Phosphorous acid

CAS Number 10294-56-1
Molecular Formula H3O3P
Molecular Weight 81.995 g/mol
LogP 1.15
  • Phosphorous acid
  • 10294-56-1
  • Caswell No. 663I
  • EINECS 233-663-1
  • EPA Pesticide Chemical Code 076002
  • UNII-95E079716M
  • 858711-57-6


HPLC Separation of Phosphorous and Phosphoric Acids
  Application Notes: Phosphorus and phosphoric acid were separated on Obelisc N and Primesep D columns. On Obelisc N both acids retained by combination of HILIC and anion-exchange mechanisms. OnPrimesep D these inogranic acids are retained by anion-exchange mechanism. Both columns and methods can be used for analysis of hydrophilic organic and inorganic acids with multi-mode or single mode approach Application Columns: Primesep D, Obelisc N Application compounds: Phosphorous Acid, Phosphoric Acid Detection technique: UV, LC/MS, ELSD/CAD  

Condition 1

Column Primesep D, 3.2x150 mm, 5 µm, 100A
Mobile Phase MeCN
Buffer AmFm
Flow Rate 0.5 ml/min
Detection ELCD

Condition 2

Column Obelisc N, 4.6x50 mm, 5 µm, 100A
Mobile Phase  MeCN
Buffer AmFm
Flow Rate 0.5 ml/min
Detection ELSD


Class of Compounds  Acid, Fungicide,  Hydrophilic, Ionizable
Analyzing Compounds Phosphorous Acid,  Phosphoric Acids

Application Analytes:

Phosphoric Acid
Phosphorous acid