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Chemical Sampling Information (CSI)
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General Description

Synonyms: Triphenyls; ortho-Terphenyl; meta-Terphenyl; para-Terphenyl; Mixed terphenyls; Diphenyl benzenes; o-Terphenyl; p-Terphenyl

OSHA IMIS Code Number: 2335

Chemical Abstracts Service (CAS) Registry Number: 92-94-4

Other CAS: 92-06-8; 84-15-1

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: WZ6475000; 80297

NIOSH Pocket Guide to Chemical Hazards, p-Terphenyl: Chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:

colorless or light-yellow solid
molecular weight: 230
boiling point: 630 to 718°F
vapor pressure: Very low
melting point: 133 to 415°F

Exposure Limits

OSHA Permissible Exposure Limit (PEL):
General Industry: 1 ppm, 9 mg/m3 Ceiling

Construction Industry: 1 ppm, 9 mg/m3 Ceiling
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.53 ppm, 5 mg/m3 Ceiling

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.5 ppm Ceiling

Health Factors

Potential Symptoms: Eye, skin irritation; thermal skin burns; headache; sore throat

Health Effects: Irritation-Eye, Nose, Throat, Skin---Moderate (HE15) Cumulative liver and kidney damage (HE3) Cumulative lung damage (HE10)

Affected Organs: Skin, respiration system, eyes

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Glass Fiber filter (37 mm)
    analytical solvent: Benzene
    minimum time: 15 Minutes   
    maximum flow rate:     1.7 L/min (Ceiling)
    current analytical method: High Performance Liquid Chromatography; HPLC/FLU
    method reference: 2 (OSHA In-House File)
    sampling and analytical error: 0.16
    method classification: Partially Validated
    note: Immediately after sampling, transfer filter and backup pad to small screw cap bottle.
Conditions: Column: C18 Mobile Phase: 80:20 Acetonitrile: Water Detector Wavelength: Ex 284, Em 290 Detection Limit

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Page last updated: 11/19/1992