The azeotropic point in function of temperature or pressure

On this page you can study on graphs the behaviour of an azeotropic point of organic mixtures in function of temperature, in pressures between 0.1 and 10 bar. The azeotropic information (boiling point/temperature, composition) is predicted, using vapor-liquid-equilibrium calculations using the UNIFAC (modified, Dortmund version) activity model.

Find more information about azeotropes at Wikipedia

Find more information about the method of prediction in the About section.

Select compounds

Name	CAS-nr.	Formula	Family
acetone	67-64-1	C₃H₆O	ketone
methanol	67-56-1	CH₄O	alcohol
dichloromethane	75-09-2	CH₂Cl₂	halocarbon
tetrahydrofuran	109-99-9	C₄H₈O	ether
water	7732-18-5	H₂O	water
ethanol	64-17-5	C₂H₆O	alcohol
ethyl acetate	141-78-6	C₄H₈O₂	ester
toluene	108-88-3	C₇H₈	aromatic
acetic acid	64-19-7	C₂H₄O₂	carboxylic acid
isopropanol	67-63-0	C₃H₈O	alcohol
chloroform	67-66-3	CHCl₃	halocarbon
acetonitrile	75-05-8	C₂H₃N	nitrile
1-butanol	71-36-3	C₄H₁₀O	alcohol
n-hexane	110-54-3	C₆H₁₄	hydrocarbon
methyl acetate	79-20-9	C₃H₆O₂	ester
cyclohexane	110-82-7	C₆H₁₂	hydrocarbon
n-pentane	109-66-0	C₅H₁₂	hydrocarbon
n-heptane	142-82-5	C₇H₁₆	hydrocarbon
acetaldehyde	75-07-0	C₂H₄O	aldehyde
n-octane	111-65-9	C₈H₁₈	hydrocarbon
n-nonane	111-84-2	C₉H₂₀	hydrocarbon
n-decane	124-18-5	C₁₀H₂₂	hydrocarbon
n-undecane	1120-21-4	C₁₁H₂₄	hydrocarbon
n-dodecane	112-40-3	C₁₂H₂₆	hydrocarbon
i-pentane	78-78-4	C₅H₁₂	hydrocarbon
neo-pentane	463-82-1	C₅H₁₂	hydrocarbon
i-hexane	107-83-5	C₆H₁₄	hydrocarbon
2,3-dimethyl-butane	79-29-8	C₆H₁₄	hydrocarbon
2,2-dimethyl-butane	75-83-2	C₆H₁₄	hydrocarbon
2,2,3-trimethyl-butane	464-06-2	C₇H₁₆	hydrocarbon
2,2,3-trimethyl-pentane	564-02-3	C₈H₁₈	hydrocarbon
2,3,4-trimethyl-pentane	565-75-3	C₈H₁₈	hydrocarbon
cyclopentane	287-92-3	C₅H₁₀	hydrocarbon
cycloheptane	291-64-5	C₇H₁₄	hydrocarbon
cyclooctane	292-64-8	C₈H₁₆	hydrocarbon
methyl-cyclopentane	96-37-7	C₆H₁₂	hydrocarbon
ethyl-cyclopentane	1640-89-7	C₇H₁₄	hydrocarbon
methyl-cyclohexane	108-87-2	C₇H₁₄	hydrocarbon
ethyl-cyclohexane	1678-91-7	C₈H₁₆	hydrocarbon
octadecane	593-45-3	C₁₈H₃₈	hydrocarbon
isopropyl-cyclohexane	696-29-7	C₉H₁₈	hydrocarbon
2-methyl-hexane	591-76-4	C₇H₁₆	hydrocarbon
3-methyl-hexane	589-34-4	C₇H₁₆	hydrocarbon
1-pentene	109-67-1	C₅H₁₀	hydrocarbon
2-pentene (cis)	627-20-3	C₅H₁₀	hydrocarbon
2-pentene (trans)	646-04-8	C₅H₁₀	hydrocarbon
1-hexene	592-41-6	C₆H₁₂	hydrocarbon
1-heptene	592-76-7	C₇H₁₄	hydrocarbon
1-oktene	111-66-0	C₈H₁₆	hydrocarbon
1-nonene	124-11-8	C₉H₁₈	hydrocarbon
1-decene	872-05-9	C₁₀H₂₀	hydrocarbon
1-undecene	821-95-4	C₁₁H₂₂	hydrocarbon
1-dodecene	112-41-4	C₁₂H₂₄	hydrocarbon
2-methyl-1-butene	563-46-2	C₅H₁₀	hydrocarbon
3-methyl-1-butene	563-45-1	C₅H₁₀	hydrocarbon
isobutylene	115-11-7	C₄H₈	hydrocarbon
butadiene	106-99-0	C₄H₆	hydrocarbon
hexadiene	592-48-3	C₆H₁₀	hydrocarbon
isoprene	78-79-5	C₅H₈	hydrocarbon
benzene	71-43-2	C₆H₆	aromatic
ethyl benzene	100-41-4	C₈H₁₀	aromatic
cumene	98-82-8	C₉H₁₂	aromatic
n-butyl-benzene	104-51-8	C₁₀H₁₄	aromatic
iso-butyl-benzene	538-93-2	C₁₀H₁₄	aromatic
tert-butyl-benzene	98-06-6	C₁₀H₁₄	aromatic
o-xylene	95-47-6	C₈H₁₀	aromatic
m-xylene	108-38-3	C₈H₁₀	aromatic
p-xylene	106-42-3	C₈H₁₀	aromatic
n-propyl benzene	103-65-1	C₉H₁₂	aromatic
o-methyl ethyl benzene	611-14-3	C₉H₁₂	aromatic
m-methyl ethyl benzene	620-14-4	C₉H₁₂	aromatic
p-methyl ethyl benzene	622-96-8	C₉H₁₂	aromatic
naphthalene	91-20-3	C₁₀H₈	aromatic
alpha-methyl naphthalene	90-12-0	C₁₁H₁₀	aromatic
beta-methyl naphthalene	91-57-6	C₁₁H₁₀	aromatic
alpha-ethyl naphthalene	1127-76-0	C₁₂H₁₂	aromatic
beta-ethyl naphthalene	939-27-5	C₁₂H₁₂	aromatic
styrene	100-42-5	C₈H₈	aromatic
anthracene	120-12-7	C₁₄H₁₀	aromatic
phenanthrene	85-01-8	C₁₄H₁₀	aromatic
diphenyl	92-52-4	C₁₂H₁₀	aromatic
1,2,3-trimethyl benzene	526-73-8	C₉H₁₂	aromatic
1,2,4-trimethyl benzene	95-63-6	C₉H₁₂	aromatic
diphenyl methane	101-81-5	C₁₃H₁₂	aromatic
sec-butyl benzene	135-98-8	C₁₀H₁₄	aromatic
o-diethyl benzene	135-01-3	C₁₀H₁₄	aromatic
m-diethyl benzene	141-93-5	C₁₀H₁₄	aromatic
p-diethyl benzene	105-05-5	C₁₀H₁₄	aromatic
tetraline	119-64-2	C₁₀H₁₂	aromatic
n-propanol	71-23-8	C₃H₈O	alcohol
sec-butanol	78-92-2	C₄H₁₀O	alcohol
iso-butanol	78-83-1	C₄H₁₀O	alcohol
tert-butanol	75-65-0	C₄H₁₀O	alcohol
n-pentanol	71-41-0	C₅H₁₂O	alcohol
n-hexanol	111-27-3	C₆H₁₄O	alcohol
n-heptanol	111-70-6	C₇H₁₆O	hydrocarbon
n-octanol	111-87-5	C₈H₁₈O	hydrocarbon
