CAS: 55566-30-8
Molecular Formula: C8H24O12P2S
Molecular Weight: 406.28
EINECS: 259-709-0
Synonyms: octakis(hydroxymethyl)diphosphonium sulfate; tetrakis(hydroxymethyl)phosphonium sulphate(2:1); Tetrakis(hydroxymethyl)Phosphonium Sulphate; TetrakisHydroxymethylPhosphoniumSulfate(Thps); Tetrakis(hydroxymethyl)phospho; HISHICOLIN THPS; BIS[TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM] SULFATE
Tetrakis(hydroxymethyl)phosphonium sulfate CAS 55566-30-8 is mainly used as a bactericidal and algicidal agent in water treatment, oil field pipelines, fisheries and aquaculture. After use, it can quickly degrade into completely harmless substances and is also commonly used in industries such as fabric flame retardant treatment, leather softening, and papermaking.
| Item | Specification |
| Melting point | -35°C |
| Density | 1.4 g/mL at 25 °C(lit.) |
| Storage conditions | Sealed in dry,Room Temperature |
| MW | 406.28 |
| Purity | 99% |
| Boiling point | 111°C |
Tetrakis(hydroxymethyl)phosphonium sulfate CAS 55566-30-8 is widely used in industries such as water treatment, oil fields, and papermaking. Because its main advantage is the rapid degradation into completely harmless substances after use, greatly reducing the impact of such industries on the environment.
Oilfield reinjection water: Kills sulfate-reducing bacteria (SRB) and saprophytic bacteria, inhibits hydrogen sulfide formation, removes biofilms, dissolves ferrous sulfide scale, protects pipelines, and is a classic bactericide in the oil industry.
Industrial circulating cooling water: paper white water: Kills bacteria and algae, inhibits biological sludge; low foam, does not interfere with system heat exchange and filtration.
Aquaculture: Raw material for bottom modification products, reduces ammonia nitrogen, eliminates odor, improves the bottom quality, and inhibits harmful bacteria in the bottom layer (note: does not kill cyanobacteria).
Textile flame retardant: Permanent flame retardant for cotton and polyester fabrics, THPS + urea system, used for curtains, workwear, and fire-resistant fabrics, does not significantly affect fabric feel and dyeing.
Leather / wood: Leather tanning for mold prevention; wood anti-corrosion treatment.
Others: Water treatment, antibacterial in metal processing systems.
1. Broad-spectrum and highly effective, with low dosage: It has outstanding effects on SRB, and takes effect with a low dosage; it also has dual functions of sterilization and biological sludge removal.
2. Environmentally friendly and easily degradable: Tetrakis(hydroxymethyl)phosphonium sulfate belongs to EPA-approved green chemicals. After use, it decomposes into low-toxic substances, with low residue, and has less environmental pressure compared to traditional disinfectants.
3. Excellent water solubility, low foam: Tetrakis(hydroxymethyl)phosphonium sulfate can be mixed with water in any proportion, and has low foam characteristics, suitable for systems sensitive to foam such as circulating water and paper white water.
4. Wide pH range: The effective range is pH 2–9, and has better stability in alkaline conditions compared to DBNPA (which rapidly loses effectiveness when pH > 8.5).
5. Good compatibility: Tetrakis(hydroxymethyl)phosphonium sulfate can be compounded with most scale inhibitors and corrosion inhibitors; it is often used in rotation with glutaraldehyde to reduce microbial resistance.
6. Stable storage: With sealed conditions, the shelf life can reach 2 years, and it is not prone to oxidation and deterioration.
Multifunctional: One product for multiple uses. It can be used as a water treatment disinfectant and also as a textile flame retardant raw material.
Usually packed in 25kg/drum,and also can be do customized package.
Q: In which industries is THPS mainly used?
A: It is mainly used for water sterilization in oil fields, industrial circulating cooling water, paper white water disinfection, permanent flame retardants in textiles, aquatic bottom modification raw materials, wood preservation, leather anti-mildew.
Q: Storage conditions and shelf life?
A: Store in a cool and ventilated warehouse, away from strong alkalis and strong oxidants; shelf life is 24 months.
Q: Packaging specifications? MOQ (Minimum Order Quantity)?
A: Regular packaging: 25kg plastic drums, 1000L IBC tanker drums. Samples: 100–1000ml; MOQ: 25kg. COA, MSDS, TDS documents can be provided.
Q: Delivery time?
A: THPS liquid is in regular stock. After receiving the deposit, the goods will be dispatched within 3–7 working days; for large orders or IBC tanker drum production, the delivery time is 7–12 working days.
Q: How long does it take to send the samples?
A: After the sample fee and shipping cost are confirmed, the courier will be arranged within 1–3 working days; international courier options are DHL/FedEx, with the destination delivery time ranging from 3–7 days.
Q: Which documents can be provided? Will it affect the shipment?
A: Before shipment, provide COA, MSDS, PI, packing list, invoice; prepare hazardous package certificate and hazardous declaration. Additional certification documents need to be prepared with a certain lead time.
