208213
Polyphosphoric acid
reagent grade, 115% H3PO4 basis
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About This Item
Linear Formula:
Hn+2PnO3n+1
CAS Number:
UNSPSC Code:
12352106
eCl@ss:
38070203
EC Number:
232-417-0
NACRES:
NA.21
MDL number:
Assay:
115% H3PO4 basis
Form:
viscous liquid
Grade:
reagent grade
grade
reagent grade
Quality Level
assay
115% H3PO4 basis
form
viscous liquid
greener alternative product characteristics
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sustainability
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bp
300 °C (lit.)
density
2.06 g/mL at 25 °C
greener alternative category
SMILES string
[P](=O)(O)(O)O.[p]21[o][p]([o][o]2)[o][o]1
InChI
1S/O5P2.H3O4P/c1-2-7-4-3-6(1)5-7;1-5(2,3)4/h;(H3,1,2,3,4)
InChI key
FVYIVXLIMHNYTD-UHFFFAOYSA-N
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.
Application
Polyphosphoric acid may be used in the synthesis of aromatic sulfones, N-substituted amides and 4-aminobenzophenones. It may also be used in dehydration, Fischer-Indole Synthesis, Beckmann Rearrangement and Schmidt Rearrangement reactions. It can be used as a catalyst in the synthesis of various aromatic ketones.
PPA may be used as a catalyst during the synthesis of dimethyl carbonate (DMC) from urea and methanol. It also acts as an absorbent for the ammonia generated in the process. PPA may be used to prepare silica-supported polyphosphoric acid (PPA-SiO2), an easy to handle, reusable heterogenous catalyst.
PPA may be used as a catalyst during the synthesis of dimethyl carbonate (DMC) from urea and methanol. It also acts as an absorbent for the ammonia generated in the process. PPA may be used to prepare silica-supported polyphosphoric acid (PPA-SiO2), an easy to handle, reusable heterogenous catalyst.
Other Notes
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Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
Storage Class
8A - Combustible corrosive hazardous materials
wgk
WGK 1
Regulatory Information
危险化学品
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906. Synthetic uses of polyphosphoric acid.
Denton DA and Suschitzky H.
Journal of the Chemical Society, 4741-4743 (1963)
Silica-supported polyphosphoric acid (PPA-SiO2): An efficient and reusable heterogeneous catalyst for ecofriendly organic synthesis.
Vekariya RH, et al.
Synthetic Communications, 46(3), 197-219 (2016)
Synthesis of dimethyl carbonate from urea and methanol using polyphosphoric acid as catalyst.
Sun J, et al.
J. Mol. Catal. A: Chem., 239(1), 82-86 (2005)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 208213-1KG | 04061838769527 |
| 208213-100G | 04061838769510 |
| 208213-25G | 04061838769534 |