Table 1. Relative Volatility Values

Table 1. Relative Volatility Values (a_K)
	surr^a	bp^b,4(°C)	conc^c (ppb)	K^d	a_K-value
Compound	surr^a	bp^b,4(°C)	conc^c (ppb)	K^d	avg^e	dev^f
volatile gases
dichlorodifluoromethane		-30	80		0.07	0.02
trichlorofluoromethane		24	80		0.20	0.02
vinyl chloride		-13	80		0.48	0.06
chloroethane		12	80		1.01	0.02
chloromethane		-24	80		1.37	0.07
bromomethane		4	80		1.82	0.12
volatiles
1,1-dichloroethene		37	40		0.63	0.07
carbon tetrachloride		76	40		0.64	0.02
hexafluorobenzene	a	82	25		0.86	0.06
1,1-dichloropropene		104	40		0.88	0.03
1,1,1-trichloroethane		74	40	1.41⁵	1.31	0.04
allyl chloride		45	100		1.34	0.45
2,2-dichloropropane		69	40		1.37	0.18
tetrachloroethene		121	40	1.55⁵	1.43	0.03
pentafluorobenzene	a	85	9		1.51	0.04
iodomethane		42	100		2.29	0.43
trans-1,2-dichloroethene		48	40		2.3	0.46
trichloroethene		87	40		2.34	0.09
isopropylbenzene		152	40	2.20⁵	2.75	0.05
fluorobenzene	a	85	9		3.5	0.21
benzene		80	40	4.36⁵	3.55	0.27
ethylbenzene		136	40	3.28⁵	3.6	0.12
1,4-difluorobenzene	a	88	9		3.83	0.07
toluene		111	40	3.93⁵	3.88	0.12
m,p-xylenes		138	40		3.91	0.11
benzene-d₆	c	79	26	4.4	3.92	0.27
1,1-dichloroethane		57	40		4.12	0.08
toluene-d₈	b	111	25		4.28	0.09
n-propylbenzene		159	40	2.49⁵	2.43	0.04
cis-1,2-dichloroethene		60	40		5.34	0.07
o-xylene		144	40	5.11⁵	5.54	0.09
o-xylene-d₁₀	a	143	25	5.1	6.14	0.2
chlorobenzene-d₅	a + b	131	25		6.27	0.17
chloroform		62	40	5.85⁵	6.39	0.09
styrene		145	40		6.87	0.36
chlorobenzene		132	40		6.07	0.24
bromobenzene		156	40		7.89	0.73
bromobenzene-d₅	b	155	25		7.93	0.59
4-bromo-1-fluorobenzene	c	152	25		8.05	0.7
methylene chloride		40	40	9.33⁵	10.1	1.6
methylene chloride-d₂	c	40	24		11.1	1.9
1,2-dichloropropane		96	40		10.9	0.2
1,2-dichloropropane-d₆	c	95	21		11	0.1
1,1,1,2-tetrachloroethane		130	40		11.6	0.6
bromodichloromethane		90	40		12.3	0.6
trans-1,3-dichloropropene		112	40		14.1	0.7
bromochloromethane		68	40		15.4	0.4
1,2-dichloroethane		84	40	20.23⁵	18.7	0.9
dibromochloromethane		120	40		19.2	1.4
cis-1,3-dichloropropene		104	40		19.6	1.4
1,2-dichloroethane-d₄	a	84	25	20.	20.
bromoform		150	40		23.4	2.4
dibromomethane		97	40		23.9	1.7
1,3-dichloropropane		120	40		24.9	1.9
1,2-dibromoethane-d₄	a	131	26		26.	1.7
1,1,2-trichloroethane		114	40		26.2	2.4
1,1,2-trichloroethane-d₃	c	112	20		26.6	0.7
1,2-dibromoethane		132	40		26.7	2.
1,1,2,2-tetrachloroethane		146	40		30.3	2.8
cis-1,4-dichloro-2-butene		152	100		33.3	8.1
1,2,3-trichloropropane		157	40		33.6	2.9
trans-1,4-dichloro-2-butene		156	100		33.8	7.4
neutral semivolatiles
n-butylbenzene		183	40	1.65⁵	1.88	0.08