n-nonanol	143-08-8	C₉H₂₀O	hydrocarbon
n-decanol	112-30-1	C₁₀H₂₂O	hydrocarbon
n-dodecanol	112-53-8	C₁₂H₂₆O	hydrocarbon
n-octadecanol	112-92-5	C₁₈H₃₈O	hydrocarbon
ethylene glycol	107-21-1	C₂H₆O₂	alcohol
propylene glycol	57-55-6	C₃H₈O₂	alcohol
glycerol	56-81-5	C₃H₈O₃	alcohol
cyclohexanol	108-93-0	C₆H₁₂O	alcohol
allyl alcohol	107-18-6	C₃H₆O	alcohol
n-propyl acetate	109-60-4	C₅H₁₀O₂	ester
iso-propyl acetate	108-21-4	C₅H₁₀O₂	ester
n-butyl acetate	123-86-4	C₆H₁₂O₂	ester
sec-butyl acetate	105-46-4	C₆H₁₂O₂	ester
iso-butyl acetate	110-19-0	C₆H₁₂O₂	ester
tert-butyl acetate	540-88-5	C₆H₁₂O₂	ester
methyl propionate	554-12-1	C₄H₈O₂	ester
ethyl propionate	105-37-3	C₅H₁₀O₂	ester
propyl propionate	106-36-5	C₆H₁₂O₂	ester
methyl butirate	623-42-7	C₅H₁₀O₂	ester
ethyl n-butirate	105-54-4	C₆H₁₂O₂	ester
propyl butirate	105-66-8	C₇H₁₄O₂	ester
vinyl acetate	108-05-4	C₄H₆O₂	ester
methyl-ethyl ketone	78-93-3	C₄H₈O	ketone
methyl-n-propyl ketone	107-87-9	C₅H₁₀O	ketone
methyl-iso-propyl ketone	563-80-4	C₅H₁₀O	ketone
diethyl ketone	96-22-0	C₅H₁₀O	ketone
methyl-n-butyl ketone	591-78-6	C₆H₁₂O	ketone
methyl-iso-butyl ketone	108-10-1	C₆H₁₂O	ketone
cyclopentanone	120-92-3	C₅H₈O	ketone
cyclohexanone	108-94-1	C₆H₁₀O	ketone
cycloheptanone	502-42-1	C₇H₁₂O	ketone
methyl-phenyl ketone	98-86-2	C₈H₈O	ketone, aromatic
dimethyl ether	115-10-6	C₂H₆O	ether
methyl-ethyl ether	540-67-0	C₃H₈O	ether
diethyl ether	60-29-7	C₄H₁₀O	ether
ethyl-n-propyl ether	628-32-0	C₅H₁₂O	ether
di-n-propyl ether	111-43-3	C₆H₁₄O	ether
di-isopropyl ether	108-20-3	C₆H₁₄O	ether
di-n-butyl ether	142-96-1	C₈H₁₆O	ether
tetrahydro pyran	142-68-7	C₅H₁₀O	ether
1,4-dioxane	123-91-1	C₄H₈O₂	ether
1,3-dioxane	505-22-6	C₄H₈O₂	ether
trioxane	110-88-3	C₃H₆O₃	ether
ethylene glycol dimethyl ether	110-71-4	C₄H₁₀O₂	ether
ethylene glycol diethyl ether	629-14-1	C₆H₁₄O₂	ether
1,3-dioxolane	646-06-0	C₃H₆O₂	ether
methyl-tert-butyl ether	1634-04-4	C₅H₁₃O	ether
diphenyl ether	101-84-8	C₁₂H₁₀O	aromatic, ether
anisole	100-66-3	C₇H₈O	ether, aromatic
phenetole	103-73-1	C₈H₁₀O	ether, aromatic
veratrol	91-16-7	C₈H₁₁O₂	ether, aromatic
methyl vinyl ether	107-25-5	C₃H₆O	ether
formaldehyde	50-00-0	CH₂O	aldehyde
n-propanal	123-38-6	C₃H₆O	aldehyde
n-butanal	123-72-8	C₄H₈O	aldehyde
i-butanal	78-84-2	C₄H₈O	aldehyde
n-pentanal	110-62-3	C₅H₁₀O	aldehyde
n-hexanal	66-25-1	C₆H₁₂O	aldehyde
glyceraldehyde	367-47-5	C₃H₆O₃	alcohol, aldehyde
benzaldehyde	100-52-7	C₇H₆O	aromatic, aldehyde
glycolic aldehyde	141-46-8	C₂H₄O₂	alcohol, aldehyde
succinic aldehyde	638-37-9	C₄H₆O₂	aldehyde
acetyl acetone	123-54-6	C₅H₈O₂	ketone
acrolein	107-02-8	C₃H₄O	aldehyde
methyl glyoxal	78-98-8	C₃H₄O₂	ketone, aldehyde
biacetyl	431-03-8	C₄H₆O₂	ketone
p-anisaldehyde	123-11-5	C₈H₈O₂	ether, aromatic
m-anisaldehyde	22924-15-8	C₈H₈O₂	ether, aromatic
n-propionitrile	107-12-0	C₃H₅N	nitrile
n-butironitrile	109-74-0	C₄H₇N	nitrile
ethyl chloride	75-00-3	C₂H₅Cl	halocarbon
1,1-dichloro ethane	75-34-3	C₂H₄Cl₂	halocarbon
1,2-dichloro ethane	107-06-2	C₂H₄Cl₂	halocarbon
1,1,2-trichloro ethane	79-00-5	C₂H₃Cl₃	halocarbon
vinyl chloride	75-01-4	C₂H₃Cl	halocarbon
1,1-dichloro ethylene	75-35-4	C₂H₂Cl₂	halocarbon
1,2-dichloro ethylene (cis)	156-59-2	C₂H₂Cl₂	halocarbon
1,2-dichloro ethylene (trans)	156-60-5	C₂H₂Cl₂	halocarbon
trichloro ethylene	79-01-6	C₂HCl₃	halocarbon
tetrachloro ethylene	127-18-4	C₂Cl₄	halocarbon
n-propyl chloride	540-54-5	C₃H₇Cl	halocarbon
isopropyl chloride	75-29-6	C₃H₇Cl	halocarbon
1,1-dichloro propane	78-99-9	C₃H₆Cl₂	halocarbon
1,2-dichloro propane	78-87-5	C₃H₆Cl₂	halocarbon
n-butyl chloride	109-69-3	C₄H₉Cl	halocarbon
sec-butyl chloride	78-86-4	C₄H₉Cl	halocarbon
iso-butyl chloride	513-36-0	C₄H₉Cl	halocarbon
tert-butyl chloride	507-20-0	C₄H₉Cl	halocarbon
n-pentyl chloride	543-59-9	C₅H₁₁Cl	halocarbon
n-hexyl chloride	544-10-5	C₆H₁₃Cl	halocarbon
benzyl chloride	100-44-7	C₇H₇Cl	aromatic, halocarbon
ethoxy ethanol	110-80-5	C₄H₁₀O₂	ether, alcohol
methoxyethanol	109-86-4	C₃H₈O₂	ether, alcohol
methoxypropanol	1320-67-8	C₄H₁₀O₂	ether, alcohol
diethylene glycol	111-46-6	C₄H₁₀O₃	alcohol, ether
triethylene glycol	112-27-6	C₆H₁₄O₄	alcohol, ether
di-1,2-propylene glycol (s,s)	110-98-5	C₆H₁₄O₃	alcohol, ether
di-1,2-propylene glycol (s,p)	106-62-7	C₆H₁₄O₃	alcohol, ether
butoxyethanol	111-76-2	C₆H₁₄O₂	ether, alcohol
tetraethylene glycol	112-60-7	C₈H₁₈O₄	alcohol, ether
iso-pentanol	123-51-3	C₅H₁₂O	alcohol
sec-pentanol	584-02-1	C₅H₁₂O	alcohol
phenylethanol	60-12-8	C₈H₁₀O	aromatic
