Product Name:    Diphenylphosphoryl azide

Synonyms:    phosphorazidicacid,diphenylester;(PHO)2PO-N3;PHOSPHORIC ACID DIPHENYL ESTER AZIDE;PS-DPPA;Diphenylphosphorazindate（DPPA）;Diphenylphosphonicazide,97%;DPPA polymer-bound, PS-DPPA;DPPA, Phosphoric acid diphenyl ester azide

CAS:    26386-88-9

MF:    C12H10N3O3P

MW:    275.2

EINECS:    247-644-0

Product Categories:    Pharmaceutical Intermediates;Peptide Coupling Reagents;Amination;Biochemistry;Condensation & Active Esterification;Coupling Reactions (Peptide Synthesis);Peptide Synthesis;Synthetic Organic Chemistry;carboxylic ester

Diphenylphosphoryl azide (DPPA) is a colorless or pale yellow liquid which boils at 134-136 °C/0.2 mmHg, and it will be stable at room temperature under shading. It is non-explosive just like the other phosphorazidate. When DPPA is stored at room temperature for a long time, it might be slowly and partially hydrolyzed with moisture in air to produce diphenyl phosphate and toxic explosive hydrazoic acid. In this case, it will be recommended to use after washing DPPA with aqueous sodium hydrogen carbonate followed by drying.