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79617

Sigma-Aldrich

Phosphoric acid

BioUltra, ≥85% (T)

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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

vapor density

3.4 (vs air)

Quality Level

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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1 of 4

This Item
30417P5811PX0996
vibrant-m

79617

Phosphoric acid

Premium Grade
vibrant-m

30417

Phosphoric acid

Essential Grade
vibrant-m

P5811

Phosphoric acid

Essential+ Grade
vibrant-m

PX0996

o-Phosphoric Acid 85% HPLC

-
Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

200

form

viscous liquid

form

liquid

form

liquid

form

viscous liquid

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

-

solubility

-

solubility

-

cation traces

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

cation traces

-

cation traces

-

impurities

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

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)

impurities

-

impurities

≤0.001% Heavy metals (as Pb), ≤0.001% Insoluble matter, ≤0.001% Sulfate (SO4), ≤0.001% Volatile acids (as acetic acid), ≤0.002% Antimony (Sb), ≤0.002% Calcium (Ca), ≤0.002% Magnesium (Mg), ≤0.003% Iron (Fe), ≤0.005% Potassium (K), ≤0.025% Sodium (Na), ≤0.5 ppm Arsenic (As), ≤0.5 ppm Manganese (Mn), ≤3 ppm Chloride (Cl), ≤5 ppm Nitrate (NO3)

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

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