Di (2-ethylhexyl) Phosphate (P204)

Di 2 ethylhexyl phosphate (P204), also known as bis(2-ethylhexyl) phosphate, is an
organophosphorus compound with the chemical formula C16H35O4P. It is a colorless
to pale yellow liquid that is widely used in various industrial applications.

CAS No.: 298-07-7

Molecular formula: (C8H17O)2PO2H

Molecular weight: 322.42 (according to the Standard Atomic Weights 1987)

Structure Diagram of Di (2-ethylhexyl) Phosphate (P204)
CAS No. 298-07-7
Molecular formula (C8H17O)2PO2H
Molecular weight 322.42 (according to the Standard Atomic Weights 1987)
Molecular structure diagram
Di (2-ethylhexyl) Phosphate (P204) of Molecular Structure Diagram

Properties: Colorless or light yellow oily liquid; soluble in alcohol and other
organic solvents. Freezing point: -60℃; boiling point: 209℃ (10 mmHg).

Introduction of Di (2-ethylhexyl) Phosphate (P204)
01
Application: This product is an acidic phosphorus extractant, mainly used for
extraction and separation of rare metals and rare earths, and can also be used in
medicine, printing and dyeing, petrochemical wastewater treatment and other
industries.

02
Packaging: 200 kg/plastic barrel; 1000 L/IBC ton barrel.

03
Storage and transportation: Handled with care during transportation to prevent
impact. Stored in a cool, ventilated and dry warehouse, ensuring fire prevention
and rain proof.

Specifications of Di (2-ethylhexyl) Phosphate (P204)
Item Export Grade Superior Grade Industrial Grade
Content % ≥95.0 ≥93.0 ≥90.0
Monooctyl Phosphate % ≤2.0 ≤2.5 ≤2.7
Chroma (Pt-Co Color Number) ≤100 ≤150 ≤200
Acid Value (mgKOH/g) 159—189 ------
Density (20℃) g/mL 0.9736—0.9756 0.9715—0.9735 ------
Viscosity (cp) 25℃ mm2/s 42±3 42±5 ------
Flash Point (open cup method) ℃ ≥160 ≥150 ------
Refractive Index（Nd20） 1.4434—1.4444 1.4430—1.4440 ------
Monometallic Impurity (ppm) This item can be controlled below 60 according to
client demand ------

How Does Di(2-Ethylhexyl) Phosphate (P204) Function?
01
Complex Formation: P204 acts as a complexing agent, forming coordination compounds
with metal ions present in an aqueous solution. When P204 is dissolved in an
organic solvent, it creates an interface between the aqueous and organic phases.

02
Selective Extraction: P204 selectively extracts specific metal ions from the
aqueous solution into the organic phase. The metal ions form complexes with P204,
which have higher solubility in the organic solvent compared to the aqueous phase.

03
Phase Separation: After the extraction, the organic phase containing the metal-
P204 complexes is separated from the aqueous phase. This separation is facilitated
by differences in density or the use of specific techniques such as centrifugation
or settling.

04
Phase Separation: The metal-P204 complexes in the organic phase can be further
processed to recover the desired metal. Stripping agents or solutions are used to
break the complexes, releasing the metal ions into a new aqueous solution or
suitable medium.

05
Purification and Recycling: The metal ions can undergo subsequent purification
steps to obtain a high-purity metal product. Meanwhile, the organic phase,
containing P204, can be recycled by removing impurities and reusing it in the
extraction process.

Precautions for Di(2-ethylhexyl) Phosphate (P204)
Is P204 Toxic or Hazardous?
Di(2-ethylhexyl) Phosphate (P204) is considered a moderately toxic substance. It
can cause irritation to the skin, eyes, and respiratory system upon direct contact
or inhalation. It is essential to handle P204 with appropriate safety precautions,
including the use of protective equipment and adherence to recommended handling
procedures.

Are There Any Environmental Concerns Associated with P204?
Di(2-ethylhexyl) Phosphate (P204) has low aquatic toxicity and is not persistent
in the environment. However, like other organophosphates, it should be handled and
disposed of responsibly to prevent contamination of water bodies and ecosystems.

We have been engaged in refrigeration and air conditioning industry for many
years, if you have needs, please contact us.

Minimum Order: 1 long tons

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