12648

Nitrate de potassium

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

• 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 : 329749787
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: puriss.; meets analytical specification of Ph Eur, BP, USP, FCC, E252
• Essai: 99.0-100.5%
• Forme: powder or crystals
• Impuretés: acidity or alkalinity, complies; reducing matter, complies; residual solvents, complies; ≤0.001% heavy metals (as Pb); ≤0.005% ammonium (NH₄)
• Perte: ≤0.5% loss on drying, 105 °C
• pH: 5-8 (20 °C, 5%)
• Pf: 334 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤10 mg/kg; nitrite (NO₂^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• Traces de cations: 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
• Adéquation: complies for appearance of solution
• 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 is colorless potassium salt having rhombic crystals. It is an oxidizing agent. In nature it is found as saltpeter. It can be prepared by reacting potassium carbonate/ hydroxide with nitric acid or by the reaction of sodium nitrate with potassium chloride.1 It can be prepared by combining ammonium nitrate and potassium hydroxide under hot conditions.
Potassium nitrate can find applications as an oxidizer, which can be prepared by combining ammonium nitrate and potassium hydroxide under hot conditions.

Application

Potassium nitrate may be employed for the following studies:

• Preparation of gun powder, ceramics, glass, dyeing and printing.1
• As oxidizing agent in the fireworks.1
• Preparation of potassium nitrite.1
• As desensitizing agent for tooth hypersensitivity.
• As phase change material for the preparation of nanofluids with phase change behavior.

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