2-Ethylhexanol
Technical Leaflet
M 2211 e
November 1999
Supersedes edition dated November 1992
庐 = Registered trademark of
BASF Aktiengesellschaft
Please file this publication in your
鈥淪olvents鈥? folder.
High-boiling point, low-volatility solvent for fats, waxes, dyes and
insecticides. Starting material for the manufacture of plasticizers,
lubricants and other chemical products such as raw materials for
paints and coatings.
Chemical nature 2-Ethylhexan-1-ol
2-Ethyl-1-hexanol;
Isooctanol
Molecular formula: C 8H 18O
Molar mass: 130.23 g/mol
CAS-No.: 104-76-7 EINECS-No.: 203-234-3
Delivery specification Property Value Unit Test method
Mass fraction
鈥? 2-ethylhexanol min. 99.5 % gas chromatography,
BASF method
鈥? water (on despatch) max. 0.05 % DIN 51777, part 1
Platinum-cobalt colour max. 10 鈥? DIN ISO 6271
General information can be found in [1].
Properties
2-ethylhexanol is a clear, mobile and neutral liquid with a characteristic
odour. It is miscible with most common organic solvents but its miscibility
with water is very limited.
2-ethylhexanol enters into the reactions that are typical of primary
alcohols. For instance, it readily forms esters with various acids.
Chemicals
Physical data The following physical data have been compiled from the literature as well
as from BASF measurements and calculations. They provide no guarantee
of properties in the legal sense, however.
Boiling range at 1013 mbar 183 鈥?185 掳C
(DIN 53171; 95 Vol.-%; 2 鈥? 97 ml)
0.832 鈥? 0.834 g/cm 3
Density at 20 掳C (DIN 51757)
Refractive index n 20 (DIN 53491) 1.431 鈥?1.432
D
Refractive index n 40 1.4237
D
Freezing point (at 1013 mbar) 鈥? 76 掳C (glass trans. temperature)
T [掳C] Vapour Density Viscosity*) Surface
pressure tension*)
[g/cm 3]
P [mbar] [mPa 路 s] [mN/m]
鈥?10 0.002
0 0.01 0.8476 17.7 25.1
10 0.04 0.8401 12.2 24.2
20 0.14 0.8326 8.8 23.2
40 0.8 0.8178 5.1 21.4
50 1.8
60 3.9 0.8031 3.2 19.6
80 14.4 0.7886 2.1 17.8
100 43 0.7743 1.4 16.1
120 109
140 243
160 487
180 897
184.3 1013
T [掳C] Specific heat capacity Specific heat capacity Thermal
of the liquid of the gas conductivity
C p fl. [kJ/(kg 路 K)] C p g. [kJ/(kg 路 K)] [mW/(m 路 K)]
0 2.36 1.42 41.2
10 2.38 1.46 70.8
20 2.41 1.51 95.8
40 2.45 1.60 133.8
60 2.50 1.69 158.8
80 2.55 1.77 174.5
100 2.60 1.85 184.3
120 2.64 1.93 191.8
140 2.68 2.01 200.7
Heat of combustion (鈭? H c) at 25 掳C*) 38 044 kJ/kg
Heat of formation (鈭? H f) 鈥? 3 326 kJ/kg
Enthalpy of vaporization (鈭? H v) bei 1013 mbar 358 kJ/kg
Dipolar moment (碌) 1.8 D
Dielectric constant (v) at 90 掳C 4.41
Evaporation rate (DIN 53170; ether = 1) approx. 600
Solubility parameter at 25 掳C according to Hansen:
1/2
= 16.0 (MPa)
d
1/2
= 3.3 (MPa)
p
1/2
= 11.9 (MPa)
h
1/2
= 20.2 (MPa)
t
*) calculated
page 2 of 4 2-Ethylhexanol
Applications
2-Ethylhexanol is not widely used as a solvent. Its main application is as a
feedstock in the manufacture of low-volatility esters, the most important of
which is di-(2-ethylhexyl) phthalate (DOP, DEHP, Palatinol 庐 AH), which is
an all-purpose plasticizer for PVC and vinyl chloride copolymers. The
features of this plasticizer are its low volatility, excellent gelling power, its
great resistance to high and low temperatures and to water, and its
outstanding dielectric properties.
Other plasticizers that can be used to obtain specific properties are the
corresponding esters of 2-ethylhexanol and
adipic acid (e. g. Plastomoll 庐 DOA)
鈥?
鈥? para-hydroxybenzoic acid
鈥? sebacic acid
鈥? azelaic acid
鈥? trimellitic acid
鈥? stearic acid
鈥? terephthalic acid
鈥? phosporic acid, etc.
Additionally, phthalate plasticizers can be obtained from mixtures of
2-ethylhexanol and other alcohols.
Examples of other applications for 2-ethylhexanol are summarized below.
The list is by no means complete.
鈥? Low-volatility solvent (e. g. for resins, waxes, animal fats, vegetable oils
and petroleum derivatives).
鈥? Low-volatility ingredient in solvent blends for the dyestuffs and coatings
industry.
鈥? Flow and gloss improver in baking finishes.
鈥? Feedstock for the manufacture of ethoxylates (products of reaction
between 2-ethylhexanol and ethylene oxide).
鈥? Feedstock in the manufacture of herbicides.
鈥? Feedstock in the manufacture of extractants (e.g. for heavy metals).
鈥? In the production of the corresponding diester of maleic acid for use as
a starting material for surfactants.
鈥? Feedstock in the manufacture of 2-ethylhexyl sulphate which is used as
a surfactant for electrolytes.
鈥? In the production of 2-ethylhexyl esters of trialkyl phosphites which can
serve as a thermal stabilizer and antioxidant in plastics.
鈥? In the manufacture of particularly pure grades of DOP which act as
polychlorinated biphenyl substitutes in heavy-duty capacitors.
鈥? In antifoams for almost all aqueous systems (e. g. in the textile and
paper industries).
Literature [1] Technical Information Leaflet of BASF AG: 鈥淕as-chromatographic
determination of the degree of purity of solvents and plasticizers (a
review)鈥? (TI-CIW/ES 001 e).
Safety Data Sheet A Safety Data Sheet according to EU guideline 91/155/EWG is available
for n-Propanol.
page 3 of 4 2-Ethylhexanol
Note
The information submitted in this publication is based on our current
knowledge and experience. In view of the many factors that may affect
processing and application, these data do not relieve processors of the
responsibility of carrying out their own tests and experiments; neither do
they imply any legally binding assurance of certain properties or of suit-
ability for a specific purpose. It is the responsibility of those to whom we
supply our products to ensure that any proprietary rights and existing laws
and legislation are observed.
Printed in Germany
BASF Aktiengesellschaft
Unternehmensbereich Industriechemikalien
Globales Marketing Weichmacher und L枚semittel
67056 Ludwigshafen, Germany
4 von 4 2-Ethylhexanol
|