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  • As2O3
  • Arsenic trioxide (As2O3) inhibits cell growth and induces apoptosis(programmed cell death)i in certain types of cancer cells, which are normally immortal and can multiply without limit. (wikipedia.org)
  • More common, and far more important commercially, is arsenic(III) oxide (As2O3). (wikipedia.org)
  • Alternatively arsenic(III) oxide can be used as the precursor in the presence of elemental sulfur: 2 As2O3 + 3 S + 6 Br2 → 4 AsBr3 + 3 SO2 AsBr5 is not known, although the corresponding phosphorus compound PBr5 is well characterized. (wikipedia.org)
  • It can be prepared by reacting hydrogen fluoride, HF, with arsenic trioxide: 6HF + As2O3 → 2AsF3 + 3H2O It has a pyramidal molecular structure in the gas phase which is also present in the solid. (wikipedia.org)
  • phosphorus
  • The pentachlorides of the elements above and below arsenic in group 15, phosphorus pentachloride and antimony pentachloride are much more stable and the instability of AsCl5 appears anomalous. (wikipedia.org)
  • Although phosphate and arsenate are structurally similar, there is no evidence that arsenic replaces phosphorus in DNA or RNA. (wikipedia.org)
  • as a result, although there is still a solid solution with that oxide, it only progresses to the equimolar point, at which point phosphorus has substituted for arsenic in all of its tetrahedral sites. (wikipedia.org)
  • amount of inorganic arsenic
  • In a neatly choreographed response, the FDA promptly released its own sample results from - yes - some 200 rice products which turned up a comparable amount of inorganic arsenic in the selected foods, which ranged from baby cereal to rice cakes to bagged rice. (wired.com)
  • However, we have increased the amount of inorganic arsenic in our soil due to pesticides use, water contamination, CCA wood preservatives, sewage sludge, and air pollution from burning fossil fuels and metal smelting. (ecochildsplay.com)
  • Colourless
  • Colourless, odourless and tasteless, arsenic is commonly found in food and its raw ingredients. (sgs.com)
  • 2As2O5 + 10F2 → 4AsF5 + 5O2 2As2O3 + 10F2 → 4AsF5 + 3O2 Arsenic pentafluoride is a colourless gas and has a trigonal bipyramidal structure. (wikipedia.org)
  • trichloride
  • This compound was first prepared in 1976 through the UV irradiation of arsenic trichloride, AsCl3, in liquid chlorine at −105 °C. AsCl5 decomposes at around −50 °C. The structure of the solid was finally determined in 2001. (wikipedia.org)
  • Arsenic trichloride is an inorganic compound with the formula AsCl3, also known as arsenous chloride or butter of arsenic. (wikipedia.org)
  • Arsenic trichloride contains predominantly covalent bonds, which explains its low melting point. (wikipedia.org)
  • Chem 2002, volume 41, pp. 693-698.doi:10.1021/ic0102788 Klapoetke, Thomas M. "The vibrational spectrum of arsenic trichloride" Main Group Metal Chemistry 1997, volume 20, pp. 81-83. (wikipedia.org)
  • R. C. Smith, "Manufacture of Arsenic trichloride" The Journal of Industrial and Engineering Chemistry 1919, volume 11, pp. 109-110. (wikipedia.org)
  • chronic
  • Arsenic is related to heart disease (hypertension-related cardiovascular disease), cancer, stroke (cerebrovascular diseases), chronic lower respiratory diseases, and diabetes. (wikipedia.org)
  • Chronic arsenic poisoning is known as arsenicosis. (wikipedia.org)
  • It emitted arsenic-containing air, resulting in patients with chronic arsenic poisoning producing skin changes, skin cancers and sometimes lung cancer. (wikipedia.org)
  • Workers and inhabitants developed chronic arsenic poisoning, and 5 died in a family of 7 in succession. (wikipedia.org)
  • Seven patients were examined extensively at Kumamoto University, and they were diagnosed as having chronic arsenic poisoning due to pollution, in a report published in 1973. (wikipedia.org)
  • In addition to the skin and ENT findings, neuritis was added as a criterion of chronic arsenic poisoning. (wikipedia.org)
  • Bowen's disease, Lung cancer, and cancer of the urinary organ were added as appearing following chronic arsenic poisoning. (wikipedia.org)
