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	0.1%/5%	-	Gas densities are calculated to better than 0.1% over the temperature and pressure ranges of the reference.				-	0.5%/ -
Reference	[2]/[1]	-	[1]	[1]	[1]	[1]	[1]	[3]/ [1]
200	5.15	-	-200.3	401.9	4067	23719	10.50	11.70
210	5.29	-	-181.6	367.7	5011	15370	11.29	12.28
220	5.42	-	-165.2	338.5	5581	9444	12.10	12.84
230	5.56	-	-150.7	313.2	5902	5206	12.92	13.40
240	5.69	-	-137.8	291.2	6056	2163	13.76	13.95
250	5.82	-	-126.3	271.9	6097	-26	14.62	14.49
260	5.95	-	-116.0	254.7	6064	-1596	15.48	15.02
270	6.08	-	-106.7	239.5	5982	-2714	16.36	15.56
280	6.21	-	-98.2	225.9	5868	-3500	17.24	16.08
290	6.33	-	-90.5	213.6	5735	-4040	18.12	16.60
300	6.45	-	-83.5	202.6	5592	-4398	19.02	17.11
310	6.57	-	-77.0	192.5	5443	-4619	19.91	17.62
320	6.69	-	-71.0	183.4	5295	-4739	20.80	18.12
330	6.80	-	-65.5	175.0	5148	-4784	21.70	18.62
340	6.91	-	-60.4	167.4	5005	-4773	22.59	19.11
350	7.02	-	-55.7	160.3	4868	-4720	23.48	19.59
360	7.12	-	-51.2	153.8	4736	-4637	24.37	20.07
370	7.22	-	-47.1	147.8	4610	-4532	25.25	20.60
380	7.31	-	-43.2	142.2	4491	-4412	26.13	22.22
390	7.40	-	-39.6	137.0	4378	-4282	27.00	22.70
400	7.49	-	-36.2	132.1	4271	-4145	27.87	23.18
410	7.56	-	-33.0	127.6	4170	-4005	28.73	23.65
420	7.64	-	-30.0	123.3	4076	-3863	29.59	24.11
430	7.674	-	-27.1	119.4	3986	-3722	30.44	24.57
440	7.746	-	-24.4	115.6	3902	-3582	31.28	25.03
450	7.815	-	-21.9	112.1	3823	-3444	32.12	25.48
460	7.882	-	-19.4	108.8	3749	-3310	32.95	25.93
470	7.946	-	-17.1	105.6	3679	-3179	33.77	26.37
480	8.008	-	-15.0	102.7	3614	-3052	34.59	26.81
490	8.068	-	-12.9	99.9	3552	-2929	35.41	27.25
500	8.126	-	-10.9	97.2	3494	-2810	36.21	27.68
550	8.396	-	-2.2	85.7	3252	-2281	40.20	29.77
600	8.650	-	4.9	76.6	3073	-1849	44.17	31.79
650	8.917	-	10.7	69.2	2939	-1500	48.25	33.73
700	9.224	-	15.6	63.1	2839	-1217	52.61	35.59
750	9.601	-	19.8	57.9	2763	-986	57.46	37.40
800	-	-	23.4	53.6	2705	-798	-	-
850	-	-	26.5	49.8	2662	-642	-	-
900	-	-	29.3	46.5	2629	-513	-	-
950	-	-	31.7	43.6	2604	-406	-	-
1000	-	-	33.9	41.1	2586	-316	-	-

References:

1. 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.
2. J. J. Hurly, Int. J. Thermophys 23:667 (2002).
3. 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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