硝酸钾

产品名称

硝酸钾, puriss., meets analytical specification of Ph Eur, BP, USP, FCC, E252, 99.0-100.5%

InChI key

FGIUAXJPYTZDNR-UHFFFAOYSA-N

InChI

1S/K.NO3/c;2-1(3)4/q+1;-1

SMILES string

[K+].[O-][N+]([O-])=O

grade

puriss.

assay

99.0-100.5%

form

powder or crystals

quality

meets analytical specification of Ph Eur, BP, USP, FCC, E252

impurities

acidity or alkalinity, complies
reducing matter, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.005% ammonium (NH₄)

loss

≤0.5% loss on drying, 105 °C

pH

5-8 (20 °C, 5%)

mp

334 °C (lit.)

anion traces

chloride (Cl^-): ≤10 mg/kg
nitrite (NO₂^-): ≤5 mg/kg
sulfate (SO₄^2-): ≤100 mg/kg

cation traces

As: ≤1 mg/kg
Ca: ≤50 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Na: ≤1000 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

suitability

complies for appearance of solution

Quality Level

100