|WTT User's Guide|
|ρsat/ρ = 1 - C×ln[(B + p)/(B + psat)]|
|B = ∑biti, i ∈ [0, nterms,b - 1]|
|C = ∑citi, i ∈ [0, nterms,c - 1]|
|t = (T - Tcent)/100|
where ρsat = density of saturated liquid, psat = saturation vapor pressure and Tcent = a fit constant
The basis for this functional form is discussed in .
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The TRC Group is part of the Thermophysical Properties Division in NIST's Material Measurement Laboratory
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