THPC(Tetrakis(hydroxymethyl)phosphonium chloride)
An 80% aqueous solution used as a textile flame retardant, biocide for oilfields and water treatment, and leather tanning agent.
Tetrakis (hydroxymethyl) phosphonium chloride (THPC)
- CAS Number: 124-64-1
- Molecular Formula: C₄H₁₂ClO₄P
- Purity (%): 80% to 85%
- Appearance: Colorless to light yellow transparent liquid
- Package: 1250kg/ IBC drum.
- Other Name: Tetrahydroxymethylphosphonium chloride, Tetramethylolphosphonium chloride
Tetrakis(hydroxymethyl)phosphonium chloride Specification
| Items | Specifications |
| Active content THPC ( %) | 80.0 to 85.0 |
| Specific gravity (g/ml，25℃) | 1.320 to 1.360 |
| Iron (Fe) mg/kg | ≤10 |
| Viscosity 25℃ cps | ≤50 |
| PH | 3.0 to 5.0 |
THPC for Sale
THPC (Tetrakis(hydroxymethyl)phosphonium chloride) is a versatile industrial chemical supplied as an aqueous solution. It is widely used as a flame retardant for textiles and as an effective biocide in water treatment, oilfield operations, and leather processing. It is known for replacing older, more toxic biocides while delivering reliable performance.
High Purity & Consistent Quality: Our THPC is an 80% aqueous solution with strict quality control. Every batch is tested and comes with a Certificate of Analysis (CoA).
Excellent Thermal & Chemical Stability: Maintains effectiveness under demanding industrial conditions, ensuring reliable performance in high-temperature processes.
Low Dosage, High Efficiency: Active at very low concentrations (50–100 ppm), reducing chemical consumption and overall treatment costs.
Easy to Handle & Dose: Supplied as a clear, low-viscosity liquid. Pumps easily and blends quickly into water systems without special pre-mixing.
Safe & Compliant Shipping: Classified as UN 2922 (Class 8 corrosive). We provide full dangerous goods documentation and UN‑approved packaging for secure global delivery.
What is THPC Used for
Textile Flame Retardant: THPC is the core raw material for durable flame retardant finishes on cotton and blended fabrics (e.g., Proban process). It provides high flame resistance and good wash durability.
Industrial Biocide: Used in cooling water systems, oilfield injection water, and paper mills. Effectively kills bacteria and algae, and controls slime growth.
Metal Treatment & Material Synthesis: In research and chemical production, THPC acts as a reducing agent and stabilizing ligand for gold nanoparticles.
Leather & Polymer Modification: Works as a crosslinking agent with collagen for leather tanning. Also used to prepare biodegradable collagen films.
FAQ of Tetrakis(hydroxymethyl)phosphonium chloride
Class 8 (corrosive) with subsidiary risk Class 6.1 (toxic). UN number 2922, Packing Group III. We provide full dangerous goods documentation (MSDS, UN packaging certification and transport certificate).
It is easily biodegradable. It breaks down quickly in the environment, leaving no long-term residues. It is also formaldehyde-free, low VOC, and meets major eco-label standards.
The Asia-Pacific region leads the demand, especially China, India, Japan, and South Korea. North America (USA, Canada) and Europe (Germany, France, Italy, UK) are also major stable markets, followed by Middle-East & Africa.
Yes. We provide free samples for pre-order testing. Our team offers full technical support, including dosage recommendations, formula compatibility checks, and product selection advice.
This product is supplied in standard 1250kgs/ IBC drum.
Store THPC in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly sealed to prevent contamination.
THPC Supplier-HOO CHEMTEC
HOO CHEMTEC: Your Reliable THPC Partner
We are a direct manufacturer with an annual production capacity exceeding 13,500 metric tons of high‑purity THPC (80% -85% solution). This scale ensures stable supply, consistent quality, and competitive pricing for our global customers.
Every batch is tested in our ISO‑certified laboratory, and we provide a Certificate of Analysis (CoA) with each shipment. Our SGS‑verified quality system guarantees batch‑to‑batch consistency.
Dangerous goods expertise: THPC is classified as UN 2922 (Class 8, corrosive) . We have years of experience exporting hazardous chemicals – offering UN‑approved packaging, complete MSDS, and full transport documentation to ensure safe, compliant delivery worldwide.
We also provide free samples for pre‑order testing and technical support to help you optimize your application.
Choose HOO CHEMTEC for reliable THPC supply, professional dangerous goods handling, and a partnership you can trust.
