Zinc oxide

grade

ACS reagent

Quality Level

300

Agency

reag. Ph. Eur.

product line

EMSURE^®

Assay

≥99.0% (complexometric)
99.0-100.5% ZnO basis (complexometric)

form

solid

potency

>5000 mg/kg LD₅₀ oral (Rat)

impurities

≤0.001% Substances reducing potassium permanganate (as O)
≤0.01% Substances insoluble in diluted sulfuric acid

loss

≤1.0% loss on ignition 500 °C

pH

7 (20 °C 50 g/L in H₂O slurry)

mp

1975 °C

solubility

insoluble 0.0016 g/L

density

5.61 g/cm³ at 20 °C

bulk density

200‑700 kg/m³

anion traces

chloride (Cl^–): ≤0.001%
nitrate (NO₃^–): ≤0.003%
sulfur compounds (as SO₄^2-): ≤0.01%

cation traces

As: ≤0.0001%
Ca: ≤0.001%
Cd: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.01%
Mg: ≤0.005%
Mn: ≤0.0005%
N: ≤0.0005%
Na: ≤0.001%
Pb: ≤0.002%
excess alkali: passes test

storage temp.

2-30°C

InChI

1S/O.Zn

InChI key

XLOMVQKBTHCTTD-UHFFFAOYSA-N