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31263

Sigma-Aldrich

Potassium nitrate

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

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About This Item

Formula empirica (notazione di Hill):
KNO3
Numero CAS:
Peso molecolare:
101.10
Numero CE:
Numero MDL:
Codice UNSPSC:
12352302
ID PubChem:
NACRES:
NB.24

Grado

ACS reagent
puriss. p.a.

Livello qualitativo

agenzia

USP/NF
reag. ISO
reag. Ph. Eur.

Saggio

≥99%

Stato

crystalline

Impurezze

≤0.001% ammonium (NH4)
≤0.005% water insolubles

pH

5.5-7.5 (20 °C, 5%)

Punto di fusione

334 °C (lit.)

Anioni in tracce

chloride (Cl-): ≤10 mg/kg
iodate (IO3-): ≤5 mg/kg
nitrite (NO2-): ≤10 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤20 mg/kg

Cationi in tracce

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)

Stringa SMILE

[K+].[O-][N+]([O-])=O

InChI

1S/K.NO3/c;2-1(3)4/q+1;-1
FGIUAXJPYTZDNR-UHFFFAOYSA-N

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Descrizione generale

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.

Applicazioni

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.

Pittogrammi

Flame over circle

Avvertenze

Warning

Indicazioni di pericolo

Classi di pericolo

Ox. Sol. 3

Codice della classe di stoccaggio

5.1B - Oxidizing hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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