  • Clinical aspects of chronic arsenic poisoning due to environmental and occupational pollution in and around a small refining spot. (wikipedia.org)
  • arsenate
  • Arsenic biochemistry refers to biochemical processes that can use arsenic or its compounds, such as arsenate. (wikipedia.org)
  • Trimethylarsine, produced by microbial action on arsenate-derived pigments Arsenic-containing ribose derivatives (R = several groups) A topical source of arsenic are the green pigments once popular in wallpapers, e.g. (wikipedia.org)
  • effects of arsenic
  • A five-year, $2.7 million grant from the National Institute of Environmental Health Sciences will help researchers at the University of Illinois at Chicago answer basic questions about the role of arsenic in the development of diabetes and examine the mechanisms by which selenoproteins - found in the human body in 25 different forms - counter the effects of arsenic. (news-medical.net)
  • CURWOOD: How can somebody protect themselves and their family from the effects of arsenic in the drinking water? (loe.org)
  • evidence that arsenic
  • Although there is no good evidence that arsenic can harm pregnant women or their fetuses, studies in animals show that doses of arsenic that are large enough to cause illness in pregnant females may cause low birth weight, fetal malformations, or fetal death. (virginia.gov)
  • The evidence that arsenic may be a beneficial nutrient at trace levels below the background to which living organisms are normally exposed has been reviewed. (wikipedia.org)
  • Arsenous
  • Arsenic pentasulfide hydrolyzes in boiling water, giving arsenous acid and sulfur: As2S5 + 6 H2O → 2 H3AsO3 + 2 S + 3 H2S It oxidizes in air at elevated temperatures producing arsenic oxides, the products and yields of which are variable. (wikipedia.org)
  • Arsenic contaminated water typically contains arsenous acid and arsenic acid or their derivatives. (wikipedia.org)
  • Arsenic acid tends to exist as the ions [HAsO− and [H2AsO in neutral water, whereas arsenous acid is not ionized. (wikipedia.org)
  • West Bengal
  • Because of the low quantity of deep tubewells, the risk of arsenic poisoning in West Bengal is comparatively less. (wikipedia.org)
  • According to the World Health Organisation, "In Bangladesh, West Bengal (India), and some other areas most drinking-water used to be collected from open dug wells and ponds with little or no arsenic, but with contaminated water transmitting diseases such as diarrhoea, dysentery, typhoid, cholera, and hepatitis. (wikipedia.org)
  • water
  • They have no smell, and most have no special taste, so you cannot tell if arsenic is present in your food, water, or air. (in.gov)
  • If you live in an area with naturally high levels of arsenic or near a hazardous waste site, you may take arsenic in through your water or from food grown in the soil. (in.gov)
  • Because arsenic is a natural part of the environment, low levels of arsenic are present in soil, water, food, and air. (in.gov)
  • More recently, it has been discovered that a number of other regions have drinking-water that is highly contaminated with arsenic. (inchem.org)
  • The WHO guideline recommends that levels of arsenic in drinking-water should not exceed 10 micrograms per litre. (inchem.org)
  • Informative epidemiological studies of cancer in relation to arsenic in drinking-water include ecological studies and fewer case control and cohort studies. (inchem.org)
  • In contrast, for arsenic in drinking-water, ecological studies provide important information for causal inference. (inchem.org)
  • There is extensive evidence of increased risks for urinary bladder cancer associated with arsenic in drinking-water. (inchem.org)
  • In Taiwan, the evidence is supported by case control studies and cohort studies within the exposed communities that demonstrate evidence of dose response relationships with levels of arsenic in drinking-water. (inchem.org)
  • Anyone can be exposed to arsenic since low levels of arsenic are present in soil, water, food, and air. (virginia.gov)
  • People are primarily exposed to arsenic through eating food (fish and shellfish), drinking water, or breathing air containing arsenic. (virginia.gov)
