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. 2024 Aug 19;14(36):26246–26258. doi: 10.1039/d4ra03782k

Thermophysical properties of Therminol VP-1 reported by manufacturer and OM65, RT64HC, stearic acid and [N4444+][Cl] measured in this paper. ρ denotes the liquid density; η, viscosity; Tm, melting temperature; hm melting enthalpy; cp specific heat capacity and λ, thermal conductivity.

OM65 RT64HC Stearic acid [N4444+][Cl] Therminol VP-1a
Applicability temperature range liquid (K) 341.5–499.6 339.6–475.4 343.4–492.6 346.4–439.7 285 to 673
ρ (kg m−3) 921 (294 K) 891 (293 K) 938 (287 K) 1050 (293 K)a 1060 (298 K)
η (mPa s) At 353 K 7.82 6.61 7.92 89.7 1.28
At 373 K 5.21 4.06 5.28 37.7 0.99
T m (K) 341.5 339.6 343.4 346.4 285
h m (kJ kg−1) 203 252 214 29.2 97.3
c p at 353 K (kJ kg−1 K−1) 2.80 3.00 2.59 1.80 1.719
λ (W m−1 K−1) At ambient temperature 0.281 (293 K) 0.274 (294 K) 0.270 (293 K) 0.164 (290 K)
At 345 K 0.195b 0.192b 0.229b 0.256c 0.131
a

Data reported by manufacturer.

b

Data calculated using eqn (8) and the parameters Table 12.

c

Interpolates from the data in Table 13.