Polisiarczek potasu K2Sx [CAS: 37199-66-9] - 1000g

Potassium Polysulfide

Other Names: Dipotassium polysulfide, K₂Sₓ
CAS Number: 37199-66-9
Molecular Formula: K₂Sₓ (x = 2 to 6, commonly 4 or 5)
Molar Mass: Variable (depends on x; approx. 182–246 g/mol for typical compositions)
Appearance: Yellow to red crystalline or amorphous solid
Odor: Characteristic sulfur-like odor

Chemical and Physical Properties

• Solubility: Soluble in water; forms strongly alkaline and reactive solutions

• Stability: Sensitive to moisture and air; decomposes in acidic conditions, releasing toxic hydrogen sulfide (H₂S)

• pH: Strongly basic in solution

• Density: Approx. 2.0 g/cm³ (varies)

• Melting Point: Decomposes before melting

Applications

• Chemical Synthesis: Used in inorganic and organosulfur synthesis

• Flotation Reagents: Acts as a sulfurizing agent in mineral flotation processes

• Corrosion Inhibitors: Component in formulations used to prevent corrosion in industrial systems

• Battery and Energy Research: Investigated in polysulfide redox chemistry and flow batteries

• Glass and Pigment Industry: Source of sulfur in glass coloring and dyeing applications

Safety Information

Signal Word: ⚠️ Warning

Handling and Storage

• Handling: Use only in well-ventilated areas with appropriate protective equipment. Avoid contact with acids due to H₂S formation

• Storage: Store in tightly closed containers in a dry, cool, well-ventilated place. Keep away from acids, oxidizers, and moisture