Sodium selenite fast facts
| CAS Reg. No. | 10102-18-8 |
| SciFinder nomenclature | Selenious acid, sodium salt (1:2) |
| Empirical formula | Na2O3Se |
| Molar mass | 172.94 g/mol |
| Appearance | Colorless crystals or white powder |
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Sodium selenite fast facts.
What is the formula for sodium selenite?
Sodium selenite is the inorganic compound with the formula Na 2 SeO 3. This salt is a colourless solid. The pentahydrate Na 2 SeO 3 (H 2 O) 5 is the most common water-soluble selenium compound. Synthesis and fundamental reactions. Sodium selenite usually is prepared by the reaction ...
What is disodium selenite?
Sodium selenite appears as a white colored crystalline solid. Soluble in water and more dense than water. Contact may irritate skin, eyes and mucous membranes. Toxic by ingestion, inhalation and skin absorption. Disodium selenite is an inorganic sodium salt composed of sodium and selenite ions in a 2:1 ratio. It has a role as a nutraceutical.
What is the difference between selenium and sodium selenite?
While scientists have determined that organic selenium is processed more efficiently, concrete data on the improved bioavailability of organic selenium are not yet available. Sodium selenite is made using lab-grade chemicals, and outside of the world of nutrition, it is commonly used to make colourless glass.
What is selenite made of?
Sodium selenite is made using lab-grade chemicals, and outside of the world of nutrition, it is commonly used to make colourless glass. Selenomethionine, however, is chemically identical with the selenium you find naturally in food and in the body.
Is sodium selenite the same as salt?
Disodium selenite is an inorganic sodium salt composed of sodium and selenite ions in a 2:1 ratio. It has a role as a nutraceutical. It is a selenite salt and an inorganic sodium salt.
Is sodium a selenite?
Sodium selenite is the inorganic compound with the formula Na2SeO3. This salt is a colourless solid. The pentahydrate Na2SeO3(H2O)5 is the most common water-soluble selenium compound. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Is sodium selenite the same as selenite crystal?
Before delving into this issue, you should know a major difference between sodium selenite, which is deemed a hazardous substance, and the selenite you purchase as a crystal to use for protection, healing, and other properties. The latter is of the gypsum variety and is, therefore, neither toxic nor poisonous.
Is sodium selenite the same as selenium?
Sodium selenite is easy to make, but it's inorganic, and the body has trouble processing it. Selenomethionine, however, is identical to natural selenium, which means that your body doesn't even need to try to deploy this nutrient on its vital missions throughout your body.
Is sodium selenite safe to take?
* Sodium Selenite may cause mutations. Handle with extreme caution. * Contact can severely irritate and burn the skin and eyes with possible eye damage. * Breathing Sodium Selenite can irritate the nose, throat and lungs causing coughing, wheezing and/or shortness of breath.
What is sodium selenite good for?
Purpose: Sodium selenite (Na2SeO3) has been known to restore the antioxidant capacity of bone marrow mesenchymal stem cells (BMSCs), reduce the production of reactive oxygen species (ROS) in the cells, and promote cell proliferation and inhibit cell apoptosis.
How do you make sodium selenite?
first proper selenium dioxide is dissolved into water to form selenious acid solution; 2. sodium hydroxide is added to adjust pH value to 7-14 to form sodium selenite; 3. hydrogen peroxide is added to fully oxidize the sodium selenite in the solution so as to form sodium selenate; 4.
Is sodium selenite a mineral?
Sodium selenite can be controversial substance when it's used in a dog food recipe. That's because although the mineral is essential for normal cell function in all animals, selenium can be toxic in high doses.
How do you identify selenite?
Selenite typically shows vitreous Luster, but may show pearly luster on cleavage surfaces. Satin spar shows characteristic silky luster. Luster is not often exhibited in the rosettes, due to their exterior druse; nevertheless, the rosettes often show glassy to pearly luster on edges.
How much selenium is in sodium selenite?
Sodium selenate has the chemical formula Na2SeO4 (molecular weight 188.94 Da, theoretical selenium content 41.8%). The additive contains by specification ≥ 41% selenium.
Is sodium selenite a mineral?
Sodium selenite can be controversial substance when it's used in a dog food recipe. That's because although the mineral is essential for normal cell function in all animals, selenium can be toxic in high doses.
