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04107

Sigma-Aldrich

Phosphoric acid

puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, 85.0-88.0%

Synonym(s):
Orthophosphoric acid
Linear Formula:
H3PO4
CAS Number:
Molecular Weight:
98.00
Beilstein:
1921286
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

grade

puriss.

assay

85.0-88.0%

form

liquid

quality

meets analytical specification of Ph. Eur., BP, NF, FCC

impurities

alkali phosphates, in accordance
residual solvents, in accordance
substance precip. by Ammonia, in accordance
≤0.0005% heavy metals (as Pb)
≤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-): ≤5 mg/kg
fluoride (F-): ≤5 mg/kg
nitrate (NO3-): ≤5 mg/kg
nitrate (NO3-): in accordance
phosphite, hypophosphite (as H3PO3): ≤30 mg/kg
phosphite, hypophosphite (as H3PO3): in accordance
sulfate (SO42-): ≤50 mg/kg
sulfate (SO42-): in accordance

cation traces

As: ≤2 mg/kg
Cd: ≤3 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤3 mg/kg
Zn: ≤10 mg/kg

suitability

passes test for appearance of solution

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)

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Other Notes

Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).
The article number 04107-4X2.5L will be discontinued. Please order the single bottle 04107-2.5L which is physically identical with the same exact specifications.
The article number 04107-6X1L will be discontinued. Please order the single bottle 04107-1L which is physically identical with the same exact specifications.

Certificate of Analysis

Certificate of Origin

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
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
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)
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

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