  • If wells are drilled in areas where naturally occurring arsenic is present in the soil or rock, drinking water can become contaminated with arsenic. (virginia.gov)
  • Drinking water contaminated with high levels of arsenic has been associated with increased risk of skin, lung, bladder, and kidney cancer. (virginia.gov)
  • Research conducted at Montana State University shows that microbes in the human gut play an important role in protecting against arsenic toxicity, a problem that affects an estimated 200 million people who are exposed to arsenic through contaminated drinking water. (news-medical.net)
  • Garlic may provide some relief for millions of Bangladeshis and Indians whose drinking water is contaminated with arsenic. (newscientist.com)
  • Arsenic polluted water causes death. (hubpages.com)
  • We can also purify arsenic contaminated water in a chemical process. (hubpages.com)
  • In 2001, the USEPA lowered the MCL for arsenic in public-water supplies to 10 micrograms per liter (µg/L) from 50 µg/L. (usgs.gov)
  • Whether across the U.S. or around the world, the USGS helps measure and monitor drinking water supplies for contaminants like arsenic. (usgs.gov)
  • This map shows estimates of how many private domestic well users in each county may be drinking water with levels of arsenic of possible concern for human health. (usgs.gov)
  • The Bush administration is putting the brakes on regulations that would sharply reduce the amount of arsenic allowed in drinking water. (loe.org)
  • Arsenic is a potent poison and the government has a limit on it in water but not in wine. (courant.com)
  • The feds limit arsenic in water to 0.010 milligrams per liter, or 10 parts per billion. (courant.com)
  • Arsenic exists naturally in our environment and can be found in the air we breathe, the water we drink and the ground we walk on. (sgs.com)
  • Most crops absorb arsenic from the soil and water in their environment. (sgs.com)
  • The presence of arsenic in food and water is unavoidable, but food producers should be aware of legislation and the impact of the more toxic inorganic arsenic on raw materials and ingredients. (sgs.com)
  • Since rice is grown in water, it sucks up arsenic in the soil. (ecochildsplay.com)
  • Lead plaintiff Doris Charles claims that the defendants' wines contain "inorganic arsenic in amounts far in excess of what is allowed in drinking water," but do not disclose it to consumers. (courthousenews.com)
  • Prevention is by using water that does not contain high levels of arsenic. (wikipedia.org)
  • Through drinking water, more than 200 million people globally are exposed to higher than safe levels of arsenic. (wikipedia.org)
  • Inorganic arsenites (arsenic(III)) in drinking water have a much higher acute toxicity than organic arsenates (arsenic(V)). The acute minimal lethal dose of arsenic in adults is estimated to be 70 to 200 mg or 1 mg/kg/day. (wikipedia.org)
  • Long-term ingestion of arsenic trioxide either in drinking water or as a medical treatment can lead to skin cancer. (wikipedia.org)
  • Toroku arsenic disease (土呂久砒素公害, Toroku hiso kōgai) was a disease resulting from air and water pollution from a refinery at a mine at Toroku, located in Takachiho, Nishiusuki District, Miyazaki, Japan. (wikipedia.org)
  • It filters nearly all of the arsenic from the well water. (wikipedia.org)
  • A simple and effective arsenic filter based on composite iron matrix: Development and deployment studies forgroundwater of Bangladesh - (PDF file) DWC-Water: Arsenic filtration - description and test results. (wikipedia.org)
  • It is a high-profile problem due to the use of deep tubewells for water supply in the Ganges Delta, causing serious arsenic poisoning to large numbers of people. (wikipedia.org)
  • A 2007 study found that over 137 million people in more than 70 countries are probably affected by arsenic poisoning of drinking water. (wikipedia.org)
  • Contaminated Water Could Poison 60 Million in Pakistan in 2017 With 'Alarmingly High' Arsenic Levels. (wikipedia.org)
  • Bangladesh is the most affected country by arsenic poisoning through drinking water. (wikipedia.org)
