![THPS 75%; Tetrakis(Hydroxymethyl)Phosphonium Sulfate 75%; [(HOCH₂)₄P]₂SO₄, CAS 55566-30-8; pale yellow aqueous solution](https://sourcingpros.in/wp-content/uploads/2026/08/tetrakis-hydroxymethyl-phosphonium-sulfate-75_-pale-yellow-liquid-768x960.webp)
THPS 75%
THPS 75% is a broad-spectrum biocide used for microbial control in water treatment and oilfields.
- Oil & Gas
- Water Treatment
- Leather
![THPS 25%, Tetrakis(Hydroxymethyl)Phosphonium Sulfate 25%; [(HOCH₂)₄P]₂SO₄, CAS 55566-30-8; Clear aqueous solution](https://sourcingpros.in/wp-content/uploads/2026/08/tetrakis-hydroxymethyl-phosphonium-sulfate-25_-pale-yellow-liquid-819x1024.webp)
![THPS 25%, Tetrakis(Hydroxymethyl)Phosphonium Sulfate 25%; [(HOCH₂)₄P]₂SO₄ chemical structure, CAS 55566-30-8](https://sourcingpros.in/wp-content/uploads/2026/08/tetrakis-hydroxymethyl-phosphonium-sulfate-25_-chemical-structure.webp)
THPS 25% (Tetrakis Hydroxymethyl Phosphonium Sulfate, CAS 55566-30-8) is a diluted aqueous solution of a highly effective phosphonium-based biocide, supplied as a clear to pale yellow liquid with excellent water solubility. It is widely used to control bacteria, algae, and sulfate-reducing microorganisms in industrial water systems, oilfield operations, and process industries. Common applications include cooling water treatment, wastewater management, and pulp and paper processing, where efficient microbial control is essential. Valued for its broad-spectrum antimicrobial activity, ease of handling, and environmental compatibility, THPS 25% delivers reliable performance across diverse industrial applications.
| Property | Specification |
|---|---|
| Product Name | THPS 25% |
| CAS No | 55566-30-8 |
| Chemical Name/Synonyms | Tetrakis(Hydroxymethyl)Phosphonium Sulfate 25%; THPS 25% Dilute |
| Chemical Formula | [(HOCH₂)₄P]₂SO₄ |
| Appearance (Color) | Clear aqueous solution |
| Molecular Weight | 406.26 g/mol |
| HS Code | 2931.49 |
| TSCA Inventory | Active |
More identifiers
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Effectively eliminates a broad spectrum of bacteria, fungi, and algae.
Penetrates and breaks down complex biofilms in cooling systems and pipes.
Provides extended shelf-life protection for aqueous product formulations.
Prevents microbially induced corrosion (MIC) and maintains heat transfer efficiency.
Maintains biocidal efficacy across a wide range of industrial pH conditions.
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