Product Details


Tetrakis-Hydroxymethyl Phosphonium Chloride (THPC)

Vcycletech`s Tetrakis-Hydroxymethyl Phosphonium Chloride (THPC) is a versatile and innovative product that offers tremendous benefits in multiple industries. It boasts low toxicity, the rapid breakdown of the environment and almost no bioaccumulation with its chemical formula [P(CH2OH)4]Cl. Possessing four-coordinate properties typical for phosphonium salts, this product can be used as both an effective fire retardant material and an active micro biocide in commercial/industrial water systems. With its many advantages, THPC is quickly becoming a go-to choice for businesses looking to improve safety and efficiency. Contact vcycletech today to learn more about this groundbreaking solution!

Product Description

Structural Formula:

Tetrakis-Hydroxymethyl Phosphonium Chloride (THPC)

CAS #: 124-64-1
EINECS #: 204-707-7
Molecular Formula: C4H12CIO4S


The primary benefit of THPC is its low toxicity, which makes it safe to use around humans, animals and plants. This makes it ideal for many industrial applications, such as fire retardants and biocides, where hazardous materials may exist. Additionally, its rapid environmental breakdown ensures that it will not accumulate or persist in the environment, making it a safe solution for long-term applications without fear of contamination or pollution. Lastly, THPC exhibits excellent solubility in organic and aqueous solutions because of its four-coordinate properties as a phosphonium salt.


THPC can be used in multiple industries with tremendous efficiency. As an effective fire retardant material for textile production, THPC has been found to reduce flammability without compromising fabric integrity or colourfastness during use. This versatile compound can also control microbial growth in water systems; as an active micro biocide, it can quickly eradicate bacteria while being relatively safe enough not to affect humans or wildlife adversely. Finally, THPC can also be used as an effective sanitiser against germs and viruses without leaving unwanted residues or odours due to its low toxicity levels.


Tetrakis(hydroxymethyl)phosphonium Chloride, 80%
Product Number SMC Global 651
Active Content, wt.% 80.0 – 82.50
Phosphorous Content, wt.% 13.0 – 13.4
pH 3.0 – 5.0
Specific Gravity (25°C) 1.32 – 1.35


Q: Is Tetrakis-Hydroxymethyl Phosphonium Chloride toxic?

A: No – THPC boasts extremely low toxicity levels, making it safe for humans and animals.

Q: How quickly does THCP break down in the environment?

A: Very quickly – due to its rapid degradation rates, THCP does not accumulate or persist in the environment, meaning there’s no worry of contamination or pollution from long-term use.

Q: What are some industrial applications of Tetrakis-Hydroxymethyl Phosphonium Chloride?

A: As an effective fire retardant material for textiles production and an active micro biocide control solution for water systems; additionally, this versatile compound can be used as a sanitiser against germs and viruses safely without leaving any unwanted residues or odours.

Q: Does Tetrakis-Hydroxymethyl Phosphonium Chloride have four-coordinate properties?

A: Yes – like most phosphonium salts, this innovative material exhibits excellent solubility in organic and aqueous solutions due to its four-coordinate structure, which gives it superior stability relative to regular salts alone.

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