CAS 7757-79-1: Potassium Nitrate (KNO3)

Identity

CAS Number7757-79-1
Molecular FormulaKNO3
IUPAC Namepotassium nitrate
Molecular Weight101.1 g/mol
SMILES[K+].[O-]N(=O)=O
Synonymssaltpeter, niter, KNO3, potash nitrate

2D Structure

Physical Properties

Density2.109 g/mL at 25°C
Boiling Point400.0°C
Melting Point334.0°C
Flash PointNone°C
Vapor Pressure0.0 kPa at 20°C
Refractive IndexnD = 1.506
Dielectric Constantε = 5.0

Safety & GHS Classification

GHS03Irritant

Storage: Store in cool, dry place away from combustible materials. Strong oxidizer. Do not mix with organic materials or reducing agents. Keep away from acids.

Material Compatibility Matrix

Plastics

MaterialRating
PTFEExcellent
PVCGood
PEGood
PPGood
PEEKGood
PVDFGood

Rubbers

MaterialRating
VitonGood
NBRFair
EPDMGood
SiliconeGood
FKMGood

Metals

MaterialRating
Stainless 316Good
AluminumPoor
CopperPoor
BrassPoor

Applications

External References: PubChem

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