Table 5.

Experimental speed of sound data for the R-1234ze(E)/227ea mixtures

$x_1\mathbf{/mole\; frac}$	$x_2\mathbf{/mole\; frac}$	$u_{\text{c}}\left(x_1\right)\mathbf{/mole\; frac}$	T/K	p/MPa	w/m∙s−1	$U_{\text{c}}(w)$/%
0.33265	0.66737	0.00023	230.010	0.370	736.85	0.040
0.33265	0.66737	0.00023	235.012	0.457	715.38	0.041
0.33265	0.66737	0.00023	240.001	0.462	693.46	0.043
0.33265	0.66737	0.00023	245.003	0.469	671.70	0.044
0.33265	0.66737	0.00023	250.004	0.465	650.04	0.046
0.33265	0.66737	0.00023	254.995	0.458	628.53	0.048
0.33265	0.66737	0.00023	259.987	0.471	607.24	0.051
0.33265	0.66737	0.00023	269.992	3.351	588.48	0.052
0.33265	0.66737	0.00023	274.995	6.712	594.84	0.050
0.33265	0.66737	0.00023	279.999	10.082	601.22	0.049
0.33265	0.66737	0.00023	285.000	13.433	607.45	0.047
0.33265	0.66737	0.00023	290.002	16.668	612.91	0.046
0.33265	0.66737	0.00023	294.997	19.952	618.72	0.045
0.33265	0.66737	0.00023	299.998	23.210	624.35	0.044
0.33265	0.66737	0.00023	304.997	26.420	629.72	0.043
0.33265	0.66737	0.00023	309.999	29.616	635.01	0.042
0.33265	0.66737	0.00023	314.994	32.783	640.19	0.041
0.33265	0.66737	0.00023	320.005	35.925	645.23	0.041
0.33265	0.66737	0.00023	325.010	39.103	650.48	0.040
0.33265	0.66737	0.00023	330.000	42.303	655.89	0.039
0.33265	0.66737	0.00023	335.003	45.456	661.01	0.039
0.33265	0.66737	0.00023	340.008	48.628	666.24	0.039
0.33265	0.66737	0.00023	274.991	3.582	570.38	0.055
0.33265	0.66737	0.00023	279.996	6.857	577.23	0.052
0.33265	0.66737	0.00023	284.997	10.129	583.99	0.050
0.33265	0.66737	0.00023	289.999	13.388	590.58	0.049
0.33265	0.66737	0.00023	294.995	16.634	597.03	0.047
0.33265	0.66737	0.00023	299.997	19.861	603.31	0.046
0.33265	0.66737	0.00023	304.996	23.080	609.49	0.045
0.33265	0.66737	0.00023	309.998	26.280	615.51	0.044
0.33265	0.66737	0.00023	314.994	29.441	621.29	0.043
0.33265	0.66737	0.00023	320.002	32.633	627.19	0.042
0.33265	0.66737	0.00023	325.008	35.791	632.89	0.041
0.33265	0.66737	0.00023	330.000	38.917	638.43	0.041
0.33265	0.66737	0.00023	335.003	41.992	643.65	0.040
0.33265	0.66737	0.00023	340.007	45.084	648.96	0.039
0.33265	0.66737	0.00023	345.013	48.160	654.19	0.039
0.33265	0.66737	0.00023	269.987	0.427	564.48	0.057
0.33265	0.66737	0.00023	274.990	0.887	547.36	0.060
0.33265	0.66737	0.00023	279.995	4.051	554.51	0.057
0.33265	0.66737	0.00023	284.997	7.216	561.58	0.054
0.33265	0.66737	0.00023	289.999	10.386	568.56	0.052
0.33265	0.66737	0.00023	294.995	13.539	575.34	0.050
0.33265	0.66737	0.00023	299.997	16.693	582.02	0.049
0.33265	0.66737	0.00023	304.993	19.799	588.33	0.047
0.33265	0.66737	0.00023	309.998	22.889	594.43	0.046
0.33265	0.66737	0.00023	314.992	25.989	600.59	0.045
0.33265	0.66737	0.00023	320.002	29.081	606.63	0.044
0.33265	0.66737	0.00023	325.008	32.153	612.51	0.043
0.33265	0.66737	0.00023	329.999	35.201	618.26	0.042
0.33265	0.66737	0.00023	335.001	38.214	623.77	0.041
