Table 2. Limiting Apparent Molar Volumes, V_ϕ⁰, and Experimental Slopes, S_V, of Glycols in the Aqueous Solution of Niacin at Different Temperatures.

	Vϕ0 × 106/(m3·mol–1)				SV* × 106/(m3·kg·mol–2)
mB/(mol·kg–1)a	T = 293.15 K	T = 298.15 K	T = 303.15 K	T = 308.15 K	T = 293.15 K	T = 298.15 K	T = 303.15 K	T = 308.15 K
PG
0.00000	73.49 (±0.005)	73.51 (±0.010)	73.53 (±0.008)	73.57 (±0.005)b	0.51 (±0.014)	0.49 (±0.030)	0.49 (±0.025)	0.48 (±0.016)b
0.01000	73.23 (±0.032)	73.34 (±0.047)	73.22 (±0.068)	73.77 (±0.057)	0.89 (±0.098)	0.61 (±0.142)	0.92 (±0.206)	0.08 (±0.172)
0.03000	73.35 (±0.056)	73.35 (±0.045)	73.31 (±0.074)	73.89 (±0.062)	0.22 (±0.169)	0.25 (±0.137)	0.38 (±0.223)	–0.37 (±0.187)
0.05000	73.44 (±0.028)	73.15 (±0.045)	73.44 (±0.051)	74.05 (±0.045)	–0.40 (±0.086)	0.40 (±0.137)	–0.12 (±0.155)	–0.77 (±0.137)
HG
0.00000	116.35 (±0.001)	116.37 (±0.001)	116.40 (±0.001)	116.43 (±0.001)b	0.22 (±0.005)	0.25 (±0.005)	0.22 (±0.002)	0.24 (±0.005)b
0.01000	116.29 (±0.031)	116.12 (±0.066)	116.46 (±0.054)	116.17 (±0.024)	0.14 (±0.094)	0.49 (±0.200)	–0.01 (±0.164)	0.58 (±0.074)
0.03000	116.22 (±0.023)	115.57 (±0.081)	116.11 (±0.028)	115.91 (±0.106)	–0.20 (±0.099)	1.08 (±0.245)	–0.04 (±0.084)	0.63 (±0.319)
0.05000	115.99 (±0.062)	115.38 (±0.085)	115.67 (±0.091)	115.68 (±0.127)	–0.17 (±0.188)	1.27 (±0.257)	0.21 (±0.274)	0.36 (±0.382)

^am_B is the molality of aqueous niacin, standard uncertainties u are u(m) = 2 × 10^–5 mol·kg^–1, u(T) = 0.03K, u(ρ) = 0.06 (kg·m^–3), u(p) = 0.01MPa, u(c) = 0.6 m·s^–1, u(V_ϕ⁰) = ±0.01×10⁶/(m³·mol^–1), and u( S_V) = ±0.03×10⁶/(m³·mol^–2).