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Sigma-Aldrich

Bis(2-ethylhexyl) phosphate

97%

Synonym(s):

Bis(2-ethylhexyl) hydrogen phosphate, Di(2-ethylhexyl) phosphate, HDEHP, HDEHPA, ‘Dioctyl’ phosphate

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About This Item

Linear Formula:
[CH3(CH2)3CH(C2H5)CH2O]2P(O)OH
CAS Number:
298-07-7
Molecular Weight:
322.42
Beilstein/REAXYS Number:
1712988
EC Number:
206-056-4
MDL number:
MFCD00009492
UNSPSC Code:
12352100
PubChem Substance ID:
24854273
NACRES:
NA.22

Quality Level

100

assay

97%

form

liquid

refractive index

n20/D 1.443 (lit.)

mp

−60 °C (lit.)

solubility

ethanol: soluble 100 mg/mL, clear

density

0.965 g/mL at 25 °C (lit.)

SMILES string

CCCCC(CC)COP(O)(=O)OCC(CC)CCCC

InChI

1S/C16H35O4P/c1-5-9-11-15(7-3)13-19-21(17,18)20-14-16(8-4)12-10-6-2/h15-16H,5-14H2,1-4H3,(H,17,18)

InChI key

SEGLCEQVOFDUPX-UHFFFAOYSA-N

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General description

Bis(2-ethylhexyl)phosphate (HDEHP or HDEHPA) is an organophosphorus compound that has quaternarystructure. It can be generally used as lubricant additive, antiwear additive,and surfactants.

Application

Bis(2-ethylhexyl) phosphate is used:
  • To facilitated transport of chromium(III)through activated composite membrane (ACM).

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H302,H314

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

266.0 °F

flash_point_c

130 °C

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Purification of di-(2-ethylhexyl) phosphoric acid by precipitation of copper (II) di-(2-ethylhexyl) phosphate.
Partridge JA and Jensen RC.
J. Inorg. Nucl. Chem., 31(8), 2587-2589 (1969)
Spas D Kolev et al.
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Takahiko Ban et al.
Langmuir : the ACS journal of surfaces and colloids, 28(29), 10682-10687 (2012-06-26)
We have investigated the transient pore dynamics in a chemically destabilized liquid membrane in buffer solutions at macroscopic scale. A hole opened and closed repeatedly in response to pH in the surrounding media when the concentration of surfactant in the
Kinetics and mechanism of the interfacial mass transfer of europium (3+) and americium (3+) in the system bis (2-ethylhexyl) phosphate-n-dodecane-sodium chloride-hydrochloric acid-water.
Danesi PR and Vandegrift GF.
The Journal of Physical Chemistry, 85(24), 3646-3651 (1981)
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