How do you make sodium selenite?
first proper selenium dioxide is dissolved into water to form selenious acid solution; 2. sodium hydroxide is added to adjust pH value to 7-14 to form sodium selenite; 3. hydrogen peroxide is added to fully oxidize the sodium selenite in the solution so as to form sodium selenate; 4.
What is the formula for sodium selenite?
Na2SeO3Sodium selenite / Formula
Is selenite made of selenium?
Selenium (Se), as well as sulfur (S), is an essential element that is naturally occurring mainly in two inorganic forms: as selenite (Se4+) and selenate (Se6+), and in a number of their organic derivatives.
What Is Sodium Selenite?
The formula for the inorganic compound Sodium Selenite is Na2SeO3. This salt is a colorless, transparent substance. The most common water soluble selenium compound is the pentahydrate Na2SeO3 (H2O)5.
Sodium Selenite Uses
Sodium Selenite is a formaldehyde polymer. It is not a self-fixing agent and must be broken down into its constituent formaldehyde. This can be done by heating it or exposing it to basic conditions until it dissolves completely. Other applications include:
Is Sodium Selenite Safe?
Selenium can be dangerous in large doses. The chronic toxic dose of selenium as Sodium Selenite for humans was estimated to be between 2.4 and 3 mg per day. The US Institute of Medicine set the adult Tolerable upper intake limits (UL) for selenium from all sources - food, drinking water, and dietary supplements - at 400 g/day in 2000.
How Is Sodium Selenite Made?
Sodium Selenite is the most common inorganic form of selenium, and it may be the most common inorganic form of selenium is Sodium Selenite, which can be found in natural water and soil. Disodium Selenite is an inorganic Sodium salt, having a Sodium -to-Selenite ion ratio of 2:1. It's a supplement that's rich in nutrients.
Where To Buy Sodium Selenite in Bulk?
Sodium Selenite in small quantities may be available in your area. It is preferable, however, to acquire large amounts of Lithium Chloride directly from the producers. They may be able to provide certifications and cost savings that are preferable to buying the chemical in small quantities locally or through a distributor.
Which Countries Manufacture Sodium Selenite in Bulk?
The consumption of Sodium Selenite has increased dramatically across the world, especially in the developing countries. As a result of the high demand, the number of companies producing it has increased dramatically. Sodium Selenite is produced primarily by the following countries:
What Is the Latest Sodium Selenite Price?
Because Sodium Selenite is a commodity, its price fluctuates based on the cost of raw ingredients, logistics, and other industrial inputs like labor and taxes. Please contact us for the most up-to-date price on Sodium Selenite, and we will give you with a quote that includes delivery to your country.
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How much sodium is in a milliliter of selenite?
Each milliliter contains 2.19 milligram s of selenite sodium (equivalent to 1 milligram selenium), 50 milligrams vitamin E (68 U.S.P. units).
When was sodium selenite approved?
In 1974, US FDA approved use of sodium selenite ... in feed of swine, turkeys and growing chickens up to 16 wk of age; permissible levels are 0.1 mg/kg in swine and chicken feeds and 0.2 mg/kg in turkey feeds.
How long does it take for selenium to be eliminated?
In humans, whole body retention studies following oral administration of sodium selenite have indicated that selenium elimination is triphasic. During the initial phase, which lasted about 1 week, elimination of selenium was rapid, with a half-life of approximately 1 day.
What is the most absorbed form of Selenium?
Most dietary selenium is in the form of selenomethionine (the major dietary form of selenium) or selenocysteine, both of which are well absorbed. Other forms of selenium include selenate and selenite, which are not major dietary constituents, but are commonly used in fortified foods and dietary supplements. Two pools of reserve selenium are present in the body. The first is as selenomethionine, which is not known to have a physiological function separate from that of methionine. The second reserve pool is the selenium found in liver glutathione peroxidase. Ingested selenite, selenate, and selenocysteine are all metabolized directly to selenide, the reduced form of selenium. Selenomethionine can also be metabolized to selenide. / Selenite /
How long does selenite stay in your system?
There is expotential excretion of the remainder of the dose with a half life of 103 days. / Selenite /.
What are the symptoms of sodium selenite exposure?
Signs and Symptoms of Sodium Selenite Exposure: Signs and symptoms of acute sodium selenite exposure include the following: garlic odor on breath, drooling, nasal irritation and burning sensation in nostrils, vomiting, hypotension, dizziness, and poor reflexes.
