31263

Nitrate de potassium

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99%

• Formule empirique (notation de Hill) : KNO₃
• CAS Number: 7757-79-1
• Poids moléculaire : 101.10
• Numéro CE : 231-818-8
• Numéro MDL: MFCD00011409
• Code UNSPSC : 12352302
• ID de substance PubChem : 329753710
• Nomenclature NACRES : NB.24

Propriétés

• Qualité: ACS reagent; puriss. p.a.
• Agence: USP/NF; reag. ISO; reag. Ph. Eur.
• Essai: ≥99%
• Forme: crystalline
• Impuretés: ≤0.001% ammonium (NH₄); ≤0.005% water insolubles
• pH: 5.5-7.5 (20 °C, 5%)
• Pf: 334 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤10 mg/kg; iodate (IO₃^-): ≤5 mg/kg; nitrite (NO₂^-): ≤10 mg/kg; phosphate (PO₄^3-): ≤5 mg/kg; sulfate (SO₄^2-): ≤20 mg/kg
• Traces de cations: Ca: ≤10 mg/kg; Cu: ≤5 mg/kg; Fe: ≤2 mg/kg; Mg: ≤20 mg/kg; Na: ≤50 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg; heavy metals: ≤5 ppm (by ICP-OES)
• Chaîne SMILES: [K+].[O-][N+]([O-])=O
• InChI: 1S/K.NO3/c;2-1(3)4/q+1;-1
• Clé InChI: FGIUAXJPYTZDNR-UHFFFAOYSA-N

Description

Description générale

Potassium nitrate (KNO₃) is a water-soluble inorganic salt that is commonly used as a source of nitrate ions. It is also used as a cocatalyst in various organic transformations.

Application

Potassium nitrate can be used in the following:      

• KNO₃/Al₂O₃ is used as a base heterogeneous catalyst in the production of biodiesel via transesterification reaction. 
• KNO₃/Br₂ catalytic system is used for the aerobic oxidations of sulfides and alcohols.

Informations sur la sécurité

• Pictogrammes: GHS03
• Mention d'avertissement: Warning
• Mentions de danger: H272
• Conseils de prudence: P210 - P220 - P280 - P370 + P378 - P501
• Classification des risques: Ox. Sol. 3
• Code de la classe de stockage: 5.1B - Oxidizing hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable