for what kind of preservation is it used in the us?
For wood preservation.
Arsenic
Ninety percent of this was used for treatment of wood with chromated copper arsenate (CCA). In 2007, 50% of the 5,280 metric tons of consumption was still used for this purpose. In the United States, the voluntary phasing-out of arsenic in production of consumer products and residential and general consumer construction products began on 31 December 2003, and alternative chemicals are now used, such as Alkaline Copper Quaternary, borates, copper azole, cyproconazole, and propiconazole.

Although discontinued, this application is also one of the most concerning to the general public. The vast majority of older pressure-treated wood was treated with CCA. CCA lumber is still in widespread use in many countries, and was heavily used during the latter half of the 20th century as a structural and outdoor building material
what is the difference between sea otters and seals UNANSWERABLE where are such otters found? Along the coasts of northern and eastern North Pacific Ocean. what is its scientific name? "Enhydra lutris" . who are its predators? Orcas, sea lions, bald eagles, great white sharks in the water and coyote s, and bears on land. do these otters have social structures? They tend to rest together in single-sex groups called rafts consisting of 10 to 100 animals. how do they forage? They take short dives to the sea floor, may turn over rocks in search of prey like fish , snails and other organisms. At times it amy also carry a rock in the pouch across its chest to break open shellfish and clams. who is the first person to describe them? Georg Steller. who is he? He was a naturalist. how does sea otter impact the economy? Sea otters are blamed for declines in shellfish harvest. However, they help the kelp harvesting industry and also pose as a major tourist attraction. in which religion does the above mentioned fish harvested have dietary restrictions? The Jews and the Seventh-day Adventists. mention a few toxic contents in it? Arsenic and toxins released by dinoflagellate. is the first content a chemical element? Yes, it is. is it used in treatment? It is used for locating tumors, for treating trypanosomiasis and other diseases. how much of it is legally allowed in foods? 23ppb for inorganic arsenic in apple and pear juices as per the limits set by the U.S. Food and Drug Administration. what is its classification? Elemental arsenic and arsenic sulfate and trioxide compounds are classified as "toxic" and "dangerous for the environment" in the European Union.
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Arsenic [SEP] Wood preservation in the US
As of 2002, US-based industries consumed 19,600 metric tons of arsenic. Ninety percent of this was used for treatment of wood with chromated copper arsenate (CCA). In 2007, 50% of the 5,280 metric tons of consumption was still used for this purpose. In the United States, the voluntary phasing-out of arsenic in production of consumer products and residential and general consumer construction products began on 31 December 2003, and alternative chemicals are now used, such as Alkaline Copper Quaternary, borates, copper azole, cyproconazole, and propiconazole. Although discontinued, this application is also one of the most concerning to the general public.