Tetrakisphosphonium sulfate
Tetrakis(hydroxymethyl)phosphonium sulfate (CAS 55566-30-8), commonly known as THPS, is a powerful organophosphorus biocide and industrial chemical agent. Appearing as a clear, colorless-to-straw-colored aqueous solution, THPS is renowned for its rapid, broad-spectrum antimicrobial activity against sulfate-reducing bacteria, algae, and fungi. It operates by penetrating bacterial cell walls and denaturing essential cellular proteins and enzymes. A major environmental advantage of THPS is its favorable ecotoxicological profile; it degrades rapidly in natural environments into low-toxicity end products, significantly reducing persistent aquatic hazard risks. Beyond microbial control, THPS is a versatile chemical that reacts readily with nucleophilic polymers, enabling its use in flame-retardant textile finishing and heavy metal complexation across diverse industrial processing sectors.
– Industrial Water & Oilfield Treatment: Widely used in recirculating cooling towers, paper manufacturing systems, and oilfield injection waters to control sulfate-reducing bacteria and biofouling.
– Durable Textile Flame Retardancy: Applied as a key chemical cross-linking agent in the durable flame-retardant treatment of cotton and cellulosic protective fabrics.
– Hides & Leather Processing: Utilized as an environmentally friendly, metal-free tanning agent in leather processing to achieve high thermal stability and soft grain feel.
Product Name: Tetrakisphosphonium sulfate
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