white powder
1314-56-3
P4O10
141.945
215-236-1
Availability: | |
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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.
STORAGE
The warehouse is ventilated and dried at low temperature; Store separately from alkali and inflammable materials.
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
Q4: How can you guarantee your products are qualified?
A4: We will test the goods and issue COA before delivery