Merck ortho-Phosphoric acid

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

Grade:   ACS reagent

Quality Level:   300

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

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.)

storage temp.:  no temp limit

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

General description

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

Other Notes

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

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

Legal Information

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