Tetrakis(hydroxymethyl) Phosphonium Chloride (THPC) CAS 124-64-1
Tetrakis(hydroxymethyl)phosphonium Chloride is a versatile organophosphorus compound widely used as an environmentally friendly, broad-spectrum biocide and a durable flame-retardant agent. Featuring high water solubility, rapid biodegradability, and low environmental persistence, THPC is extensively utilized in oilfield water injection, industrial circulating cooling systems, paper manufacturing, and heavy-duty textile flame-retardant finishing.
- Broad-Spectrum & Eco-Friendly Biocide: Highly effective against Sulfate-Reducing Bacteria (SRB), Slime-Forming Bacteria (SFB), and algae in oilfield reservoirs and industrial cooling towers. It breaks down rapidly into non-toxic residues, minimizing bioaccumulation risk.
- Durable Flame Retardancy for Textiles: Functions as the core precursor for the Proban textile finishing process. Crosslinks with ammonia or urea within cotton fibers to provide wash-durable, soft-touch flame resistance without compromising fabric tensile strength.
- Versatile Chemical Intermediary: Serves as an active catalyst in aldehyde condensation reactions and as an intermediate in the synthesis of specialized organophosphorus flame-retardant polymers.
Tetrakis(Hydroxymethyl) Phosphonium Chloride Description
Name: Tetrakis(hydroxymethyl) Phosphonium Chloride ( THPC)
Synonyms: Tetrahydroxymethylphosphonium chloride / Tetramethylolphosphonium chloride
Molecular Formula: C4H12ClO4P
Molecular Weight: 190.56
CAS NO.: 124-64-1
Density: 1.320 to 1.360 g/ml
Appearance: Colorless transparent liquid
Properties: Transparent liquid, hygroscopic, easily soluble in water. Has a pungent odor, is acidic, and corrosive.
Preparation: Add a certain amount of yellow phosphorus, zinc powder, and formaldehyde to a reactor. Under nitrogen protection, add a certain amount of concentrated hydrochloric acid dropwise. Then, heat the reactants to 80°C and continue to add concentrated hydrochloric acid dropwise at this temperature. After 6 hours of reaction, the reaction mixture is concentrated under reduced pressure, the precipitated salt is discarded, and further dehydrated under reduced pressure to obtain the product.
Packages: 250 KG per plastic drum, 1400 KG per IBC tank.
Storage: Store in a cool, dry place in a sealed container. Avoid moisture and humidity. Keep away from oxidizing agents, reducing agents, and strong alkalis.
Safety protection: It is irritating and should not come into direct contact with the skin. In addition to wearing a mask and goggles during operation, the production workshop must have good ventilation.
Hot tags: Tolcide THPC; Retardol C; Pyroset TKC; Proban CC
THPC Technical
| Items | Index |
| Appearance | Colorless transparent liquid |
| Purity(%) | ≥80 |
| Iron (Fe)% | ≤0.0015 |
| PH | 3.0-5.0 |
As a certified Tetrakis(hydroxymethyl) Phosphonium Chloride & THPC factory, we adhere to strict quality protocols, with every batch undergoing rigorous testing to ensure consistent efficacy and safety.
Tetramethylolphosphonium chloride Applications
- Oil & Gas Field Water Treatment: Injected into oil reservoirs and pipelines to eradicate SRB bacteria, control hydrogen sulfide (H2S) biogenic generation, and prevent microbial induced corrosion (MIC).
- Textile Flame-Retardant Finishing: Essential chemical agent for fire-retardant protective wear, military uniforms, and industrial safety textiles.
- Pulp & Paper Processing: Acts as a slimicide in paper mill water loops, suppressing microbiological slime formation and improving paper sheet quality.
- Industrial Cooling Systems: Prevents bio-fouling and algal blooms in open and closed circulating cooling water networks.
Sinochem Middle East Corporation supplies industrial-grade THPC (80% aqueous solution) with stringent quality management (ISO 9001 certified). We provide comprehensive technical support, custom blending, SDS documentation, and REACH compliance services for global buyers. Contact our chemical engineering team today for pricing and lab samples.