0.33265	0.66737	0.00023	340.008	41.230	629.27	0.041
0.33265	0.66737	0.00023	345.013	44.228	634.66	0.040
0.33265	0.66737	0.00023	279.993	0.975	527.12	0.064
0.33265	0.66737	0.00023	284.995	3.998	534.47	0.060
0.33265	0.66737	0.00023	289.998	7.035	541.78	0.057
0.33265	0.66737	0.00023	294.994	10.056	548.85	0.055
0.33265	0.66737	0.00023	299.996	13.128	556.12	0.053
0.33265	0.66737	0.00023	304.995	16.175	563.14	0.051
0.33265	0.66737	0.00023	309.997	19.195	569.83	0.049
0.33265	0.66737	0.00023	314.993	22.200	576.33	0.048
0.33265	0.66737	0.00023	320.003	25.195	582.67	0.046
0.33265	0.66737	0.00023	325.007	28.171	588.82	0.045
0.33265	0.66737	0.00023	329.999	31.120	594.79	0.044
0.33265	0.66737	0.00023	335.002	34.026	600.43	0.043
0.33265	0.66737	0.00023	340.008	36.936	606.06	0.043
0.33265	0.66737	0.00023	345.013	39.848	611.67	0.042
0.33265	0.66737	0.00023	284.994	0.925	505.60	0.069
0.33265	0.66737	0.00023	289.997	3.800	513.12	0.065
0.33265	0.66737	0.00023	294.993	6.684	520.55	0.061
0.33265	0.66737	0.00023	299.994	9.524	527.43	0.059
0.33265	0.66737	0.00023	304.994	12.394	534.42	0.056
0.33265	0.66737	0.00023	309.997	15.271	541.34	0.054
0.33265	0.66737	0.00023	314.992	18.133	548.04	0.052
0.33265	0.66737	0.00023	320.002	20.996	554.62	0.050
0.33265	0.66737	0.00023	325.008	23.843	561.00	0.049
0.33265	0.66737	0.00023	329.999	26.667	567.19	0.047
0.33265	0.66737	0.00023	335.005	29.464	573.11	0.046
0.33265	0.66737	0.00023	340.007	32.254	578.94	0.045
0.33265	0.66737	0.00023	345.013	35.038	584.69	0.044
0.33265	0.66737	0.00023	289.996	0.986	485.10	0.074
0.33265	0.66737	0.00023	294.993	3.735	492.94	0.070
0.33265	0.66737	0.00023	299.993	6.490	500.58	0.066
0.33265	0.66737	0.00023	304.994	9.299	508.47	0.062
0.33265	0.66737	0.00023	309.996	12.075	515.88	0.059
0.33265	0.66737	0.00023	314.992	14.830	522.96	0.057
0.33265	0.66737	0.00023	320.002	17.582	529.82	0.055
0.33265	0.66737	0.00023	325.007	20.318	536.45	0.053
0.33265	0.66737	0.00023	329.999	23.036	542.79	0.051
0.33265	0.66737	0.00023	335.001	25.715	548.91	0.049
0.33265	0.66737	0.00023	340.008	28.405	554.95	0.048
0.33265	0.66737	0.00023	345.012	31.087	560.88	0.047
0.33265	0.66737	0.00023	294.991	1.091	465.10	0.081
0.33265	0.66737	0.00023	299.993	3.721	473.25	0.075
0.33265	0.66737	0.00023	304.992	6.347	481.07	0.071
0.33265	0.66737	0.00023	309.995	8.983	488.72	0.067
0.33265	0.66737	0.00023	314.991	11.611	496.09	0.063
0.33265	0.66737	0.00023	320.001	14.242	503.27	0.060
0.33265	0.66737	0.00023	325.006	16.854	510.15	0.058
0.33265	0.66737	0.00023	330.000	19.503	517.17	0.056
0.33265	0.66737	0.00023	335.002	22.092	523.63	0.053
0.33265	0.66737	0.00023	340.006	24.669	529.88	0.052
0.33265	0.66737	0.00023	345.012	27.238	535.98	0.050
0.33265	0.66737	0.00023	299.992	1.009	442.88	0.089
0.33265	0.66737	0.00023	304.993	3.494	451.20	0.083
0.33265	0.66737	0.00023	309.995	5.961	459.03	0.077
