ortho-Phosphoric acid

Name: ortho-Phosphoric acid
Brand: MM

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

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

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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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Chemistry & Biochemicals

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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

GHS05,GHS07

signalword

Danger

hcodes

H290 - H302 - H314

pcodes

P234 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338

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)

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