|
| | Polyphosphoric acid Basic information |
| | Polyphosphoric acid Chemical Properties |
| Melting point | -20°C | | Boiling point | 550 °C | | density | 2.06 g/mL at 25 °C | | vapor pressure | 2 hPa (20 °C) | | storage temp. | Store below +30°C. | | solubility | Methanol (Soluble), Water (Soluble) | | pka | 0.91[at 20 ℃] | | form | Viscous Liquid | | Specific Gravity | 2.06 | | color | Colorless | | Water Solubility | MAY DECOMPOSE | | Sensitive | Hygroscopic | | Merck | 14,7580 | | Stability: | Stable. Incompatible with strong bases. Hygroscopic. | | CAS DataBase Reference | 8017-16-1(CAS DataBase Reference) | | EPA Substance Registry System | Polyphosphoric acids (8017-16-1) |
| | Polyphosphoric acid Usage And Synthesis |
| Description | Superphosphoric acid is made by
the concentration of regular wet-process acid up to P2O5
concentrations of 78%. Granular polyphosphates suitable
for bulk blending are made by reacting ammonia with
regular wet process acid of 52% P2O5 content and using the
heat of reaction to drive off water to produce a phosphate
melt of 10-43-0, with about 40% of the phosphorus in the
polyphosphate form. These materials are, however, not
suitable for bulk blending due to their “sticky” nature (10). | | Chemical Properties | Viscous, water-white liquid. Water solu-
ble. Does not crystallize on standing; hygroscopic.
The commercial acid is a mixture of orthophos-
phoric acid with pyrophosphoric, triphosphoric, and
higher acids and is sold on the basis of its calcu-
lated content of H3PO4, e.g., 115%. Superphospho-
ric acid is a similar mixture sold at 105% H3PO4.
These acids revert slowly to orthophosphoric acid
on dilution with water.
| | Uses | Dehydrating, catalytic, and sequestering agents,
for metal treating; many applications where a con-
centrated monooxidizing acid is needed; laboratory
reagent.
| | Uses | Polyphosphoric Acid is a ligand used as an analytical tool to image nanoparticles through photon emission topography. Used also in the synthesis of pharmaceuticals. | | Definition | ChEBI: A polymerized phosphorus oxoacid of general formula HO[PO2OH]nH formed by condensation of orthophosphoric acid molecules and containing a backbone chain consisting of alternating P and O atoms covalent
y bonded together. | | General Description | Polyphosphoric acid (PPA) is widely employed as acylation and alkylation reagent in various reactions. It is a strong mineral acid with excellent dehydrating properties. | | Hazard | Toxic by ingestion; strong irritant. | | Agricultural Uses | Polyphosphoric acid is obtained by heating the wetprocess
phosphoric acid. It contains around 72%
phosphorus (as P2O5) and represents a series of
phosphoric acids containing more than one atom of
phosphorus (such as H4P2O7). The general formula is
Hn+2PnO3n+1. |
| | Polyphosphoric acid Preparation Products And Raw materials |
| Raw materials | Phosphoric acid | | Preparation Products | 5-Aminoindole-->2-(3-CHLORO-4-FLUOROPHENYL)INDOLE-->6-CHLORO-2-(TRIFLUOROMETHYL)QUINOLINE-4-CARBOXYLIC ACID-->3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine-->2-(TRIFLUOROMETHYL)-5-METHYLQUINOLINE-4-CARBOXYLIC ACID-->Ziprasidone-->DIPHENYL PHTHALATE-->(5-BROMO-1H-INDOL-2-YL)METHANOL-->Pyrophosphoric acid-->ETHYL 4,6-DICHLORO-3-FORMYL-1H-INDOLE-2-CARBOXYLATE-->3-[1,1'-Biphenyl]-4-yl-1,2,3,4-tetrahydro-1-naphthol-->5-Chloroindole-2-carboxylic acid-->2-(4-ETHOXY-PHENYL)-1H-INDOLE-->Potassium triphosphate-->4-(1H-INDOL-2-YL)-PHENYLAMINE-->4-bromo-2-(trifluoromethyl)quinoline-->5-Bromoindole-2-carboxylic acid-->1H-Pyrazolo[3,4-b]pyridine,3-methyl-(9CI)-->4-Oxo-9,10-dihydro-4H-benzo(4,5)-cyclohepta-(1,2b)thiophene-->2-(4-FLUOROPHENYL)-1H-INDOLE-3-CARBALDEHYDE-->6-Bromo-2,3-dihydro-4H-chromen-4-one-->4-HYDROXY-2-(TRIFLUOROMETHYL)QUINOLINE-->2-(Ethoxycarbonyl)-5-bromo-indole-->3-(Trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazine-->Ethyl 5-chloro-2-indolecarboxylate-->7-Bromoisoquinoline-->2,5-BIS(4-AMINOPHENYL)-1,3,4-OXADIAZOLE-->liquid crystalline heterocyclic polymer-->solid phosphoric acid catalyst T-49-->new scale corrosion inhibitor W-331-->6-(4-FLUOROPHENYL)INDOLE-->2-(4-BROMO-PHENYL)-1H-INDOLE-->Setiptiline-->corrosion and scale inhibitor NJ-213-->corrsion inhibitor SH-1-->prefiiming agent WT-302-1-->prefilming agent-corrosion inhibitor JS-204-->SODIUMSTARCHPHOSPHATE-->cleaning and prefilming agent JC-861-->Zaltoprofen |
|