0.33265	0.66737	0.00023	314.990	8.434	466.60	0.073
0.33265	0.66737	0.00023	320.000	10.921	474.06	0.069
0.33265	0.66737	0.00023	325.007	13.407	481.32	0.065
0.33265	0.66737	0.00023	329.997	15.871	488.25	0.062
0.33265	0.66737	0.00023	335.003	18.295	494.68	0.060
0.33265	0.66737	0.00023	340.007	20.733	501.07	0.057
0.33265	0.66737	0.00023	345.012	23.173	507.39	0.055
0.33265	0.66737	0.00023	304.990	1.109	422.59	0.098
0.33265	0.66737	0.00023	309.994	3.483	431.35	0.091
0.33265	0.66737	0.00023	314.990	5.860	439.72	0.084
0.33265	0.66737	0.00023	320.000	8.241	447.73	0.078
0.33265	0.66737	0.00023	325.007	10.617	455.41	0.074
0.33265	0.66737	0.00023	329.996	12.978	462.75	0.070
0.33265	0.66737	0.00023	335.001	15.291	469.45	0.066
0.33265	0.66737	0.00023	340.007	17.608	475.99	0.063
0.33265	0.66737	0.00023	345.012	19.938	482.52	0.061
0.33265	0.66737	0.00023	309.994	1.305	403.55	0.108
0.33265	0.66737	0.00023	314.991	3.546	412.37	0.099
0.33265	0.66737	0.00023	320.000	5.801	420.82	0.092
0.33265	0.66737	0.00023	325.008	8.053	428.88	0.085
0.33265	0.66737	0.00023	329.997	10.294	436.56	0.080
0.33265	0.66737	0.00023	335.002	12.528	443.85	0.075
0.33265	0.66737	0.00023	340.006	14.762	450.93	0.071
0.33265	0.66737	0.00023	345.012	16.994	457.79	0.068
0.33265	0.66737	0.00023	314.988	1.411	383.28	0.121
0.33265	0.66737	0.00023	319.999	3.535	392.36	0.110
0.33265	0.66737	0.00023	325.006	5.662	400.95	0.101
0.33265	0.66737	0.00023	329.998	7.782	409.07	0.094
0.33265	0.66737	0.00023	335.001	9.886	416.62	0.087
0.33265	0.66737	0.00023	340.007	12.002	424.04	0.082
0.33265	0.66737	0.00023	345.013	14.117	431.21	0.077
0.33265	0.66737	0.00023	319.999	1.467	361.90	0.138
0.33265	0.66737	0.00023	325.005	3.458	371.11	0.125
0.33265	0.66737	0.00023	329.997	5.448	379.87	0.114
0.33265	0.66737	0.00023	335.004	7.431	387.97	0.105
0.33265	0.66737	0.00023	340.005	9.423	395.78	0.097
0.33265	0.66737	0.00023	345.012	11.417	403.31	0.090
0.33265	0.66737	0.00023	325.005	1.545	340.60	0.159
0.33265	0.66737	0.00023	329.996	3.405	350.07	0.143
0.33265	0.66737	0.00023	335.002	5.258	358.70	0.129
0.33265	0.66737	0.00023	340.007	7.124	367.01	0.118
0.33265	0.66737	0.00023	345.012	8.997	374.99	0.108
0.33265	0.66737	0.00023	329.997	1.695	320.21	0.184
0.33265	0.66737	0.00023	335.001	3.431	329.77	0.163
0.33265	0.66737	0.00023	340.006	5.178	338.76	0.146
0.33265	0.66737	0.00023	345.012	6.933	347.28	0.133
0.33265	0.66737	0.00023	335.000	1.674	295.57	0.224
0.33265	0.66737	0.00023	340.006	3.281	305.80	0.196
0.33265	0.66737	0.00023	345.013	4.898	315.09	0.173
0.33265	0.66737	0.00023	340.006	1.985	278.05	0.258
0.33265	0.66737	0.00023	345.012	3.488	288.00	0.224
0.33265	0.66737	0.00023	345.012	2.126	255.72	0.317
0.66803	0.33197	0.00023	230.003	0.053	779.72	0.041
0.66803	0.33197	0.00023	235.014	0.063	757.30	0.041
0.66803	0.33197	0.00023	239.996	0.074	734.91	0.041
0.66803	0.33197	0.00023	245.001	0.088	712.53	0.042
