Tetrakis (hydroxymethyl) phosphonium sulfate is a green, environmentally friendly fungicide and algaecide. It has a beneficial effect on soil remediation in aquaculture and can remove ferrous sulfide-reducing bacteria in oilfield production, helping to unclog pipes and remove slime. It is a reducing agent, not an oxidizing agent. The soil remediation mechanism of tetrakis (hydroxymethyl) phosphonium sulfate granules is relatively complex, primarily involving charge transfer between the phosphorus and hydroxymethyl -CH2-OH groups within the group. It also has implications for bacterial colonies in the water environment. THPS has high water solubility and can be combined with a variety of fungicides, water treatment agents, and oilfield additives for synergistic bactericidal effects.

I. Basic Information

English Name: Tetrakishydroxymethylphosphoniumsulfate (THPS)

HS Code: 2931909090

CAS Number: 55566-30-8

Molecular Weight: 406.27

Melting Point: -35℃

Boiling Point: 111℃

Flash Point: 96℃

Molecular Formula: [(CH2OH)4P]2SO4

EINECS Number: 259-709-0

II. Product Features

1. Good Water Solubility

The maximum content can reach 75%. It is miscible with water and has good solubility in other additives.

2. Good Compatibility

It can be blended with a variety of fungicides and water treatment agents. With the exception of non-oxidizing and strongly alkaline chemicals, it can be blended with almost any other additive after adding auxiliary additives.

3. Environmentally Friendly

Tetrakishydroxymethylphosphoniumsulfate, when used in aquatic products and petroleum sterilization, generally produces sulfates and other substances, which are harmless to the environment. 4. Stable Properties and Long Shelf Life

When sealed, it is extremely stable, absorbs virtually no moisture from the air, and undergoes no oxidation, allowing for a shelf life of up to two years.

5. Wide Range of Applications

THPS can be made into various colored THPS granules with varying concentrations in aquatic products, effectively removing ammonia nitrogen odors. When condensed with urea (THPS-Urea), it becomes an excellent flame retardant for leather and an environmentally friendly oilfield fungicide.

III. Technical Specifications

Content≥75%

Active Phosphorus≥11.0%

Specific Gravity (25℃): 1.37-1.41 g/ml

Viscosity (20℃): 30-45 cps (mPa.s)

Iron (Fe)≤0.0015%

PH: 2.5-5.5

IV. Export Precautions

THPS is a Category 8 chemical and requires inspection for hazardous materials packaging upon export. A small container can hold 19.6 tons.

V. Storage and Packaging

Store in a cool, dry, and well-ventilated warehouse, separated from other chemicals.

Tetrakis (hydroxymethyl) phosphonium sulfate (Tetrakis (hydroxymethyl) phosphonium sulfate) has carbon atoms linked to phosphorus atoms and hydroxymethyl groups in its molecular structure. Therefore, it shares some properties with quaternary ammonium salts, exhibiting broad-spectrum, highly effective, and long-lasting bactericidal effects. Tetrakis (hydroxymethyl) phosphonium sulfate primarily reacts with PH3and H2SO4. Its market price trend is not directly related to raw material prices but rather to demand from overseas oil fields.