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79617

Sigma-Aldrich

Phosphoric acid

BioUltra, ≥85% (T)

Synonym(s):
Orthophosphoric acid
Linear Formula:
H3PO4
CAS Number:
Molecular Weight:
98.00
Beilstein:
1921286
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.26

Quality Level

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

product line

BioUltra

assay

≥85% (T)

form

viscous liquid

impurities

insoluble matter, passes filter test
≤0.001% KMnO4-reducing matter (as O)
≤0.001% volatile acids (as CH3COOH)

refractive index

n20/D 1.433

bp

158 °C (lit.)

mp

~40 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

density

1.685 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤2 mg/kg
fluoride (F-): ≤1 mg/kg
nitrate (NO3-): ≤5 mg/kg
phosphite, hypophosphite (as H3PO3): ≤50 mg/kg
sulfate (SO42-): ≤30 mg/kg

cation traces

Ag: ≤1 mg/kg
Al: ≤1 mg/kg
As: ≤0.5 mg/kg
Ba: ≤1 mg/kg
Bi: ≤1 mg/kg
Ca: ≤10 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤10 mg/kg
K: ≤5 mg/kg
Li: ≤1 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Mo: ≤1 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sb: ≤2 mg/kg
Sr: ≤1 mg/kg
Tl: ≤1 mg/kg
Zn: ≤1 mg/kg

SMILES string

OP(O)(O)=O

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: ≤0.05
λ: 280 nm Amax: ≤0.04

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

Phosphoric acid has been used in the preparation of anolyte, a constituent of the capillary isoelectric focusing (CIEF) solutions. It has also been used as a chemical oxidation reagent in flow injection analysis-chemical oxidation-isotope ratio mass spectrometry (FIA-CO-IRMS).

Other Notes

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

Caution

product may become solid; becomes liquid on heating to 50°C.

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

Development and characterisation of new glycine certified reference materials for SI-traceable 13 C/12 C isotope amount ratio measurements
Malinovsky D, et al.
Journal of Analytical Atomic Spectrometry, 34(1), 147-159 (2019)
Qualification of NISTmAb charge heterogeneity control assays
Turner A and Schiel JE
Analytical and Bioanalytical Chemistry, 410(8), 2079-2093 (2018)
Taro Kishi et al.
Neuropharmacology, 58(7), 1168-1173 (2010-02-25)
Several investigations have suggested the possible involvement of sigma 1 non-opioid intracellular receptor 1 (sigma 1 receptor) in the pathophysiology of major depressive disorder (MDD). Sigma 1 receptors are also one of the major pharmacological therapeutic targets of selective serotonin
W M Fennis et al.
Journal of dental research, 93(1), 36-41 (2013-10-25)
The objective of this randomized control trial was to compare the five-year clinical performance of direct and indirect resin composite restorations replacing cusps. In 157 patients, 176 restorations were made to restore maxillary premolars with Class II cavities and one
Li Yan Chan et al.
The Journal of organic chemistry, 78(17), 8826-8832 (2013-08-07)
A simple and efficient method is developed for Pd-catalyzed ortho-acetoxylation using organophosphates, namely, benzylic phosphonic and aryl phosphoric monoacids, as the directing group.

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