0.66803	0.33197	0.00023	250.004	0.107	690.31	0.044
0.66803	0.33197	0.00023	254.994	0.129	668.28	0.047
0.66803	0.33197	0.00023	259.987	0.152	646.36	0.048
0.66803	0.33197	0.00023	269.988	0.213	602.62	0.053
0.66803	0.33197	0.00023	274.996	0.253	580.89	0.057
0.66803	0.33197	0.00023	279.999	0.298	559.19	0.060
0.66803	0.33197	0.00023	285.001	0.347	537.52	0.065
0.66803	0.33197	0.00023	290.003	0.406	515.85	0.070
0.66803	0.33197	0.00023	235.009	0.447	759.58	0.044
0.66803	0.33197	0.00023	240.003	0.452	737.64	0.043
0.66803	0.33197	0.00023	240.003	0.455	737.19	0.042
0.66803	0.33197	0.00023	245.005	0.462	715.20	0.042
0.66803	0.33197	0.00023	250.002	0.465	693.13	0.044
0.66803	0.33197	0.00023	254.987	0.469	670.84	0.047
0.66803	0.33197	0.00023	259.986	0.475	648.96	0.048
0.66803	0.33197	0.00023	269.990	1.033	609.66	0.052
0.66803	0.33197	0.00023	274.995	4.491	616.43	0.050
0.66803	0.33197	0.00023	280.000	8.049	623.90	0.048
0.66803	0.33197	0.00023	285.001	11.526	630.69	0.047
0.66803	0.33197	0.00023	290.003	14.982	637.28	0.046
0.66803	0.33197	0.00023	294.998	18.419	643.73	0.044
0.66803	0.33197	0.00023	299.999	21.844	650.05	0.043
0.66803	0.33197	0.00023	304.997	25.231	656.12	0.042
0.66803	0.33197	0.00023	309.999	28.622	662.19	0.042
0.66803	0.33197	0.00023	314.995	31.989	668.12	0.041
0.66803	0.33197	0.00023	320.004	35.312	673.76	0.040
0.66803	0.33197	0.00023	320.005	35.204	673.17	0.040
0.66803	0.33197	0.00023	325.009	38.483	678.61	0.040
0.66803	0.33197	0.00023	330.000	41.708	683.81	0.039
0.66803	0.33197	0.00023	335.002	44.866	688.64	0.039
0.66803	0.33197	0.00023	340.007	48.022	693.49	0.038
0.66803	0.33197	0.00023	274.992	1.213	589.52	0.055
0.66803	0.33197	0.00023	279.997	4.543	596.58	0.053
0.66803	0.33197	0.00023	284.999	7.874	603.58	0.051
0.66803	0.33197	0.00023	290.001	11.198	610.44	0.049
0.66803	0.33197	0.00023	294.995	14.510	617.16	0.048
0.66803	0.33197	0.00023	299.999	17.813	623.75	0.046
0.66803	0.33197	0.00023	304.996	21.164	630.60	0.045
0.66803	0.33197	0.00023	309.999	24.461	637.03	0.044
0.66803	0.33197	0.00023	314.994	27.724	643.24	0.043
0.66803	0.33197	0.00023	320.002	30.973	649.28	0.042
0.66803	0.33197	0.00023	325.009	34.192	655.13	0.041
0.66803	0.33197	0.00023	330.000	37.386	660.86	0.041
0.66803	0.33197	0.00023	335.003	40.524	666.24	0.040
0.66803	0.33197	0.00023	340.008	43.670	671.65	0.039
0.66803	0.33197	0.00023	345.013	46.803	677.00	0.039
0.66803	0.33197	0.00023	279.994	1.084	566.73	0.059
0.66803	0.33197	0.00023	284.996	4.255	573.96	0.056
0.66803	0.33197	0.00023	289.999	7.438	581.18	0.054
0.66803	0.33197	0.00023	294.993	10.579	587.99	0.052
0.66803	0.33197	0.00023	299.995	13.705	594.56	0.050
0.66803	0.33197	0.00023	304.995	16.862	601.31	0.048
0.66803	0.33197	0.00023	309.998	20.016	607.96	0.047
0.66803	0.33197	0.00023	314.992	23.151	614.44	0.046
0.66803	0.33197	0.00023	320.003	26.278	620.77	0.045
