Potassium nitrate
SIGALD/31263 - puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99%
CAS Number: 7757-79-1
Empirical Formula (Hill Notation): KNO3
Molecular Weight: 101.10
EC Number: 231-818-8
MDL Number: MFCD00011409
Linear Formula: KNO3
Product Type: Chemical
| agency | reag. ISO |
| reag. Ph. Eur. | |
| USP/NF | |
| anion traces | 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 | |
| assay | ≥99% |
| cation traces | Ca: ≤10 mg/kg |
| Cu: ≤5 mg/kg | |
| Fe: ≤2 mg/kg | |
| heavy metals: ≤5 ppm (by ICP-OES) | |
| Mg: ≤20 mg/kg | |
| Na: ≤50 mg/kg | |
| Pb: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | crystalline |
| grade | ACS reagent |
| puriss. p.a. | |
| impurities | ≤0.001% ammonium (NH4) |
| ≤0.005% water insolubles | |
| InChI | 1S/K.NO3/c;2-1(3)4/q+1;-1 |
| InChI key | FGIUAXJPYTZDNR-UHFFFAOYSA |
| mp | 334 °C (lit.) |
| pH | 5.5-7.5 (20 °C, 5%) |
| Quality Level | 200  |
| SMILES string | [K+].[O-][N+]([O-])=O |
| 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. |
| General description: | 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. |
| Symbol |  GHS03 |
| Signal word | Warning |
| Hazard statements | H272 |
| Precautionary statements | P210 |
| Hazard Codes | O |
| Risk Statements | 8 |
| RIDADR | UN 1486 5.1 / PGIII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99% |
| mp | 334 °C (lit.) |
| UNSPSC | 12352300 |