1,4-butanediol	110-63-4	C₄H₁₀O₂	alcohol
1,5-pentanediol	111-29-5	C₅H₁₂O₂	alcohol
neopentyl glycol	126-30-7	C₅H₁₂O₂	alcohol
hexylene glycol	107-41-5	C₆H₁₄O₂	alcohol
tripropylene glycol	1638-16-0	C₉H₂₀O₄	alcohol, ether
diacetone alcohol	123-42-2	C₆H₁₂O₂	ketone, alcohol
propanoic acid	79-09-4	C₃H₆O₂	carboxylic acid
n-butanoic acid	107-92-6	C₄H₈O₂	carboxylic acid
iso-butanoic-acid	79-31-2	C₄H₈O₂	carboxylic acid
n-pentanoic acid	109-52-4	C₅H₁₀O₂	carboxylic acid
n-hexanoic acid	142-62-1	C₆H₁₂O₂	carboxylic acid
benzoic acid	65-85-0	C₇H₆O₂	aromatic, carboxylic acid
phenyl acetic acid	103-82-2	C₈H₈O₂	aromatic, carboxylic acid
n-decanoic-acid	334-48-5	C₁₀H₂₀O₂	hydrocarbon
stearic acid	57-11-4	C₁₈H₃₆O₂	hydrocarbon
palmitic acid	57-10-3	C₁₆H₃₂O₂	hydrocarbon
oleic acid	112-80-1	C₁₈H₃₄O₂	hydrocarbon
glycolic acid	79-14-1	C₂H₄O₃	alcohol, carboxylic acid
aspirin	50-78-2	C₉H₈O₄	ester, aromatic
oxalic acid	144-62-7	C₂H₂O₄	carboxylic acid
malonic acid	141-82-2	C₃H₄O₄	carboxylic acid
succinic acid	110-15-6	C₄H₆O₄	carboxylic acid
citric acid	77-92-9	C₆H₈O₇	carboxylic acid, alcohol
lactic acid	50-21-5	C₃H₆O₃	alcohol, carboxylic acid
acrilyc acid	79-10-7	C₃H₄O₂	carboxylic acid
malic acid	6915-15-7	C₄H₆O₅	carboxylic acid, alcohol
tartaric acid	133-37-9	C₄H₆O₆	carboxylic acid, alcohol
n-tetradecane	629-59-4	C₁₄H₃₀	hydrocarbon
limonene	138-86-3	C₁₀H₁₆	hydrocarbon
Cyclohexene	110-83-8	C₆H₁₀	hydrocarbon
Ibuprofen	15687-27-1	C₁₃H₁₈O₂	aromatic
Isooctane	540-84-1	C₈H₁₈	hydrocarbon
Menthol	89-78-1	C₁₀H₂₀O	hydrocarbon
Benzyl Alcohol	100-51-6	C₇H₈O	aromatic, alcohol
Methyl Benzoate	93-58-3	C₈H₈O₂	aromatic, ester
Cinnamaldehyde	104-55-2	C₉H₈O	aromatic
Citral	5392-40-5	C₁₀H₁₆O	aldehyde
Methyl stearate	112-61-8	C₁₉H₃₈O₂	hydrocarbon
2-Methyl tetrahydrofuran	96-47-9	C₅H₁₀O	ether
Diethylene glycol dimethyl ether	111-96-6	C₆H₁₄O₃	ether
Nitromethane	75-52-5	CH₃NO₂	nitro-compound

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Mixture is zeotropic.

Graph of azeotropic point displacement in function of pressure/temperature

Azeotropic data in function of pressure/temperature

Temperature	Pressure	x₁	x₂
K	bar	mol fract.

CAS Registry Number is a Registered Trademark of the American Chemical Society.