0.66803	0.33197	0.00023	325.008	29.384	626.92	0.044
0.66803	0.33197	0.00023	329.999	32.463	632.91	0.043
0.66803	0.33197	0.00023	335.003	35.506	638.62	0.042
0.66803	0.33197	0.00023	340.006	38.543	644.27	0.041
0.66803	0.33197	0.00023	345.012	41.571	649.86	0.040
0.66803	0.33197	0.00023	284.994	1.314	547.20	0.062
0.66803	0.33197	0.00023	289.997	4.365	554.74	0.059
0.66803	0.33197	0.00023	294.993	7.420	562.17	0.056
0.66803	0.33197	0.00023	299.995	10.466	569.36	0.054
0.66803	0.33197	0.00023	304.994	13.507	576.39	0.052
0.66803	0.33197	0.00023	309.998	16.549	583.31	0.050
0.66803	0.33197	0.00023	314.991	19.574	590.05	0.049
0.66803	0.33197	0.00023	320.003	22.645	596.98	0.047
0.66803	0.33197	0.00023	325.008	25.638	603.29	0.046
0.66803	0.33197	0.00023	329.999	28.613	609.46	0.045
0.66803	0.33197	0.00023	335.003	31.531	615.19	0.044
0.66803	0.33197	0.00023	340.007	34.458	620.96	0.043
0.66803	0.33197	0.00023	345.012	37.380	626.67	0.042
0.66803	0.33197	0.00023	289.995	1.137	523.75	0.068
0.66803	0.33197	0.00023	294.992	3.997	531.14	0.064
0.66803	0.33197	0.00023	299.994	6.895	538.71	0.061
0.66803	0.33197	0.00023	304.993	9.787	546.05	0.058
0.66803	0.33197	0.00023	309.995	12.667	553.14	0.056
0.66803	0.33197	0.00023	314.992	15.528	559.98	0.054
0.66803	0.33197	0.00023	320.001	18.364	566.48	0.052
0.66803	0.33197	0.00023	325.007	21.179	572.77	0.050
0.66803	0.33197	0.00023	329.999	23.976	578.90	0.049
0.66803	0.33197	0.00023	335.002	26.756	584.82	0.047
0.66803	0.33197	0.00023	340.007	29.549	590.79	0.046
0.66803	0.33197	0.00023	345.012	32.341	596.71	0.045
0.66803	0.33197	0.00023	294.991	1.279	503.42	0.073
0.66803	0.33197	0.00023	299.993	4.055	511.48	0.068
0.66803	0.33197	0.00023	304.993	6.835	519.32	0.065
0.66803	0.33197	0.00023	309.995	9.617	526.94	0.061
0.66803	0.33197	0.00023	314.989	12.347	533.99	0.059
0.66803	0.33197	0.00023	320.002	15.098	540.97	0.056
0.66803	0.33197	0.00023	325.007	17.854	547.90	0.054
0.66803	0.33197	0.00023	329.998	20.587	554.59	0.052
0.66803	0.33197	0.00023	335.002	23.303	561.00	0.051
0.66803	0.33197	0.00023	340.007	26.013	567.28	0.049
0.66803	0.33197	0.00023	345.012	28.714	573.45	0.048
0.66803	0.33197	0.00023	299.992	1.292	481.62	0.079
0.66803	0.33197	0.00023	304.992	3.994	490.59	0.074
0.66803	0.33197	0.00023	309.995	6.699	499.19	0.069
0.66803	0.33197	0.00023	314.991	9.396	507.42	0.066
0.66803	0.33197	0.00023	320.002	12.108	515.43	0.062
0.66803	0.33197	0.00023	325.006	14.789	523.00	0.059
0.66803	0.33197	0.00023	329.998	17.455	530.26	0.057
0.66803	0.33197	0.00023	335.002	20.098	537.17	0.055
0.66803	0.33197	0.00023	340.008	22.742	543.94	0.053
0.66803	0.33197	0.00023	345.012	25.378	550.54	0.051
0.66803	0.33197	0.00023	304.991	1.176	458.03	0.088
0.66803	0.33197	0.00023	309.995	3.732	467.27	0.081
0.66803	0.33197	0.00023	314.989	6.283	476.05	0.076
0.66803	0.33197	0.00023	320.000	8.832	484.35	0.071
0.66803	0.33197	0.00023	325.006	11.370	492.28	0.068
