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)
USAGE:Polyphosphoric acid (PPA) has strong dehydration, low nucleophilicity and moderate acidity. Unlike sulfonic acid, polyphosphoric acid does not generally oxidize reactants, and can dissolve in organic solvents, although its acidity is weaker than sulfonic acid, but the dehydration is equivalent to 100% sulfonic acid, so is widely used in the laboratory . [3]
Catalytic intramolecular cyclization Polyphosphoric acid can catalyze intramolecular cyclization reactions of carboxylic acid, ester, ketone, aldehyde, alcohol, alkene and hydrazone [1], such as the synthesis of quinone under PPA catalysis (formula 1). Many quinoline and quinoline derivatives are synthesized in the PPA catalyst [3], such as in excess of PPA catalyzed N-ethoxycarbonyl ethyl spirocyclic tetrahydroquinoline cyclization, the yield of about 60% (type 2). [3]
In organic synthesis as a cyclization agent and acylating agent. Also used as orthophosphate substitutes and analytical reagents.
Product Name: Polyphosphoric acids
Synonyms:acidepolyphosphorique;acidesuperphosphorique;condensedphosphoricacid;condensedphosphoricacid(non-specificname);phospholeum;superphosphoricacid;PPA;POLYPHOSPHORIC ACID
CAS: 8017-16-1
MF: (H)n+2.(P)n.(O)3n+1
MW: 0
EINECS: 232-417-0
Product Categories: UVCBs-polymer;Acids&Bases;Alternative Energy;ElectrolytesEssential Chemicals;Materials Science;Reagent Grade;Chemical Synthesis;Inorganic Acids;Synthetic Reagents;inorganic acid;Reagent Grade Acids &;Acids &;Alternative Energy;Analytical Reagents;Analytical Reagents for General Use;Analytical/Chromatography;Bases;Battery Electrolyte Materials;Electrolytes;Essential Chemicals;Materials Science;Reagent Grade;Research Essentials;Organics
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)
USAGE:Polyphosphoric acid (PPA) has strong dehydration, low nucleophilicity and moderate acidity. Unlike sulfonic acid, polyphosphoric acid does not generally oxidize reactants, and can dissolve in organic solvents, although its acidity is weaker than sulfonic acid, but the dehydration is equivalent to 100% sulfonic acid, so is widely used in the laboratory . [3]
Catalytic intramolecular cyclization Polyphosphoric acid can catalyze intramolecular cyclization reactions of carboxylic acid, ester, ketone, aldehyde, alcohol, alkene and hydrazone [1], such as the synthesis of quinone under PPA catalysis (formula 1). Many quinoline and quinoline derivatives are synthesized in the PPA catalyst [3], such as in excess of PPA catalyzed N-ethoxycarbonyl ethyl spirocyclic tetrahydroquinoline cyclization, the yield of about 60% (type 2). [3]
In organic synthesis as a cyclization agent and acylating agent. Also used as orthophosphate substitutes and analytical reagents.
