The following FPRL product is EPA registered.

COPPERSHIELD® Industrial Use is FPRL's formulation of a wood preservative system that meets AWPA standards as Acid Copper Chromate (ACC).

• ACC has a long and valued history in the treating industries of Europe and the United
  States with no record of creating health problems.
  
  
• Developed in 1926 by Gilbert Gunn of the Celcure Company
  
  
• Patented in 1928 by Gunn
  
  
• ACC has been used continuously since the 1930's.
  
  
• ACC formula standardized by American Wood-Preservers' Association (AWPA) in the
  1950's.
  
  
• ACC eventually replaced by Chromated Copper Arsenate (CCA) due to lower cost.
  
  
• CCA was voluntarily withdrawn from the marketplace by the CCA suppliers and replaced
  with Alkaline Copper Quat (ACQ) and Copper Azole Type B (CA-B).
  
  
• CCA has arsenic; ACC does not have arsenic.
  
  
• ACC does have copper which is an ultra-violet (UV) barrier protecting the wood's surface.
  
  
• Copper is the world's most used fungicide for protecting agricultural crops and wood.
  
  
• ACC does have trivalent chromium (Chrome III) which "fixes" the copper to the wood and
  is an ultra-violet barrier, a water repellent, and a corrosion inhibitor.
  
  
• Chrome III is the most stable species of chromium.
  
  
• Chrome III is an essential nutrient in the human diet.
  
  
• Chrome VI, not Chrome III, is the listed known carcinogen along with alcoholic beverage
  consumption, asbestos, environmental tobacco smoke, estrogens steroidal, mineral oils
  (untreated and mildly treated), smokeless tobacco, sunlamps or sunbeds, tobacco smoking,
  and wood dust. (Department of Health and Human Services, National Toxicology Report
  on Carcinogens, Tenth Edition)
  
  
• Environmental Protection Agency (EPA) has said the chromium in CCA treated wood
  does not pose a cancer risk.
  
  
• ACC is used to treat cooling tower lumber due to being arsenic-free and quality "fixation."
  
  
• ACC has fewer corrosion issues than ACQ/CA-B.
  
  
• ACC has fewer mold issues than ACQ/CA-B.
  
  
• ACC has lower leaching issues than ACQ/CA-B.
  
  
• "ACC has a great history in the New Orleans area. ACC was used by Louisiana Wood Treating until the late 1960's. Only one piece of ACC-treated wood was returned since I have been on this site. Three years ago we reviewed a 6 x 8 gate post that had been installed in the mid-1950's and it was in great shape. I have used ACC half my life and prefer it to CCA." - George Herron, Louisiana (August 2004)
  

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