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)