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Conversion
1 ppm = 9.42 mg/m3
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Physical Description
Colorless or light-yellow solid.
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MW: 230.3
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BP: 630°F
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MLT: 136°F
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Sol: Insoluble
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VP(200°F): 0.09 mmHg
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IP: 7.99 eV
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Sp.Gr: 1.1
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Fl.P(oc): 325°F
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UEL: ?
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LEL: ?
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Combustible Solid
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Incompatibilities & Reactivities
None reported
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Measurement Methods
NIOSH 5021
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: Daily
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 25 mg/m3:
(APF = 5) Any quarter-mask respirator. Click here for information on selection of N, R, or P filters.£
Up to 50 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 125 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 250 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 self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 500 mg/m3:
(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 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
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, mucous membrane; thermal skin burns; headache; sore throat; in animals: liver, kidney damage
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Target Organs
Eyes, skin, respiratory system, liver, kidneys
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