sec-butylbenzene		173	40		1.91	0.04
hexachlorobutadiene		215	40		2.08	0.06
p-isopropyltoluene		183	40	2.25⁵	2.5	0.07
tert-butylbenzene		169	40		2.72	0.05
decafluorobiphenyl	b	206	25		3.03	0.06
1,3,5-trimethylbenzene		165	40	3.52⁵	3.75	0.18
2-chlorotoluene		159	40		4.04	0.17
1,2,4-trimethylbenzene		169	40		4.5	0.4
4-chlorotoluene		162	40		4.78	0.43
1,3-dichlorobenzene		173	40		5.72	0.73
1,4-dichlorobenzene		174	40		6.14	0.84
1,2,4-trichlorobenzene		214	40		7.73	1.22
1,2-dichlorobenzene		180	40		7.86	1.19
1,2,4-trichlorobenzene-d₃	b	213	25		7.88	1.19
1,2-dichlorobenzene-d₄	b	181	24		8.03	1.23
1,2,3-trichlorobenzene		218	40		11.3	1.6
pentachloroethane		162	100		13.2	3.3
naphthalene		218	40		16.7	2.2
naphthalene-d₈	c	217	25		18	3.7
1,2-dibromo-3-chloro-propane		196	40		38.9	4.9
soluble volatiles
diethyl ether		35	80		34.9	5.7
ethyl methacrylate		117	100		48.4	2.8
methyl methacrylate		101	100		71.4	4.1
methacrylonitrile		90	100		102.9	2.4
acrolein		53	200	180.⁶	116.8	1
4-methyl-2-pentanone		117	100		119.9	8.4
2-hexanone		128	100		131.1	2.1
ethyl acetate-2C¹³	a	77	250	150.⁶	150.
acrylonitrile		78	100		161.	32.
acetophenone-d₅	c	202	100		161.	20.
isobutanol		108	100		175.	156.
tetrahydrofuran		66	N/A		456.	67.
acetonitrile		82	100	1200.⁷	545.	103.
acetone		56	100	580.⁶	600.	32.
acetone-d₆	a	57	490	600.⁶	600.
2-butanone		80	100	380.⁶	770.	110.
propionitrile		97	100		1420.	320.
1,4-dioxane-d₈	a	101	240	5800.	5800.
1,4-dioxane		101	100	5750.⁶	6200.	700.
basic semivolatiles
N-nitrosodimethylamine		154	500		129	37.3
N-nitroso-methyl-ethylamine		165	500		1900.	800.
N-nitrosodi-n-propylamine		206	500		2400.	2000.
N-nitrosodiethylamine		177	500		4900.	2200.
aniline		184	500		13700.	2300.
o-toluidine		200	500		15200.	2100.
marginal analytes
1-methylnaphthalene-d₁₀	b	241	100		67.
2-methylnaphthalene		245	500		67.	17.
2-picoline		129	100		6800.	5200.
pyridine		116	100		13100.	600.
pyridine-d₅	a	115	100	15000.	15000.
N-nitrosodibutylamine		240	500		21000.	5000.

^aSurrogate type; a = a-surrogate, b = b-surrogate, and c = check surrogate.
^bBoiling point of analyte.
^cConcentration of analyte is solutions used to determine a-values.
^dPartition coefficient of analyte between headspace and water at 20 (°C).
^eThree to four replicates.
^fOne sigma standard deviation.

National Exposure Research Laboratory
Author: Mike Hiatt
Email: Hiatt.Mike@epa.gov or Pia.Stephen@epa.gov
Send questions or comments to the Information Desk
ESD Info Desk (contractor operated)
(Library-lv@epa.gov)

Table 1. Relative Volatility Values

Local Navigation