What is 2,4,5-TP (Silvex) ?

Fenoprop, or 2-2,4,5-trichlorophenoxy propionic acid, is an herbicide and a plant growth regulator, is a white powder and it sinks and mixes slowly with water, has a low odor due to phenolic impurities.
Its chemical formula is C9H7Cl3O3 and it is known as Silvex in the USA and 2,4,5-TP is used in France and was used in the former USSR and called 2,4,5-ТП.
It was and is used as an herbicide for the control of woody plants and broad leaf weeds.

What is Fenoprop used for?

2,4,5-Trichlorophenol was used as a fungicide in paper and pulp mills, as an herbicide, and as an intermediate in the manufacture of other pesticides.
Before 1985 when it was banned, the chemical was used on crops such as rice as well as on lawns.
The United States government banned the use of Silvex in 1985 due to health concerns, although until today there is no proof that SIlvex can be carcinogenic.
Also known as Fenoprop, the substance is used to control the weeds near aquatic facilities.
Silvex is broadcasted in riverbanks, ditches, and ponds to curb the growth of stubborn weeds.
It is also used in areas along reservoirs, streams, floodways, and canals.

Is Silvex Harmful?

Fenoprop has been banned from use as an herbicide in the United States since 1985, it was noted that dermal exposure to fenoprop was causing skin burn in humans, it could also irritate eyes, nose, pharynx, and lungs.
There is no information available on the chronic exposition to silvex, especially when we are talking about the carcinogenic potential in humans.
In one animal study, was detected a slight degenerative change in the liver and kidneys of rats chronically exposed to 2,4,5-trichlorophenol in their diet.
EPA has classified 2,4,5-trichlorophenol as a Group D, not classifiable as to human carcinogenicity.

2,4,5-trichlorophenol Contamination

The principal routes of human exposure to 2,4,5-trichlorophenol are inhalation and dermal contact of workers involved in the manufacture, formulation, or application of pesticides containing this compound.
This pesticide contaminates the groundwater in the areas where it was sprayed or stored, so it is commonly detected in drinking water.
2,4,5-Trichlorophenol may also be released in emissions from incinerators to the ambient air. The general population may be exposed to low levels of 2,4,5-trichlorophenol through the air, food, or drinking water.

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