T K		Vapor Pressure kPa	B(T) cm3·mol-1	dB/dT · T cm3·mol-1	C(T) cm6·mol-2	dC/dT · T cm6·mol-2	mW/(m·K)	µPa·s
Estimated Uncertainty	1%/0.1%	-	Gas densities are calculated to better than 0.1% over the temperature and pressure ranges of the reference.				-	0.1%/-
Reference	[4]	[5]	[4]	[4]	[4]	[4]	[5]	[6] / [5]
200	4.04	374.99	-311.9	678.0	-47794	475438	10.9	9.98
210	4.10	573.1	-280.7	603.9	-28691	317801	14.6	10.47
220	4.17	840.95	-254.0	542.4	-16447	214933	15.1	10.95
230	4.23	1192	-231.1	490.7	-8505	146401	15.6	11.43
240	4.30	1640.2	-211.2	446.9	-3318	99939	16.2	11.92
250	4.36	2200.2	-193.7	409.4	73	67976	16.7	12.40
260	4.42	2887.4	-178.3	377.0	2280	45721	17.2	12.88
270	4.48	3718.6	-164.6	348.8	3695	30079	17.7	13.36
280	4.54	4713.4	-152.4	324.0	4577	19007	18.2	13.84
290	4.59	5897.3	-141.4	302.2	5099	11136	18.7	14.32
300	4.65	-	-131.5	282.8	5377	5529	18.6	14.80
310	4.70	-	-122.5	265.5	5490	1543	19.4	15.28
320	4.76	-	-114.3	250.0	5491	-1275	20.2	15.76
330	4.81	-	-106.9	236.1	5420	-3246	21.0	16.24
340	4.86	-	-100.0	223.5	5302	-4599	21.8	16.71
350	4.91	-	-93.7	212.0	5155	-5499	22.6	17.19
360	4.95	-	-87.9	201.6	4991	-6068	23.4	17.67
370	5.00	-	-82.5	192.0	4820	-6392	24.2	18.14
380	5.04	-	-77.5	183.3	4647	-6538	25.0	18.58
390	5.09	-	-72.8	175.2	4477	-6554	25.8	19.02
400	5.13	-	-68.5	167.8	4312	-6476	26.6	19.45
410	5.17	-	-64.4	160.9	4154	-6330	27.3	19.88
420	5.21	-	-60.6	154.5	4003	-6137	28.1	20.30
430	5.25	-	-57.0	148.6	3861	-5913	28.9	20.72
440	5.29	-	-53.7	143.1	3728	-5667	29.7	21.14
450	5.33	-	-50.5	137.9	3604	-5410	30.5	21.55
460	5.37	-	-47.6	133.1	3488	-5147	31.3	21.96
470	5.41	-	-44.7	128.6	3380	-4882	32.1	22.36
480	5.44	-	-42.1	124.4	3280	-4620
490	5.48	-	-39.6	120.4	3187	-4362
500	5.51	-	-37.2	116.6	3102	-4112
550	5.68	-	-26.8	100.7	2764	-2987
600	5.82	-	-18.6	88.5	2545	-2091
650	5.96	-	-11.9	78.8	2406	-1397
700	6.08	-	-6.4	70.9	2323	-863
750	6.19	-	-1.7	64.5	2278	-452
800	6.29	-	2.3	59.0	2259	-134
850	6.38	-	5.7	54.4	2259	112
900	6.46	-	8.7	50.5	2271	304
950	6.54	-	11.3	47.0	2291	454
1000	6.61	-	13.7	44.0	2318	571

References:

1. IUPAC; "Atomic Weights of the Elements 1999", J Phys Chem Ref Data 30:701 (2001).
2. E. F. Westrum, D. R. Stull, and G. C. Sinke, The Chemical Thermodynamics of Organic Compounds (John Wiley and Sons, New York, 1969).
3. J. F. Mathews, J.F, Chem. Rev. 72:71 (1972).
4. J. J. Hurly, Thermodynamic Properties of Nitrous Oxide and Nitric Oxide from Speed of Sound Measurements, Submitted to Int. J. Thermophys. Aug. 2003.
5. Lemmon, E.W. and M.O. McLinden, NIST Standard Reference Database 23: NIST Reference Fluid Thermodynamic and Transport Properties, Version 7.0 Beta, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2001; information available at http://www.nist.gov/srd/nist23.htm.
6. J. J. Hurly, The Viscosity and Speed of Sound in Gaseous Nitrous Oxide and Nitrogen Trifluoride Measured iwth a Greenspan Viscometer, Submitted to Int. J. Thermophys. Aug. 2003.

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