208213

Polyphosphoric acid

reagent grade, 115% H₃PO₄ basis

• Fórmula lineal: H_n+2P_nO_3n+1
• Número de CAS: 8017-16-1
• EC Number: 232-417-0
• MDL number: MFCD00084480
• UNSPSC Code: 12352106
• eCl@ss: 38070203
• NACRES: NA.21

Propiedades

• grade: reagent grade
• Quality Level: 200
• assay: 115% H₃PO₄ basis
• form: viscous liquid
• greener alternative product characteristics: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• bp: 300 °C (lit.)
• density: 2.06 g/mL at 25 °C
• greener alternative category: Enabling,
• 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

Descripción

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.

Other Notes

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Información de seguridad

• pictograms: GHS05
• signalword: Danger
• hcodes: H290,H314
• pcodes: P234 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 1