Potassium nitrate, 99.994% (metals basis)

Description

CAS: 7757-79-1 | KNO3 | 101.10 g/mol

Potassium nitrate has several applications. It is used as an oxidizer, food preservative, fertilizer, and an active ingredient of condensed aerosol fire suppression systems. It is a powerful nitrating agent in sulfuric acid medium. In addition, it also used as an electrolyte in a salt bridge and thermal storage medium in power generation systems. Ternary salts containing potassium nitrate have been reported to improve the heat storage capacity in the molten salts.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications

Chemical Identifiers

• CAS: 7757-79-1
• Molecular Formula: KNO3
• Molecular Weight (g/mol): 101.10
• MDL Number: MFCD00011409
• InChI Key: FGIUAXJPYTZDNR-UHFFFAOYSA-N
• Synonym: potassium nitrate, saltpeter, nitre, nitrate of potash, vicknite, nitric acid potassium salt, nitric acid, potassium salt, saltpetre, kaliumnitrat, kalii nitras
• PubChem CID: 24434
• ChEBI: CHEBI:63043
• SMILES: [K+].[O-][N+]([O-])=O

• Boiling Point: 400°C (decomposition)
• Melting Point: 334°C
• Color: White
• Physical Form: Crystalline
• Quantity: 25 g
• UN Number: UN1486
• Merck Index: 14,7648
• Solubility Information: Freely soluble in water. Slightly soluble in ethanol.
• IUPAC Name: potassium;nitrate
• Formula Weight: 101.11
• Percent Purity: 99.994%
• Odor: Odorless
• Sensitivity: Hygroscopic
• Density: 2.109 g/mL
• Assay: (metals basis)
• Chemical Name or Material: Potassium nitrate

Safety and Handling

Hazard Category	H272
Hazard Statement	GHS H Statement H272 May intensify fire oxidizer.
Precautionary Statement	P210-P220-P221-P280-P370+P378q-P501c
DOTInformation	Transport Hazard Class: 5.1; Packing Group: III; Proper Shipping Name: POTASSIUM NITRATE
EINECSNumber	231-818-8
RTECSNumber	TT3700000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only