Paratherm™ HT has hydrogenated terphenyl chemistry and is formulated for closed-loop, liquid-phase heating to 650°F in fired heaters and 675°F in waste-heat recovery and full convection heaters used in gas processing, plastic/chemical production, waste-oil recovery, and biodiesel industries. Along with density of 8.34 lb/gal @25°C, properties include 700°F max film temperature, 52.0°F min startup temperature (300 cSt), and respective kinematic viscosities of 32.0 and 4.2 cSt at 40 and 100°C.