Phosphoric acid ACS reagent, 85 wt. in H2O, 500mL

SKU:
695017-500ML
  • $84.60

    • Description

    695017 Sigma-Aldrich 

    Phosphoric acid

    ACS reagent, ≥85 wt. % in H2O

    Synonym: Orthophosphoric acid

    • CAS Number 7664-38-2

       

    • Linear Formula H3PO4

       

    • Molecular Weight 98.00 

       

    •  Beilstein/REAXYS Number 1921286 

       

    •  EC Number 231-633-2

       

    •  MDL number MFCD00011340

    •  PubChem Substance ID 329761708

    • NACRES NA.21

    Description

    General description

    Phosphoric acid (H3PO4) is useful in industry for treating the metal surfaces to obtain better adhesion of paint and resin coatings.[6]

    Application

    Phosphoric acid may be employed as standard for the determination of phosphorus-31 nuclear magnetic resonance (31P NMR) chemical shifts of the common phospholipids.[1] It may be employed in the following studies:
    • As external standard for the analysis of lipid composition of human white matter by 31P NMR spectroscopy.[3]
    • As external standard during the acid-labile phosphorylation of histone H4 by 31P NMR spectroscopy.[2]
    • As reference standard to investigate the surface species present on silica/alumina-supported sodium phosphates by pre- and postreaction MAS31P-NMR and FTIR spectroscopies.[4]
    • As catalyst in the vapor-phase Fries rearrangement of phenylacetate at 623K over a series of surface modified and unmodified ZSM-5.[5]

    Packaging

    100, 12×100, 500 mL in poly bottle

    2.5 L in poly bottle

    Other Notes

    Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).

    Properties

    Related Categories Acids, Acids & Bases, Chemical Synthesis, Inorganic Acids, Synthetic Reagents More...
    grade   ACS reagent
    vapor density   3.4 (vs air)
    vapor pressure   2.2 mmHg ( 20 °C)
      5 mmHg ( 25 °C)
    InChI Key   NBIIXXVUZAFLBC-UHFFFAOYSA-N
    concentration   ≥85 wt. % in H2O
    impurities   reducing substances, passes test
      ≤0.001% volatile acids (as CH3COOH)
    color   APHA: ≤10
    bp   158 °C (lit.)
    mp   ~40 °C (lit.)
    density   1.685 g/mL at 25 °C (lit.)
    anion traces   chloride (Cl-): ≤3 ppm
      nitrate (NO3-): ≤5 ppm
      sulfate (SO42-): ≤0.003%
    cation traces   As: ≤1 ppm
      Ca: ≤0.002%
      Fe: ≤0.003%
      K: ≤0.005%
      Mg: ≤0.02%
      Mn: ≤0.5 ppm
      Na: ≤0.025%
      Sb: ≤0.002%
      heavy metals (as Pb): ≤0.001%
    Gene Information   human ... SRC(6714)