Tetrakis(Hydroxymethyl)Phosphonium Sulfate (THPS)

A low-toxicity, low-residue, readily biodegradable phosphonium biocide that also functions as a flame retardant.

Technical Data

Key Properties

• Low toxicity and low residue; good environmental compatibility
• Low freezing point and excellent low-temperature stability
• Readily soluble in water; long storage life
• Dual function: biocide and flame retardant
• Synergistic with quaternaries and glutaraldehyde in blended programmes

Applications

• Oilfield injection water and drilling fluid treatment (SRB control)
• Biocide in industrial cooling water and paper machine white water
• Durable flame-retardant finishing of cotton and polyester-cotton fabrics
• Leather tanning and wood preservation

Packaging & Storage

Packaging: 200 L drum or 1000 L IBC; ISO tank containers on request.

Storage: Store in a cool, ventilated warehouse away from ignition sources, oxidizers and acids. Two years shelf life unopened.

Handling & Safety

Acidic and corrosive. Transport class 8, UN 2922, packing group III. Wear protective equipment.