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HYDRATED SILICA

HYDRATED SILICA

CAS NO: 10279-57-9
EC/LIST NO: 600-358-3

Hydrated silica is a form of silicon dioxide, which has a variable amount of water in the formula. 
When dissolved in water it is usually known as silicic acid. 
Hydrated silica is found in nature, as opal (which has been mined as a gemstone for centuries), and in the cell walls of diatoms. 
Hydrated silica is also manufactured for use in toothpaste. Hydrated silica can be dehydrated to produce silica gel[citation needed], which is used as a desiccant. 
Hydrated silica is also used in various paints and varnishes and in the production of beer.

Depending on the specific material and formulation, hydrated silica can be used as a thickener for gel toothpaste, a mild abrasive for cleaning or as a whitening agent in toothpaste.

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Silica is crystalline as it occurs in nature. Sand and obsidian are common forms. 
The sand is heated with sodium carbonate and dissolved in water to form liquid sodium silicate. 
The liquid sodium silicate is mixed with acid and precipitated to make hydrated silica, which is an odorless, tasteless white powder. 
The hydrated silica is then milled, and based on the particle size of the material can be used for a variety of different applications.

Hydrated silica comes from a hydrated form of silicon. 
Did you know that silica is a substance that makes up a large part of the Earth's crust? 
The most common form of silica you may be familiar with is sand! 
But the hydrated version of silica is a substance used in many everyday items, like a coating to paper and textiles. 
You're also very likely to find this ingredient in your bathroom's medicine cabinet in some of your everyday products. 
Hydrated silica is a common ingredient found in many personal care products, including cosmetics and toothpaste. 
Hydrated silica an abrasive, an absorbent, and a bulking agent in personal care product formulas and is perfectly safe to use in toothpaste.

The primary benefit of hydrated silica in toothpaste is its abrasiveness. 
Stains often settle on our enamel, the outermost layer of our teeth. 
Some kinds of toothpaste will whiten teeth with bleaching agents, such as hydrogen peroxide, which changes your enamel color. 
But whitening toothpaste with abrasive ingredients, such as hydrated silica, scrub the stains from the surface of your teeth.

The other useful quality of hydrated silica's abrasiveness is its cleaning ability. 
Our mouths are full of bacteria, which, when mixed with the foods and drink we ingest, can lead to dental plaque (biofilm). 
If you brush your teeth twice daily with a clinically proven toothpaste, you should be able to keep plaque at bay. 
However, when dental plaque isn't scrubbed away and begins to build up on your teeth, it can become a harder substance, known as tartar. 
You can't clean away tartar on your own, and because of its porousness, it will become an easy substance for even more plaque to adhere to. 
Only a dental professional can get rid of your tartar! 
Plaque and tartar contribute to tooth decay and gum disease, which is why it's vital to stop their buildup as soon as you can.
Brush twice a day and clean between your teeth once a day with floss, an interdental brush, or another interdental cleaning device.

Silica, also called silicone dioxide, and Hydrated Silica are minerals. 
The Silica used in cosmetics and personal care products is amorphous Silica. 
This means that the Silica has no definite form.
Crystalline silica, which has a specific arrangement of the atoms, is not used in cosmetics and personal care products.

Hydrated Silica has additional water atoms bound to Silica. 
Other silica compounds that may be used in cosmetic products include Alumina Magnesium Metasilicate, Aluminum Calcium Sodium Silicate, Aluminum Iron Silicates and Sodium Potassium Aluminum Silicate. 
Silica and Hydrated Silica are used in a wide range of cosmetics and personal care products including bath products, eye makeup, hair care products, makeup, nail care products, oral hygiene products and skin care products.

Hydrated silica is naturally derived from silica (silicon dioxide), an abundant compound that forms about 12 percent of the earth's surface.


