12648

Potassium nitrate

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

• Fórmula empírica (notación de Hill): KNO₃
• Número de CAS: 7757-79-1
• Peso molecular: 101.10
• Número CE: 231-818-8
• Número MDL: MFCD00011409
• Código UNSPSC: 12352302
• ID de la sustancia en PubChem: 329749787
• NACRES: NA.21

Propiedades

• grado: puriss.
• Ensayo: 99.0-100.5%
• Formulario: powder or crystals
• calidad: meets analytical specification of Ph Eur, BP, USP, FCC, E252
• impurezas: acidity or alkalinity, complies; reducing matter, complies; residual solvents, complies; ≤0.001% heavy metals (as Pb); ≤0.005% ammonium (NH₄)
• pérdida: ≤0.5% loss on drying, 105 °C
• pH: 5-8 (20 °C, 5%)
• mp: 334 °C (lit.)
• trazas de anión: chloride (Cl^-): ≤10 mg/kg; nitrite (NO₂^-): ≤5 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• trazas de catión: 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
• idoneidad: complies for appearance of solution
• cadena SMILES: [K+].[O-][N+]([O-])=O
• InChI: 1S/K.NO3/c;2-1(3)4/q+1;-1
• Clave InChI: FGIUAXJPYTZDNR-UHFFFAOYSA-N

Descripción

Descripción general

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.[1]

Aplicación

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.[2]
• As phase change material for the preparation of nanofluids with phase change behavior.[3]

Información de seguridad

• Pictogramas: GHS03
• Palabra de señalización: Warning
• Frases de peligro: H272
• Consejos de prudencia: P210 - P220 - P280 - P370 + P378 - P501
• Clasificaciones de peligro: Ox. Sol. 3
• Código de clase de almacenamiento: 5.1B - Oxidizing hazardous materials
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable