o-terphenyl

Independent reference data for o-terphenyl (CAS 84-15-1), compiled from public chemistry databases.

Registry identifiers across databases

Computed descriptors

Physicochemical values on record

Documented uses on record

Terphenyl mixtures are used as heat transfer media, dye carriers, and in the production of lubricants; [ACGIH]Terphenyl mixtures are used industrially as heat storage and transfer agents, as textile dye carriers, and as intermediates in the production of nonspreading lubricants. From 1960-1970, technical grade terphenyls were used as coolants for nuclear reactors, whereas contemporary use has been in solar-heating systems. /Terphenyl mixtures/

Synonyms and trade names

O-TERPHENYL; 84-15-1; 1,2-Diphenylbenzene; 1,1':2',1''-Terphenyl; ortho-terphenyl; 2-Phenylbiphenyl; 1,1'-Biphenyl, 2-phenyl-; CCRIS 1655; DTXSID1049697; HSDB 2538; NSC 6809; EINECS 201-517-6; W5675R7KVW; AI3-01402; NSC-6809; TERPHENYL, O-

GHS hazard classification

Reported hazard statements	H302 (100%), H315 (84.5%), H319 (84.5%), H335 (91.4%), H400 (74.1%), H331

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

H315 (84.5%): Causes skin irritation [Warning Skin corrosion/irritation]

What the public record says

o-terphenyl · CAS 84-15-1 · C18H14. UNII W5675R7KVW. Boiling Point: 630 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 332 °C AT 760 MM HG; Boiling Point: 332 °C.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.