Hydrated silica is an odourless white powder derived from silica (silicon dioxide), an abundant compound found in around the world in quartz, sand and obsidian. 
Hydrated silica has mild abrasive properties, and can be used in toothpaste to assist with whitening and the removal of plaque.


Hydrated Silica is a form of silicon dioxide, which has a variable amount of water in the formula. 
Hydrated silica is also known as silicic acid, a term usually used for its form dissolved in water. 
Hydrated silica is found in nature, as opal, which has been mined as a gemstone for centuries and in the cell walls of diatoms. 
Hydrated silica is also manufactured for use in toothpaste. 
Once dehydrated the gel is used as a dessicant known as Silica Gel. 
Hydrated silica is also used in various paints and varnishes and in the production of beer.

A jelly-like semi-solid material composed of hydrated silicon dioxide. 
Hydrated silica, or Silicic acid, is prepared by acidifying a solution of Sodium silicate. 
When dried, hydrated silica forms amorphous lumps that are called Silica gel. 
Hydrated silica is used for paper and textile coatings.

Hydrated silica is naturally derived from silicon dioxide, this compound can be found in abundance on the Earth's outer surface.

Hydrated Silica is mainly use in our products as hair volumizer. 
Hydrated silica is basically used to temporarily add volume, body, and shine to thin or flat hair. 
Usually the person using a volimizer product must flip the head downward and gradually blow dry the hair, with the air being blown along the shaft of the hair until the hair is dry. 
Drying the hair in this position will increase volume and achieve the desired effect.

Hydrated Silica (English name Hydrated Silica; Silicondioxidehydrate), also known as white carbon black , also known as light silica, the main component is silica, white amorphous powder. 
Light Loose, soluble in caustic and hydrofluoric acid, insoluble in water, solvents and acids (except hydrofluoric acid). 
High temperature, nonflammable, tasteless, odorless, with good electrical insulation. 
Hydrated Silica  performance is similar to carbon black , but it is white.The molecular formula and the structural formula can be represented by SiO2 · 
nH2O, where nH2O is present as a surface hydroxyl group. 


Hydrated Silica macroscopic structure is similar to carbon black, the particles are spherical, single particles between the surface contact, was chain-like structure (secondary structure). 
Chain structure and hydrogen bond force to form a group of aggregates. 
The original particles are very fine, absorb moisture in the air to form aggregated fine particles. 
Silica particles on the surface of hydroxyl particles, mainly isolated hydroxyl, adjacent hydroxyl, silicon three  
Wherein the adsorption of polar groups from adjacent hydroxyl groups is important. 
The presence of these groups makes the silica surface has a strong hydrophilic, surface area and dispersion capacity are large, mechanical strength and tear resistance are high. High temperature does not decompose, high insulation, with small particles, large surface area, high structural characteristics. 
Mainly used for the rubber industry excellent light reinforcing agent, lubricants, insulation materials. 
Can be dilute sodium silicate solution and dilute hydrochloric acid reaction system.


Hydrated silica is found in a variety of Martian deposits within suites of minerals that indicate aqueous alteration, mostly because hydrated silica forms easily in different environments. 
Because of its relative ubiquity on Mars, it makes a good tracer mineral to compare otherwise dissimilar deposits and relate their relative degrees of aqueous alteration. 
The first portion of this dissertation uses near-infrared and thermal-infrared spectroscopy to determine the relative degree of crystallinity of hydrated silica and the bulk SiO2 abundance of hydrated-silica-bearing surfaces. 
This analysis reveals that Martian hydrated silicas exhibit a range of crystalline structures, from noncrystalline (opal-A or hydrated glass) to crystalline (quartz), implying a range in the maturity of these silica deposits. 
However, bulk SiO2 abundances show less diversity, with most Martian silica deposits having relatively low SiO2 abundances, similar to a basaltic andesitic composition that exists over much of the surface and that suggests little interaction with water. 
The second portion of this dissertation focuses on one location that contains the only detected quartz on the planet. 
High-resolution satellite imagery and thermal and near-infrared spectroscopy is used to construct a geologic history of these deposits and their local context. 
The quartz-bearing deposits are consistently found co-located with hydrated silica, and this spatial coherence suggests that the quartz formed as a diagenetic product of amorphous silica, rather than as a primary igneous mineral. 
Diagenetic quartz is a mature alteration product of hydrated amorphous silica, and indicates more persistent water and/or higher temperatures at this site. 
There is also spectral evidence for smectites beneath the silica-bearing rocks, in the lowermost exposed Noachian-aged breccia. 
A similar stratigraphic sequence -- smectite-bearing breccias beneath deposits containing minerals indicating a greater degree of alteration -- has also been found at nearby exposures at Nili Fossae and Toro Crater, suggesting a widespread sequence of alteration. 
The two sections of this dissertation provide a global and in-depth view of Martian hydrated silica deposits, thereby broadening and refining our search for past water on Mars.


