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o-Terphenyl

RTECS #
WZ6472000
CAS #
84-15-1
See: NMAM or OSHA Methods
Updated
April 2012
Molecular Weight
230.32
Molecular Formula
C18H14
Synonyms
1,1':2',1''-Terphenyl (9CI)
1,2-Diphenylbenzene

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
oral/rat lethal dose (50 percent kill): 1900 mg/kgGastrointestinal: Hypermotility, diarrhea

Skin and Appendages: Other: Hair
AIHAAP 23,372,1962
oral/rat lethal dose (50 percent kill): 2000 mg/kgLiver: Changes in liver weightVCVGH* -,214,1990
oral/rat lethal dose (50 percent kill): 1900 mg/kgBehavioral: Rigidity (includes catalepsy)

Gastrointestinal: Hypermotility, diarrhea
HPV353 -,-,2003

Other Multiple Dose Data and References

Route/OrganismDoseEffectReference
oral/rat lowest published toxic dose: 15 gm/kg/30D- continuousNutritional and Gross Metabolic: Weight loss or decreased weight gainAIHAAP 23,372,1962
oral/rat lowest published toxic dose: 7500 mg/kg/30D- continuousLiver: Changes in liver weight

Kidney, Ureter, and Bladder: Changes in kidney weight

Nutritional and Gross Metabolic: Weight loss or decreased weight gain
HPV353 -,,2003
oral/rat lowest published toxic dose: 1680 mg/kg/14D- continuousKidney, Ureter, and Bladder: Changes in kidney weight

Endocrine: Changes in adrenal weight

Nutritional and Gross Metabolic: Weight loss or decreased weight gain
HPV353 -,,2003

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airceiling concentration 1 ppm (9 mg/m3)DTLWS* 3,28,1973
Occupational Exposure Limit-DENMARKtime-weighted average 0.5 ppm (5 mg/m3), MAY2011
Occupational Exposure Limit-ICELANDtime-weighted average 0.5 ppm (5 mg/m3), NOV2011
Occupational Exposure Limit-MEXICOpeak 0.5 ppm, 2004
Occupational Exposure Limit-UNITED KINGDOMshort term exposure limit 0.5 ppm (4.8 mg/m3), OCT2007

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
NIOSH Analytical Method, 1994: o-Terphenyl, 5021
Page last reviewed: November 16, 2018