  • About 7-11 million wells or hand pumped wells are providing arsenic polluted water to local people. (wikipedia.org)
  • Estimation of Arsenic Intake from Drinking Water and Food (Raw and Cooked) in a Rural Village of Northern Chile. (wikipedia.org)
  • However, with over 8 million wells constructed, approximately one in five of these wells is now contaminated with arsenic above the government's drinking water standard. (wikipedia.org)
  • water deeper than 100 m is exposed to much older sediments which have already been depleted of arsenic. (wikipedia.org)
  • Programmes to provide 'safe' drinking-water over the past 30 years have helped to control these diseases, but in some areas they have had the unexpected side-effect of exposing the population to another health problem-arsenic. (wikipedia.org)
  • 1976
  • The Manfredonia accidental release of arsenic took place near the Italian town Manfredonia in September 1976 at the Enichem petrochemical plant, which produced fertilizers and caprolactam, a precursor in the manufacture of nylon. (wikipedia.org)
  • arsenates
  • Copper arsenates, which are derived from arsenic trioxide, are used on a large scale as a wood preservative in the US and Malaysia, but such materials are banned in many parts of the world. (wikipedia.org)
  • Scheele prepared a number of arsenates by the action of arsenic acid on the alkalies. (wikipedia.org)
  • acute arsenic
  • The treatment of acute arsenic poisoning involves washing out the stomach and the prompt administration of dimercaprol (BAL). (britannica.com)
  • The first symptoms of acute arsenic poisoning by ingestion are digestive problems: vomiting, abdominal pains, diarrhea often accompanied by bleeding. (wikipedia.org)
  • acid
  • The introduction of all- trans retinoic acid (ATRA) and arsenic trioxide has brought about tremendous advancement in the treatment of acute promyelocytic myelogenous leukemia (APML). (hindawi.com)
  • however, the introduction of all- trans retinoic acid (ATRA) and arsenic trioxide has brought about tremendous advancement in treatment strategies, with the majority of newly diagnosed and relapsed patients being able to be cured with these agents [ 4 , 5 ]. (hindawi.com)
  • Arsenic trioxide, under the tradename Trisenox (manufacturer: Cephalon acquired by Teva), is a chemotherapeutic agent approved by the US FDA for the treatment of acute promyelocytic leukemia that is unresponsive to "first line" agents, namely all-trans retinoic acid (ATRA). (wikipedia.org)
  • The combination therapy of arsenic trioxide and all-trans retinoic acid (ATRA) has been approved by the U.S. Food and Drug Administration (FDA) for treatment of certain leukemias. (wikipedia.org)
  • This salt was the obtaining residue after distilling nitric acid from a mixture of potassium nitrate and arsenic trioxide. (wikipedia.org)
  • Arsenic acid can be generated via routine processing of arsenic compounds including the oxidation of arsenic and arsenic-containing minerals in air. (wikipedia.org)
  • More descriptively written as AsO(OH)3, this colorless acid is the arsenic analogue of phosphoric acid. (wikipedia.org)
  • Arsenic acid as such has not been isolated, but only found in solution where it is largely ionized. (wikipedia.org)
  • Unlike phosphoric acid, arsenic acid is an oxidizer, illustrated by its ability to convert iodide to iodine. (wikipedia.org)
  • Arsenic acid is prepared by treating arsenic trioxide with concentrated nitric acid. (wikipedia.org)
  • 2 As + 3 H2O + 5 O3 → 2 H3AsO4 + 5 O2 Commercial applications of arsenic acid are limited by its toxicity. (wikipedia.org)
  • chemistry
  • doi:10.1002/9780470132326.ch36 Shakhashiri BZ, "Chemical of the Week: Arsenic", University of Wisconsin-Madison Chemistry Dept. (wikipedia.org)
  • AsCl3 is useful in organoarsenic chemistry, for example triphenylarsine is derived from AsCl3: AsCl3 + 6 Na + 3 C6H5Clchlorobenzene → As(C6H5)3triphenylarsine + 6 NaCl Arsenic compounds are highly toxic, and AsCl3 especially so because of its volatility and solubility. (wikipedia.org)
  • The Sono arsenic filter was invented in 2006 by Abul Hussam, who is a chemistry professor at George Mason University (GMU) in Fairfax, Virginia. (wikipedia.org)