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Phosphorus Pentoxide

Phosphorus pentoxide is a deliquescent compound prepared by reacting phosphorus with air. It is a commonly used as dehydrating and condensing agent in organic synthesis.
  • white powder
  • 1314-56-3
  • P4O10
  • 141.945
  • 215-236-1
Availability:

SPECIFICATION


SPECIFICATION


ANALYSIS  RESULT

ITEM

STANDARD

TEST RESULT

Appearance

WHITE SOFT POEDER

WHITE SOFT POEDER

Purity

99%

99.5%

Insoluble Substance in water

0.02%

0.01%

FE PPM

10

5

HEAVY METAL,PPM

20

17

P2O3

0.02

0.009

As

100

55


APPLICATION


APPLICATION


Phosphorus pentachloride has been used for the vaccum distillation of 1-methyl-2-pyrrolidinone (NMP), which was employed as mobile phase in a chromatographic analysis.

It may be used as one of the reaction components in the synthesis of dichlorine heptoxide (Cl2O7) and transition-metal phosphides (Ni2P, Co2P and MoP). P2O5 supported on alumina can be used for the solvent-free and microwave-assisted preparation of 1, 5-benzodiazepine analogs. P2O5/KX (X = Br, I) reagent system may be used for the transformation of alcohols into the corresponding alkyl iodides and bromides.


Phosphorus pentoxide/methanesulfonic acid (PPMA) may be used as a condensing agent and solvent for the synthesis of:

  •  High molecular weight poly(benzoxazole)s via direct polycondensation of aromatic dicarboxylic acids containing phenyl ether structure with 3,3′-dihydroxybenzidine dihydrochloride.

  • Aromatic poly(phenylene ether ether ketone)s via direct self-polycondensation of 4-(4′-phenoxyphenoxy)benzoic acids.

     1,3-1H-dibenzimidazole-benzene by the reaction of isophthalic acid with 1,2-diaminobenzene.

  • Dehydrating agent used for halogenation with tetrabutylammonium halides.


DESCRIPTION


DESCRIPTION


Phosphorus pentoxide crystallizes in at least four forms or polymorphs. The most familiar one, a metastable form, comprises molecules of P4O10. Weak van der Waals forces hold these molecules together in a hexagonal lattice (However, in spite of the high symmetry of the molecules, the crystal packing is not a close packing. The structure of the P4O10 cage is reminiscent of adamantane with Td symmetry point group. It is closely related to the corresponding anhydride of phosphorous acid, P4O6. The latter lacks terminal oxo groups. Its density is 2.30 g/cm3. It boils at 423 °C under atmospheric pressure; if heated more rapidly it can sublimate. This form can be made by condensing the vapor of phosphorus pentoxide rapidly, and the result is an extremely hygroscopic solid.

The other polymorphs are polymeric, but in each case the phosphorus atoms are bound by a tetrahedron of oxygen atoms, one of which forms a terminal P=O bond involving the donation of the terminal oxygen p-orbital electrons to the antibonding phosphorus-oxygen single bonds. The macromolecular form can be made by heating the compound in a sealed tube for several hours, and maintaining the melt at a high temperature before cooling the melt to the solid.The metastable orthorhombic "O"-form (density 2.72 g/cm3, melting point 562 °C) adopts a layered structure consisting of interconnected P6O6 rings, not unlike the structure adopted by certain polysilicates. The stable form is a higher density phase, also orthorhombic, the so-called O' form. It consists of a 3-dimensional framework, density 3.5 g/cm3. The remaining polymorph is a glass or amorphous form; it can be made by fusing any of the others.


PACKAGE&STORAGE


PACKAGE


50kg/bag, 18MT/20ft Container.


phosphorus pentoxide..


STORAGE


The warehouse is ventilated and dried at low temperature; Store separately from alkali and inflammable materials.


storage of Phosphorus pentoxide ..storage of Phosphorus pentoxide .


FAQ


FAQ


Q1: May I get sample?

A1: Free sample is available, you only need to pay freight.


Q2: How long does it take for me to get sample?

A2: Usually it will cost about 5 days after delivery.


Q3: How can I place an order?

A3: You can contact us about your order details  by E-mail, WhatsApp, Skype, etc.


Q4: How can you guarantee your products are qualified?

A4: We will test the goods and issue COA before delivery



Acetyl Tributyl Citrate

Q4: How can you guarantee your products are qualified?

A4: We will test the goods and issue COA before delivery





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