Home › Chemicals › Potassium Permanganate CAS 7722-64-7: Potassium Permanganate (KMnO4) Identity CAS Number 7722-64-7 Molecular Formula KMnO4 IUPAC Name potassium manganate(VII) Molecular Weight 158.03 g/mol SMILES [K+].[O-][Mn](=O)(=O)=OSynonyms permanganate of potash, Condy's crystals, KMnO4
2D Structure
Physical Properties Density 2.703 g/mL at 25°C Boiling Point None°C Melting Point 240.0°C Flash Point None°C Vapor Pressure 0.0 kPa at 20°C Refractive Index nD = 1.592 Dielectric Constant ε = 7.0
Safety & GHS Classification GHS03 GHS05 Irritant GHS09
H272: May intensify fire; oxidizer H302: Harmful if swallowed H314: Causes severe skin burns and eye damage H335: May cause respiratory irritation H410: Very toxic to aquatic life with long lasting effects Storage: Store in tightly sealed dark containers away from organic materials. Strong oxidizer — contact with organic materials can cause fire. Keep away from acids (produces explosive Mn2O7). Never mix with glycerol (risk of spontaneous combustion).
Material Compatibility Matrix Plastics Material Rating PTFE Excellent PVC Good PE Good PP Good PEEK Good PVDF Good
Rubbers Material Rating Viton Good NBR Fair EPDM Good Silicone Good FKM Good
Metals Material Rating Stainless 316 Good Aluminum Poor Copper Poor Brass Poor
Applications Water treatment (iron and manganese removal) Disinfectant and deodorizer Organic synthesis oxidizing agent Analytical chemistry (redox titrations) Sewage treatment Fish disease treatment (aquaculture) Survival fire starter (with glycerol) Wound disinfectant (dilute solution) External References: PubChem
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