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Potassium nitrate ≥99.0%, crystals ACS

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Oxidizing
Potassium nitrate ≥99.0%, crystals ACS
Supplier:  VWR
CertificatesPotassium nitrate ≥99.0%, crystals ACS

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Potassium Nitrate is used as an oxidizing agent during fire assay and precious metal refining

Synonyms:  Nitrate of Potash
  • CAS Number:7757-79-1
  • Formula:KNO₃
  • MDL Number:MFCD00011409
  • Molecular Weight:101.1 g/mol
  • Merck Index:13,07733
  • Melting Pt:334 °C
  • Density:2.109 g/cm³ (20 °C)
  • Storage Temperature:Ambient
  • EINECS:231-818-8
  • UN:1486
  • ADR:5.1,III
  • REACH:01-2119488224-35

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Specification Test Results

  • Assay (KNO3):
    99.0% min.
  • pH of a 5% Solution at 25°C:
    4.5 - 8.5
  • Insoluble Matter:
    0.005% max.
  • Chloride (Cl):
    0.002% max.
  • Iodate (IO3):
    5 ppm max.
  • Nitrite (NO2):
    0.001% max.
  • Phosphate (PO4):
    5 ppm max.
  • Sulfate (SO4):
    0.003% max.
  • Heavy metals (as Pb):
    5 ppm max.
  • Iron (Fe):
    3 ppm max.
  • Calcium (Ca):
    0.005% max.
  • Magnesium (Mg):
    0.002% max.
  • Sodium (Na):
    0.005% max.
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