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237825

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:
1712988
EC Number:
206-056-4
MDL number:
MFCD00009492
UNSPSC Code:
12352100
PubChem Substance ID:
24854273
NACRES:
NA.22
Pricing and availability is not currently available.

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.)

functional group

phosphate

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

Signal Word

Danger

Hazard Statements

H302,H314

Hazard Classifications

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

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

266.0 °F

Flash Point(C)

130 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX2118
MKCW4261
MKCW4262
MKCV2998
MKCV3000

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Tributyl phosphate 97%

Sigma-Aldrich

158615

Tributyl phosphate

Tributyl phosphate ≥99%

Sigma-Aldrich

240494

Tributyl phosphate

Marco Iammarino et al.
Veterinaria italiana, 54(1), 41-47 (2018-04-10)
Strontium-90 (90Sr) is a fission product, resulting from the use of uranium and plutonium in nuclear reactors and weapons. Consequently, it may be found in the environment as a consequence of nuclear fallouts, nuclear weapon testing, and not correct waste
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.
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)
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.
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Questions

1–6 of 6 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

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

    1 answer

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

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

    1 answer

    1. 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.

      Helpful?

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

    1 answer

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

      Helpful?

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

    1 answer

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

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