Silica is crystalline as it occurs naturally all over the planet, sand and obsidian are some more common forms. 
The sand is heated along with sodium carbonate and dissolved in water to form liquid sodium silicate. 

The liquid sodium silicate is mixed with acid and precipitated to make hydrated silica, which is an odorless, tasteless white powder. 
The hydrated silica is then milled in the United States, and based on the particle size of the material, can be used for a variety of different applications.

Silica is crystalline as it occurs in nature. 
Sand and obsidian are common forms. 
The sand is heated with sodium carbonate and dissolved in water to form liquid sodium silicate. 
The liquid sodium silicate is mixed with acid and precipitated to make hydrated silica, which is an odorless, tasteless white powder. 
The hydrated silica is then milled in the U.S., and based on the particle size of the material, can be used for a variety of different applications.


Chemical Formula: SiO2 · nH2O

1 SiO2 + 1 H2O → H2SiO3
1 SiO2 + 2 H2O → H4SiO4 [also known as Si(OH)4]
2 SiO2 + 1 H2O → H2Si2O5
2 SiO2 + 3 H2O → H6Si2O7
3 SiO2 + 2 H2O → H4Si3O8
3 SiO2 + 4 H2O → H8Si3O10
4 SiO2 + 1 H2O → H2Si4O9


Diatomaceous earth, originally mined as "tooth powder" is a naturally occurring hydrated silica. 
As a fine gel abrasive, frequently combined with softer calcium carbonate (from chalk) it helps to remove plaque. 
Milled to a slightly larger size, the grains are more aggressive and are used in tooth bleaching formulations

Hydrated Silica is a mild gel abrasive, which, when combined with calcium carbonate (from chalk) helps to remove plaque. 
Milled to a slightly larger size, the grains are more abrasive and will help to whiten teeth.

Hydrated silica is the abrasive used in gel toothpastes, or in the clear portion of striped toothpastes. 
Hydrated Silica is often used in opaque toothpastes as well, as a secondary abrasive.

When dried in an oven, hydrated silica looses the water, and becomes a dessicant, a substance that attracts water from the air. 
You find little packets of "silica gel" crystals in containers whose contents will be damaged by condensing moisture, such as vitamin bottles, consumer electronics, pepperoni, or leather products.

Silica gel can be made by reacting an acid with sodium silicate (sold in drug stores as "water glass" or "egg keep", and used to paint eggs to seal them from air, preventing spoilage). 
Drying the resulting gel will get the dessicant, or it can be used wet in toothpastes.

You can find sodium silicate in the colorful "Magic Rocks" seen in gift shops at museums. 
The dry form is mixed with salts of various metals. 
When you drop them in water, the sodium is replaced by the metal. 
The resulting metallic silicate is not soluble in water, and has a color characteristic of the metal (e.g. copper is blue). 
The metallic silicate is also a gel, so it expands, and grows into colorful stalagmites in the water.


IUPAC NAME:
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SYNONYMS:

Hydrated silica

Q5954337

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