In chemistry an arsenite is a chemical compound containing an arsenic oxoanion where arsenic has oxidation state +3.

The different forms of the anion are the next ones:

  • ortho-arsenite: AsO33-
  • meta-arsenite: AsO2-

Examples of arsenites include sodium arsenite which contains a polymeric linear anion, n, and silver arsenite, Ag3AsO3, which contains the trigonal, AsO33āˆ’ anion.

Arsenite contrasts to the corresponding anions of the lighter members of group 15, phosphite which has the structure HPO32āˆ’ and nitrite, NO2āˆ’ which is bent. Sodium arsenite is used in the water gas shift reaction to remove carbon dioxide. Arsenites are salts of arsenious acid.

Note that in fields that commonly deal with groundwater chemistry, arsenite commonly refers to As2O3, the acid anhydride of arsenious acid. Its white odorless crystals are toxic and very soluble in water. It occurs in nature as arsenolite and claudetite, and is also a byproduct of metal smelting. Its main use is in producing chromated copper arsenate (CCA) to treat timber. It is also used for arsenic pesticides, glass production, pharmaceuticals and non-ferrous alloys.

Read more about Arsenite:  Bacteria Using and Generating Arsenate

Other articles related to "arsenite, arsenites":

Arsenite - Bacteria Using and Generating Arsenate
... of bacteria obtain their energy by oxidizing various fuels while reducing arsenates to form arsenites ... bacteria were discovered that employ a version of photosynthesis with arsenites as electron donors, producing arsenates (just like ordinary photosynthesis uses water as electron donor ... In humans, arsenite inhibits pyruvate dehydrogenase (PDH complex) in the pyruvate acetyl CoA reaction, and binds to the SH group of lipoamide, a participant coenzyme ...
Neurotoxin - Mechanisms of Activity - Cytoskeleton Interference - Arsenic
... As a metabolite of arsenic, arsenite is formed after ingestion of arsenic and has shown significant toxicity to neurons within about 24 hours of exposure ... The mechanism of this cytotoxicity functions through arsenite-induced increases in intracellular calcium ion levels within neurons, which may subsequently reduce ... Another known function of arsenite is its destructive nature towards the cytoskeleton through inhibition of neurofilament transport ...
Sodium Arsenite
... Sodium arsenite refers to one of two compounds sodium meta-arsenite (NaAsO2) or sodium ortho-arsenite (Na3AsO3) ... The solid consists of sodium cations, Na+, and catena-arsenite anions, nāˆ’ n, which are infinite -O-As(=O)- chains ...
Arsenate Reductase (azurin)
... is an enzyme that catalyzes the chemical reaction arsenite + H2O + 2 azurinox arsenate + 2 azurinred + 2 H+ The 3 substrates of this enzyme are arsenite ... This enzyme is also called arsenite oxidase ...
Arsenite-transporting ATPase
... In enzymology, an arsenite-transporting ATPase (EC is an enzyme that catalyzes the chemical reaction ATP + H2O + arsenitein ADP + phosphate + arseniteout The ... The systematic name of this enzyme class is ATP phosphohydrolase (arsenite-exporting) ...