Phosphoric acid - ACS reagent - more than or equal to 85 wt. % in H2O

Code: 695017-500MLSIG D2-231

Application

Phosphoric acid may be employed as standard for the determination of phosphorus-31 nuclear magnetic resonance (31P NMR) chemical shifts of the common p...


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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. 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.As external standard during the acid-labile phosphorylation of histone H4 by 31P NMR spectroscopy.As reference standard to investigate the surface species present on silica/alumina-supported sodium phosphates by pre- and postreaction MAS31P-NMR and FTIR spectroscopies.As catalyst in the vapor-phase Fries rearrangement of phenylacetate at 623K over a series of surface modified and unmodified ZSM-5.

General description

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

Other Notes

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

Packaging

2.5 L in poly bottle

100, 12×100, 500 mL in poly bottle

anion tracesnitrate (NO3-): ≤5 ppm, sulfate (SO42-): ≤0.003%, chloride (Cl-): ≤3 ppm
assay≥85% H3PO4 basis (by NaOH, titration)
bp158 °C (lit.)
cation tracesSb: ≤0.002%, K: ≤0.005%, Ca: ≤0.002%, As: ≤1 ppm, Na: ≤0.025%, Mg: ≤0.02%, heavy metals: ≤0.001% (by ICP), Mn: ≤0.5 ppm, Fe: ≤0.003%
colorAPHA: ≤10
concentration≥85 wt. % in H2O
density1.685 g/mL at 25 °C (lit.)
formliquid
Gene Informationhuman ... SRC(6714)
gradeACS reagent
impuritiesreducing substances, passes test, ≤0.001% volatile acids (as CH3COOH)
InChI keyNBIIXXVUZAFLBC-UHFFFAOYSA-N
InChI1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
mp~40 °C (lit.)
Quality Level200
SMILES stringOP(O)(O)=O
technique(s)NMR: suitable
vapor density3.4 (vs air)
vapor pressure5 mmHg ( 25 °C), 2.2 mmHg ( 20 °C)
Cas Number7664-38-2
Hazard Class8
Un Number1805
Pack GroupIII
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