Potassium nitrate
SIGALD/12648 - puriss., meets analytical specification of Ph Eur, BP, USP, FCC, E252, 99.0-100.5%
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
| anion traces | chloride (Cl-): ≤10 mg/kg |
| nitrite (NO2-): ≤5 mg/kg | |
| sulfate (SO42-): ≤100 mg/kg | |
| assay | 99.0-100.5% |
| cation traces | 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 | |
| form | powder or crystals |
| grade | puriss. |
| impurities | acidity or alkalinity, complies |
| reducing matter, complies | |
| residual solvents, complies | |
| ≤0.001% heavy metals (as Pb) | |
| ≤0.005% ammonium (NH4) | |
| InChI | 1S/K.NO3/c;2-1(3)4/q+1;-1 |
| InChI key | FGIUAXJPYTZDNR-UHFFFAOYSA |
| loss | ≤0.5% loss on drying, 105 °C |
| mp | 334 °C (lit.) |
| pH | 5-8 (20 °C, 5%) |
| quality | meets analytical specification of Ph Eur, BP, USP, FCC, E252 |
| Quality Level | 100  |
| SMILES string | [K+].[O-][N+]([O-])=O |
| suitability | complies for appearance of solution |
| 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. |
| General description: | 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. |
| 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 | 99.0-100.5% |
| mp | 334 °C (lit.) |
| UNSPSC | 12352300 |