0.66803	0.33197	0.00023	329.998	13.920	500.10	0.064
0.66803	0.33197	0.00023	335.003	16.403	507.12	0.061
0.66803	0.33197	0.00023	340.008	18.918	514.18	0.059
0.66803	0.33197	0.00023	345.013	21.422	521.04	0.056
0.66803	0.33197	0.00023	309.993	1.287	437.02	0.097
0.66803	0.33197	0.00023	314.990	3.694	446.31	0.089
0.66803	0.33197	0.00023	320.001	6.108	455.14	0.083
0.66803	0.33197	0.00023	325.006	8.485	463.18	0.078
0.66803	0.33197	0.00023	329.998	10.848	470.83	0.073
0.66803	0.33197	0.00023	335.001	13.187	478.01	0.070
0.66803	0.33197	0.00023	340.006	15.524	484.95	0.066
0.66803	0.33197	0.00023	345.012	17.878	491.88	0.063
0.66803	0.33197	0.00023	314.988	1.421	416.15	0.108
0.66803	0.33197	0.00023	319.999	3.707	425.71	0.099
0.66803	0.33197	0.00023	325.004	5.990	434.69	0.092
0.66803	0.33197	0.00023	329.997	8.262	443.16	0.085
0.66803	0.33197	0.00023	335.002	10.522	451.08	0.080
0.66803	0.33197	0.00023	340.008	12.787	458.77	0.075
0.66803	0.33197	0.00023	345.012	15.055	466.24	0.071
0.66803	0.33197	0.00023	319.999	1.571	395.33	0.121
0.66803	0.33197	0.00023	325.006	3.713	404.91	0.110
0.66803	0.33197	0.00023	329.997	5.840	413.74	0.101
0.66803	0.33197	0.00023	335.001	7.947	421.83	0.094
0.66803	0.33197	0.00023	340.007	10.060	429.66	0.088
0.66803	0.33197	0.00023	345.013	12.157	437.02	0.083
0.66803	0.33197	0.00023	325.004	1.528	371.16	0.139
0.66803	0.33197	0.00023	329.996	3.533	381.13	0.126
0.66803	0.33197	0.00023	335.002	5.533	390.25	0.115
0.66803	0.33197	0.00023	340.007	7.545	399.01	0.106
0.66803	0.33197	0.00023	345.013	9.561	407.38	0.098
0.66803	0.33197	0.00023	329.997	1.761	351.24	0.158
0.66803	0.33197	0.00023	335.001	3.610	360.73	0.143
0.66803	0.33197	0.00023	340.007	5.462	369.61	0.130
0.66803	0.33197	0.00023	345.012	7.292	377.62	0.120
0.66803	0.33197	0.00023	335.000	1.723	325.61	0.191
0.66803	0.33197	0.00023	340.006	3.470	336.18	0.169
0.66803	0.33197	0.00023	345.012	5.221	345.86	0.151
0.66803	0.33197	0.00023	340.005	2.029	306.65	0.220
0.66803	0.33197	0.00023	345.012	3.661	317.29	0.193
0.66803	0.33197	0.00023	345.013	1.861	275.26	0.292

Compositions listed ($x_1$, $x_2$) and composition standard uncertainty $\left(u_{\text{c}}\left(x_1\right)\right)$ are mole fractions. The standard uncertainties for temperature $\left(T\right)$ and pressure $\left(p\right)$ are $u_{\text{c}}\left(T\right)$ = 0.004 and $u_{\text{c}}\left(p\right)$ = 0.014 MPa, respectively. Speed of sound values listed $\left(w\right)$ are averaged from up to twelve measurements at each state point. Relative combined expanded speed of sound uncertainties, $U_{\text{c}}\left(w\right)$, are determined with a coverage factor k = 2, and include effects of composition, temperature, pressure, time delay between echo arrivals, and path length calibration as described in detail elsewhere [3, 4, 14]. Lines in the table separate the pseudoisochores