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Merck
CN

237825

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
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24854273
EC Number:
206-056-4
Beilstein/REAXYS Number:
1712988
MDL number:
MFCD00009492

Key Documents

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Product Name

Bis(2-ethylhexyl) phosphate, 97%

InChI key

SEGLCEQVOFDUPX-UHFFFAOYSA-N

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)

SMILES string

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

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.)

functional group

phosphate

Quality Level

100

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Application

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

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.

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

WGK 1

flash_point_f

266.0 °F

flash_point_c

130 °C

ppe

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCX2118
MKCW4261
MKCW4262
MKCV2998
MKCV3000

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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  4. Is Product 237825, Bis(2-ethylhexyl) phosphate, a solid or a liquid?

    Although the product is sold by weight, it is a liquid. The density is 0.965 g/mL at 25 °C(lit.).

  5. Is Product 237825, Bis(2-ethylhexyl) phosphate, also known as HDEHP?

    Yes. HDEHP is a synonym for Bis(2-ethylhexyl) phosphate.

  6. What is the solubility of Product 237825, Bis(2-ethylhexyl) phosphate?

    This product is soluble in ethanol (100 mg/mL), yielding a clear solution.

  7. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

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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)
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)
Zaiwu Yuan et al.
Langmuir : the ACS journal of surfaces and colloids, 25(16), 8974-8981 (2009-09-02)
A salt-free cationic and anionic (catanionic) surfactant system was formed by mixing a double-tailed di-(2-ethylhexyl) phosphoric acid (DEHPA, commercial name P204), which is an excellent extractant of rare earth metal ions, with a single-tailed cationic trimethyltetradecylammonium hydroxide (TTAOH) in water.
Gulsin Arslan et al.
Journal of hazardous materials, 165(1-3), 729-735 (2008-11-28)
The facilitated transport of chromium(III) through activated composite membrane (ACM) containing di-(2-ethylhexyl) phosphoric acid (DEHPA) was investigated. DEHPA was immobilised by interfacial polymerisation on polysulfone layer which was deposited on non-woven fabric by using spin coater. Then, ACM was characterised
Spas D Kolev et al.
Talanta, 78(3), 795-799 (2009-03-10)
A polymer inclusion membrane (PIM) is reported consisting of 45% (m/m) di(2-ethylhexyl)phosphoric acid (D2EHPA) immobilized in poly(vinyl chloride) (PVC) for use as a solid phase absorbent for selectively extracting Zn(II) from aqueous solutions in the presence of Cd(II), Co(II), Cu(II)
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