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30417

Sigma-Aldrich

Phosphoric acid

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥85%

Synonym(s):

Orthophosphoric acid

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About This Item

Linear Formula:
H3PO4
CAS Number:
7664-38-2
Molecular Weight:
98.00
Beilstein/REAXYS Number:
1921286
EC Number:
231-633-2
MDL number:
MFCD00011340
UNSPSC Code:
12352106
PubChem Substance ID:
329753503

grade

ACS reagent
puriss. p.a.

Quality Level

200

agency

USP/NF
reag. ISO
reag. Ph. Eur.

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

assay

≥85%

form

liquid

impurities

reducing impurities, in accordance
 residual solvents, in accordance
 substances precipitated by ammonia, in accordance
≤0.001% KMnO4 red. matter (as O)
≤0.001% heavy metals (as Pb)
≤0.001% in water insoluble matters
≤0.001% volatile acids (as CH3COOH)

bp

158 °C (lit.)

mp

~40 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤2 mg/kg
fluoride (F-): ≤1 mg/kg
nitrate (NO3-): ≤3 mg/kg
phosphite, hypophosphite (as H3PO3): ≤20 mg/kg
phosphite, hypophosphite (as H3PO3): in accordance
sulfate (SO42-): ≤30 mg/kg

cation traces

As: ≤0.5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤5 mg/kg
K: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤0.5 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sb: ≤2 mg/kg
Zn: ≤2 mg/kg

SMILES string

OP(O)(O)=O

suitability

passes test for appearance of solution

InChI

1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N

Gene Information

human ... SRC(6714)

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Application


  • Cooperative Rh/Achiral Phosphoric Acid-Enabled [3+3] Cycloannulation of Carbonyl Ylides with Quinone Monoimines: Synthesis of Benzofused Dioxabicyclo[3.2.1]octane Scaffolds.: This study demonstrates the catalytic role of phosphoric acid in a [3+3] cycloannulation reaction, enabling the efficient synthesis of complex organic scaffolds (Tu et al., 2024).

Other Notes

Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).
The article number 30417-4X2.5L will be discontinued. Please order the single bottle 30417-2.5L which is physically identical with the same exact specifications.
The article number 30417-4X2.5L-M will be discontinued. Please order the single bottle 30417-2.5L-M which is physically identical with the same exact specifications.
The article number 30417-6X1L will be discontinued. Please order the single bottle 30417-1L which is physically identical with the same exact specifications.
The article number 30417-6X1L-M will be discontinued. Please order the single bottle 30417-1L-M which is physically identical with the same exact specifications.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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Internal versus external surface active sites in ZSM-5 zeolite: Part 1. Fries rearrangement catalyzed by modified and unmodified H3PO4/ZSM-5.
Ghiaci M, et al.
Applied Catalysis A: General, 298, 32-39 (2006)
D S Marinier et al.
Journal of lipid research, 29(9), 1237-1243 (1988-09-01)
In order to study the lipid composition of human white matter, we have developed a 31P NMR spectroscopy method, which allows the determination and quantitation of the main phospholipids found in biological membranes. The technique is based upon the use
P Meneses et al.
Journal of lipid research, 29(5), 679-689 (1988-05-01)
The common phospholipids from biological sources were quantitated using phosphorus-31 nuclear magnetic resonance (NMR) spectroscopy in conjunction with an analytical reagent composed of two parts: 1) 2 ml of reagent chloroform in which was dissolved 0.01-100 mg of crude tissue
J M Fujitaki et al.
Biochemistry, 20(12), 3658-3664 (1981-06-09)
Phosphorus-31 nuclear magnetic resonance (31P NMR) is used to investigate acid-labile phosphorylation of histone H4. 31P NMR detects phosphorylated histidine residues in in vitro enzymatically phosphorylated H4. The source of kinase is nuclei from either regenerating rat liver or Walker-256
Alessio Ciulli et al.
Journal of medicinal chemistry, 49(16), 4992-5000 (2006-08-04)
Mapping interactions at protein-ligand binding sites is an important aspect of understanding many biological reactions and a key part of drug design. In this paper, we have used a fragment-based approach to probe "hot spots" at the cofactor-binding site of
View All Related Papers

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