Description
Description
Phosphoric Acid ACS Reagent ≥85 Wt. % In H2O 100mL Case/12
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
| grade | ACS reagent |
| vapor density | 3.4 (vs air) |
| vapor pressure | 2.2 mmHg ( 20 °C) |
| 5 mmHg ( 25 °C) | |
| 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% | |
| SMILES string | OP(O)(O)=O |
| InChI | 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4) |
| InChI key | NBIIXXVUZAFLBC-UHFFFAOYSA-N |
| Gene Information | human … SRC(6714) |
General description
Phosphoric acid (H3PO4) is useful in industry for treating the metal surfaces to obtain better adhesion of paint and resin coatings.
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.
GHS05
Signal word Danger
Hazard statements H290-H314
Precautionary statements P280-P301 + P330 + P331-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P390
RIDADR UN 1805 8 / PGIII
WGK Germany 1
Documents
Safety Data Sheet
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