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Chromated copper arsenate (CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions.It is used to impregnate timber and other wood products, especially those intended for outdoor use, in order to protect them from attack by microbes and insects.
The APVMA decision to restrict the use of CCA in Australia was a precautionary measure, even though the report [13] found no evidence that demonstrated CCA treated timber posed unreasonable risks to humans in normal use. Similarly to the US EPA, the APVMA did not recommend dismantling or removal of existing CCA treated wood structures.
The copper in ACQ treated wood accelerates corrosion of galvanized steel fasteners (such as nails and screws) 10 times or more in comparison with CCA-treated wood. Stainless steel (AISI 316) is not affected. [7] Aluminium and Galvalum fasteners should be avoided. [8] One should use fasteners made of hot-dipped galvanized steel, copper, or ...
Multiple major wildfires are leaving a trail of destruction and death in the Los Angeles area.. A handful of wildfires that kicked up Tuesday, powered by high winds and dry conditions, have ...
The researchers used RNA sequencing and brain-mapping tools to analyze more than 1.2 million brain cells from young mice (2 months old) and older mice (18 months old).
With the Detroit Lions at risk of being the first 14-win team to be a wild-card seed, Amon-Ra St. Brown says the NFL should change its playoff format.
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