Name: Phosphoric Acid ACS Reagent 85 Wt. % In H2O 100mL, case/12 | True Meds
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Category: ACS Grade Chemicals

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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