氢氧化铵 溶液

InChI

1S/H3N.H2O/h1H3;1H2

InChI key

VHUUQVKOLVNVRT-UHFFFAOYSA-N

agency

USP/NF, reag. ISO, reag. Ph. Eur.

description

related substances ≤ 2 ppm (as pyridine)

grade

puriss. p.a.

form

liquid

expl. lim.

27 %

concentration

~25% NH₃

impurities

readily oxidisable substances, in accordance, ≤0.0001% heavy metals (as Pb), ≤0.0005% KMnO₄ red. matter (as O), ≤0.0018% non-volatile matter

evapn. residue

≤0.0018%

pH

11.7 (20 °C)

density

0.892-0.910 g/mL at 20 °C

Quality Level

200

anion traces

carbonate (CO₃^2-): ≤60 ppm, carbonate (as CO₂): ≤10 ppm, chloride (Cl^-): ≤0.5 ppm, phosphate (PO₄^3-): ≤0.5 ppm, silicate (as SiO₂): ≤10 ppm, sulfate (SO₄^2-): ≤2 ppm, sulfide (S^2-): ≤0.2 ppm

cation traces

Ag: ≤0.02 ppm, Al: ≤0.5 ppm, Au: ≤0.1 ppm, Ba: ≤0.05 ppm, Bi: ≤0.1 ppm, Ca: ≤1 ppm, Cd: ≤0.05 ppm, Co: ≤0.05 ppm, Cr: ≤0.05 ppm, Cu: ≤0.1 ppm, Fe: ≤0.1 ppm, Ga: ≤0.02 ppm, In: ≤0.02 ppm, K: ≤0.5 ppm, Li: ≤0.02 ppm, Mg: ≤0.1 ppm, Mn: ≤0.05 ppm, Mo: ≤0.05 ppm, Na: ≤1 ppm, Ni: ≤0.05 ppm, Pb: ≤0.05 ppm, Pt: ≤0.1 ppm, Sn: ≤0.1 ppm, Sr: ≤0.2 ppm, Ti: ≤0.1 ppm, Tl: ≤0.05 ppm, Zn: ≤0.1 ppm

suitability

complies for appearance of solution

storage temp.

2-8°C