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Potassium Polysulfide K2Sx [CAS: 37199-66-9 ] - 100g

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Description

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

GHS Hazard Statements

H251 (44.3%): Self-heating; may catch fire [Danger Self-heating substances and mixtures]

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H400 (100%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]

Precautionary Statement Codes

P235, P260, P264, P273, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P391, P405, P407, P410, P413, P420, and P501

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

Safety

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