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Merck

1.00573

ortho-Phosphoric acid

greener alternative

85%, for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Synonym(s):

Phosphoric acid, o-Phosphoric acid, Orthophosphoric acid, Orthophosphoric acid

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About This Item

Linear Formula:
H3PO4
CAS Number:
7664-38-2
Molecular Weight:
98.00
NACRES:
NA.21
UNSPSC Code:
12352301
MDL number:
MFCD00011340
Beilstein/REAXYS Number:
1921286

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Product Name

ortho-Phosphoric acid 85%, for analysis EMSURE® ACS,ISO,Reag. Ph Eur

InChI

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

SMILES string

OP(O)(O)=O

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N

grade

ACS reagent

agency

reag. ISO
reag. Ph. Eur.

vapor density

3.4 (vs air)

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

product line

EMSURE®

form

liquid

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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concentration

85% phosphoric acid

impurities

≤0.5 ppm As (Arsenic)
≤0.5 ppm Cd (Cadmium)
≤0.5 ppm Co (Cobalt)
≤0.5 ppm Cu (Copper)
≤0.5 ppm Mn (Manganese)
≤0.5 ppm Pb (Lead)
≤1 ppm Fluoride (F)
≤1.0 ppm Ni (Nickel)
≤10 ppm Fe (Iron)
≤10 ppm Heavy metals (as Pb)
≤10 ppm Insoluble matter
≤10 ppm Substances reducing potassium permanganate (as O)
≤10 ppm Volatile acids (as Acetic acid)
≤2 ppm Chloride (Cl)
≤2 ppm Zn (Zinc)
≤20 ppm Ca (Calcium)
≤20 ppm Phosphite and Hypophosphite (as H3PO3)
≤20 ppm Sulfate (SO4)
≤200 ppm Na (Sodium)
≤3 ppm Nitrate (NO3)
≤5 ppm K (Potassium)
≤5 ppm Mg (Magnesium)
≤5 ppm Sb (Antimony)

color

APHA: ≤10

pH

<0.5 (20 °C, 100 g/L in H2O)

kinematic viscosity

30.5 cSt(20 °C)

bp

158 °C (lit.)

mp

~40 °C (lit.)

density

1.685 g/mL at 25 °C (lit.)

greener alternative category

Enabling

storage temp.

no temp limit

Quality Level

300

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Analysis Note

Assay (alkalimetric)≥ 85.0 %Identitypasses testAppearance of solutionpasses testColor≤ 10 HazenChloride (Cl)≤ 2 ppmFluoride (F)≤ 1 ppmNitrate (NO₃)≤ 3 ppmPhosphite and Hypophosphite (as H₃PO₃)≤ 20 ppmHypophosphite, phosphitepasses testHeavy metals (as Pb)≤ 10 ppmSulfate (SO₄)≤ 20 ppmAs (Arsenic)≤ 0.5 ppmCa (Calcium)≤ 20 ppmCd (Cadmium)≤ 0.5 ppmCo (Cobalt)≤ 0.5 ppmCu (Copper)≤ 0.5 ppmFe (Iron)≤ 10 ppmK (Potassium)≤ 5 ppmMg (Magnesium)≤ 5 ppmMn (Manganese)≤ 0.5 ppmNa (Sodium)≤ 200 ppmNi (Nickel)≤ 1.0 ppmPb (Lead)≤ 0.5 ppmSb (Antimony)≤ 5 ppmZn (Zinc)≤ 2 ppmMatter precipitated by ammoniapasses testVolatile acids (as Acetic acid)≤ 10 ppmSubstances reducing potassium permanganate (as O)≤ 10 ppmInsoluble matter≤ 10 ppm

General description

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for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Other Notes

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

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Application

ortho-Phosphoric acid can be used as a:
  • Reactant in the synthesis of polyurethane ionomer films through etherification with polyoxypropylene glycol in the presence of tertiary amines.
  • Catalyst in pinacolic rearrangement reactions when it is supported on silica.
  • Phosphorus source in the synthesis of diaryl phosphates.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

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

Storage Class

8B - Non-combustible, corrosive hazardous materials

wgk

WGK 1

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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