• British Pharmacopoeia Volume IV
  • Appendices
  • Appendix I A. General Reagents

Ammonium Dihydrogen Orthophosphate
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Ammonium Dihydrogen Orthophosphate Ammonium dihydrogen phosphate; (NH4)H2PO4  =  115.0 (7722-76-1)

Analytical reagent grade of commerce.

pH of a 2.3% w/v solution, about 4.2, Appendix V L.