Potassium amylxanthate is a widely used flotation collector for sulfide minerals, especially copper, lead, zinc, and gold ores. It selectively adsorbs onto mineral surfaces, rendering them hydrophobic and enabling separation from gangue via froth flotation. In metallurgy, it acts as a reducing agent for metal ions, such as Cu2?, facilitating precipitation and purification. In organic synthesis, it serves as a sulfur transfer reagent and catalyst for imidization, thiation, and heterocyclic synthesis, promoting C–S bond formation under mild conditions. It is also used in wastewater treatment to precipitate heavy metals and in rubber chemistry as a vulcanization accelerator. Its low cost and high efficiency make it a staple in mineral processing and industrial chemistry.

GHS Classification: H302 (Harmful if swallowed), H315 (Causes skin irritation), H319 (Causes serious eye irritation), H335 (May cause respiratory irritation). Acute toxicity: Oral LD50 (rat) >500 mg/kg; dermal LD50 >2000 mg/kg. Skin contact may cause redness, itching, or dermatitis; eye contact can lead to severe irritation and corneal damage. Inhalation of dust irritates the nose, throat, and lungs, causing coughing or shortness of breath. No evidence of carcinogenicity or mutagenicity. Environmental hazard: Toxic to aquatic organisms; avoid discharge into waterways. Handle in a ventilated area with nitrile gloves, safety goggles, and a dust mask. Store sealed in a cool, dry place, away from acids, oxidants, and moisture. Spills should be swept up and disposed of as hazardous waste; neutralize acid spills with sodium bicarbonate.