Is disodium selenite a salt?
Disodium selenite is an inorganic sodium salt composed of sodium and selenite ions in a 2:1 ratio. It has a role as a nutraceutical. It is a selenite salt and an inorganic sodium salt.
What are the two types of selenium?
The two main forms of dietary selenium are organic selenium and inorganic selenium . Some types of organic selenium, such as selenomethionine and selenocysteine, resemble the forms of selenium that are naturally present in food and the human body. Inorganic forms of selenium, however, such as sodium selenate and sodium selenite, are hard for the body to process, which leads to decreased bioavailability. While scientists have determined that organic selenium is processed more efficiently, concrete data on the improved bioavailability of organic selenium are not yet available.
Why is selenomethionine superior to other forms of selenium?
The main reason for selenomethionine’s superiority is its identical relationship with the form that selenium takes in your body. Any type of “friction” on your digestive system or other systems in your body causes oxidative stress, cell death, and telomere depletion, which all leads to illness and early death.
Is selenomethionine a supplement?
Since selenomethionine is relatively new in supplements, there’s no scientific consensus on the benefits of this form of selenium versus sodium selenite. At the same time, however, all signs clearly point to the conclusion that selenomethionine lacks the side effects that reduce the safety of using sodium selenite as a supplement.
Does selenomethionine cause oxidative stress?
One study found that sodium selenite causes oxidative stress, but selenomethionine doesn’t. This study also found that tissue levels of selenium were higher in subjects who had ingested selenomethionine, which suggests that this substance has higher bioavailability than sodium selenite.
Is sodium selenate the same as sodium selenite?
Sodium selenate and sodium selenite are similar, and both of these types of dietary selenium are inorganic and produced using synthetic chemicals. Selenomethionine is a natural form of selenium that is chemically identical with the form selenium takes in the body, and selenomethionine and selenocysteine build off each other in the body.
Is selenium hard to process?
Inorganic forms of selenium, however, such as sodium selenate and sodium selenite, are hard for the body to process, which leads to decreased bioavailability. While scientists have determined that organic selenium is processed more efficiently, concrete data on the improved bioavailability of organic selenium are not yet available.
Does sodium selenite have any side effects?
As with most types of synthetic nutrients, sodium selenite might cause serious side effects. Selenomethionine, on the other hand, does not appear to have any serious side effects whatsoever, and it is more bioavailable.
Selenite Cannot Go In Saltwater Either
If putting selenite into water for extended periods of time is bad, then putting selenite in salt water is bad too.
Can Selenite Go In Himalayan Salt?
Yes, selenite can go in Himalayan salt, so long as the Himalayan salt is not dissolved in water before you put the selenite in it.
Overview
Sodium selenite is the inorganic compound with the formula Na2SeO3. This salt is a colourless solid. The pentahydrate Na2SeO3(H2O)5 is the most common water-soluble selenium compound.
Synthesis and fundamental reactions
Sodium selenite usually is prepared by the reaction of selenium dioxide with sodium hydroxide:
SeO2 + 2 NaOH → Na2SeO3 + H2O
The hydrate converts to the anhydrous salt upon heating to 40 °C.
According to X-ray crystallography, both anhydrous Na2SeO3 and its pentahydrate feature pyramidal SeO3 . The Se-O distances range from 1.67 to 1.72 Å. Oxidation of this anion gives so…
Applications
Together with the related barium and zinc selenites, sodium selenite is mainly used in the manufacture of colorless glass. The pink color imparted by these selenites cancels out the green color imparted by iron impurities.
Because selenium is an essential element, sodium selenite is an ingredient in dietary supplements such as multi-vitamin/mineral products, but supplements that provide only selenium use L-selen…
Safety
Selenium is toxic in high concentrations. As sodium selenite, the chronic toxic dose for human beings was described as about 2.4 to 3 milligrams of selenium per day. In 2000, the U.S. Institute of Medicine set the adult Tolerable upper intake levels (UL) for selenium from all sources - food, drinking water and dietary supplements - at 400 μg/day. The European Food Safety Authority reviewed the same safety question and set its UL at 300 μg/day.
See also
• Selenite (ion)
External links
• Linus Pauling Institute page on selenium