Table of Contents
Is arsenite the same As arsenic?
Arsenic exists in two oxidation states—arsenate, As(III), and arsenite, As(V)—both of which are anions (see also Chapter 8). Although both forms are toxic, arsenite is much more toxic and is also very soluble and mobile in water environments.
What is arsenite used for?
a potassium arsenite solution containing 7.6g As/L) has been used for the treatment of leukemia, psoriasis, and chronic bronchial asthma, and organic arsenic compounds have been extensively used in the treatment of spirochetal and protozoal disease (Martindale, 1977; NRC, 1999).
Is arsenite less toxic than arsenate?
Arsenites (As3+ or trivalent) are 5–10 times more toxic than arsenates (As5+ or pentavalent) due to higher solubility.
Why is arsenic called arsenic?
Arsenic gets its name from a Persian word for the yellow pigment now known as orpiment. For keen lexicographers apparently the Persian word in question Zarnikh was subsequently borrowed by the Greeks for their word arsenikon which means masculine or potent.
Why is arsenite more toxic?
Arsenite the (trivalent form) has a slower excretion rate compared to arsenate the (pentavalent form) and organic arsenic, which may contribute to arsenite’s increased toxicity compared to arsenate and organic arsenic.
What does arsenate look like?
Arsenic is a naturally occurring element. In the pure form, it is a silver-gray, semi-metallic substance that tarnishes in air. However, arsenic is found in nature in various inorganic and organic compounds. Inorganic and organic arsenic compounds are white in color, and have no smell or special taste.
What is arsenic trioxide used for?
Descriptions. Arsenic trioxide injection is used together with another medicine (eg, tretinoin) to treat newly-diagnosed low-risk acute promyelocytic leukemia (APL), a type of leukemia (cancer of the blood cells). It is also used to treat APL in patients who have not responded to other medication regimens.
What’s the difference between organic and inorganic arsenic?
Inorganic arsenic compounds are found in soils, sediments, and groundwater. These compounds occur either naturally or as a result of mining, ore smelting, and industrial use of arsenic. Organic arsenic compounds are found mainly in fish and shellfish.
What is the difference between arsenic and arsine?
The key difference between arsenic and arsine is that arsenic is a chemical element, whereas arsine is a chemical compound. Arsine is a gaseous chemical compound that originates from the combination of arsenic and hydrogen atoms. Arsenic usually exists as a metalloid in room temperature, while arsine is a gas that is flammable and toxic.
What is the difference between arsenate and arsenite?
is that arsenate is (chemistry) any salt or ester of arsenic acid while arsenite is (chemistry) any oxyanion of trivalent arsenic, especially the aso 33- anion (or protonated derivatives); any salt containing this anion, or any ester of arsenious acid. Other Comparisons: What’s the difference?
What is the crystal structure of arsenic?
The crystal structure of arsenic is rhombohedral. When considering its magnetic properties, arsenic is diamagnetic. Grey arsenic is a brittle material due to the weak chemical bonding between the layers of the allotrope. It also has a low hardness. What is Arsine? Arsine is a gaseous compound having the chemical formula AsH 3.