Tetrakis Hydroxymethyl-Phosphonium Sulfate, THPS Biocide, THPS Chemical


Tetrakis hydroxymethyl-phosphonium sulfate (THPS) is a kind of environmental anti-microbial reagent. It’s characterized by its low solidity point and fine stability. THPS biocide can be reserved for a long time and can easily dissolve in water.

Tetrakis hydroxymethyl-phosphonium sulfate is a kind of new environmental pesticide with high efficacy, low toxicity and low rudimental. THPS chemicals can kill germ and aquatic plants. In 1995, the EPA (Environmental Protection Agency) of the US ratified it with zero toxicity and awarded it with US Green Chemical prize.

CAS No.: 55566-30-8

Molecular Formula: C8H24O12P2S

Molecular Weight: 406.27

Structural Formula:



Active Content, %≥ 75.0
Stick ability (25°C), mPa.S30.0~36.0
Density (25°C)1.350~1.420
Fe, %≤ 0.002


THPS biocide mainly used in water treatment systems, oil field operations, and paper-making industry. The advantage is it will soon degrade to a nontoxic substance immediately after use. Also, THPS biocide can be applied to fabric coating as flame retardant, obviously improving the flame-retarding property.

Package and Storage:

Net weight 250kg in plastic drum Keep hermetic.