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| | terphenyl Basic information |
| Product Name: | terphenyl | | Synonyms: | terphenyl;ORTHO,META-PARA-TERPHENYL(MIXTURE);TERPHENYLS;delowax om;delowax s;diphenylbenzene;gilotherm om 2;santowax om | | CAS: | 26140-60-3 | | MF: | C18H14 | | MW: | 230.30376 | | EINECS: | 247-477-3 | | Product Categories: | | | Mol File: | 26140-60-3.mol |  |
| | terphenyl Chemical Properties |
| Melting point | 210-211 °C | | Boiling point | 307.3°C (rough estimate) | | density | 1.0829 (estimate) | | refractive index | 1.5500 (estimate) | | form | Colorless or light yellow
solids | | Dielectric constant | 2.3（21.0℃） | | EPA Substance Registry System | Terphenyl (26140-60-3) |
| OEL | STEL: 0.5 ppm; 5.0 mg/m3 | | TSCA | TSCA listed |
| | terphenyl Usage And Synthesis |
| Chemical Properties | There are multiple isomeric terphenyls, all having the formula C6H5-C6H4-C6H5. Pure terphenyl is a white, crystalline solid. The commercial grades are light yellow. All three isomers are unusually stable toward heat. | | Uses | Coolant for heat exchange in nuclear
reactors | | Health Hazard | Terphenyls are irritants of the
eyes, mucous membranes, and skin. | | Flammability and Explosibility | Non flammable | | Safety Profile | Moderately toxic by ingestion. Combustible when exposed to heat or flame. To fight fire, use water, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. | | Potential Exposure | Terphenyl is used primarily as a plasticizer and heat transfer agent. It is also used as a high-temperature lubricant; a constituent of waxes and polishes; as a plasticizer for resinbodied paints; as a coolant and heat storage agent. | | Shipping | UN3151 Polyhalogenated biphenyls, liquid or Polyhalogenated terphenyls liquid, Hazard class: 9; Labels: 9-Miscellaneous hazardous material. UN3152 Polyhalogenated biphenyls, solid or Polyhalogenated terphenylssolid, Hazard class: 9; Labels: 9-Miscellaneous hazardous material. | | Incompatibilities | Materials are combustible. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. | | Waste Disposal | Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed. |
| | terphenyl Preparation Products And Raw materials |
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