Potassium nitrate
CAS Number7757-79-1
FormulaKNO3
Mol. Weight101.10 g/mol
Potassium nitrate
What is Potassium nitrate?
Potassium nitrate is a chemical compound with CAS number 7757-79-1 and molecular formula KNO3. It is used in various industrial and research applications.
Specifications
Molecular Weight
101.10 g/mol
Grade
JIS special grade
Assay/Purity
≥99.0%
Impurities
acidity or alkalinity, complies
reducing matter, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.005% ammonium (NH4)
Solubility
H2O: soluble1 M at 20 °C, clear, colorless
Safety Information
GHS03Signal Word
Warning
Hazard Statements
H272
Precautionary Statements
P220
Required PPE
Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Melting Point
334 °C(lit.)
Anion Traces
chloride (Cl-): ≤10 mg/kg
nitrite (NO2-): ≤5 mg/kg
sulfate (SO42-): ≤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
EC Number
231-818-8
WGK Germany
1