Penta wood preservative

In order to last for decades after they are sunk into the groun wood utility poles need preservatives that fend off termites, fungi, and the elements. Not many chemicals are up to the challenge. About half the wood poles in the US are treated with pentachlorophenol, known as “ penta” in the trade. It can be biodegraded by some bacteria, including Sphingobium chlorophenolicum.

It was primarily used as a wood preservative. Pentachlorophenol (PCP) is an organochlorine compound used as a pesticide and a disinfectant. Wood preservative products are those that claim to control wood degradation problems due to fungal rot or decay, sapstain, molds, or wood -destroying insects. Both the treatment process and the use of treated-products can result in exposure to pesticides for both people and the environment. Inorganic boron is listed as a wood preservative in the AWPA standards, which include formulations prepared from sodium octaborate, sodium tetraborate, sodium pentaborate , and boric acid.

While a homemade borate and propylene glycol solution is often mentioned as a wood preservative , the instructions call for boiling the mixture until it reaches 2degrees Fahrenheit. While borax and boric acid are not flammable, the flash point of propylene glycol is 224. Wood Preservative shields wooden surfaces from the elements and wood-eating insects. The heavy-duty, solvent-based preservative protects new wood and highlights the weathering process and prevents future damage for old wood. The product is easy to use on pressure-treated end cuts.

PenaShield is a ready-to-use formula that can be sprayed or brushed on raw wood. It is a unique patented preservative that penetrates the wood , delivering long-lasting protection. It is no longer available to the general public. It is still used industrially as a wood preservative for utility poles, railroad ties, and wharf pilings.

It is used primarily to treat wooden utility structures including poles, crossarms and log anchors. The migration of pentachlorophenol beyond the immediate vicinity of treated utility poles has been documented nationally. Vulcan Chemicals, located in Wichita, Kansas, is penta’s sole U. Environmental Protec-tion Agency (EPA) cancelled all uses of penta except for its use as a wood pre-servative.

Contractors Referral. It can be found as pure PCP, or as the sodium salt of PCP, the latter of which dissolves easily in water. Free Shipping Available. Money Back Guarantee!

Waterborne, Creosote, and Oil-borne ( penta ) are the three broad classes of preservatives typically used when pressure-treating wood. C6Cl5OH, used chiefly in fungicides, disinfectants, and wood preservatives. Long-Term Performance of Preservative -Treated Shingles of Western Wood Species The range of oxidizable substrates is broad and includes pentachlorophenol, 6-dimethoxyphenol aromatic amines and other easily oxidizable aromatic compounds, as well as azo dyes (1 11). It is widely used to treat field cuts of pressure-treated wood that are made during construction. Linseed oil seems to have fallen out of fashion and by the wayside.

It has been used in Canada for almost half a century. Oil-borne penta is used extensively for the treatment of utility poles. Internet Archive HTMLUploader.

Since then, penta has been a restricted-use pesticide for use by certified applicators only. One of the primary products treated with penta preservative is utility poles. It is applied to pine poles by vacuum pressure treatment at a manufacturing facility with binding agents from hydrocarbons, including diesel fuel and kerosene. The main use of pentachlorophenol, as a heavy duty wood preservative , is to treat utility poles. Although its only remaining use in the U. Penta is mostly used now in the U. For many years, penta has been the most widely used preservative for poles.

With the increase in cost of petroleum-based products, penta -in-oil treated pole costs have also increased. Presently, both penta and waterborne preservatives are widely used with both preservatives having performed satisfactorily. This unique formula contains an insecticide and nearly double the fungicide of standard sealers or stains.

It’s paintable and stainable. Insecticidal preservative prohibits termite damage, rot and decay.