Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Titanium Dioxide shopping experience:

1. Compare - without doubt the biggest advantage that the Titanium Dioxide offers shoppers today is the ability to compare thousands of Titanium Dioxide at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.

2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about

3. Testimonials - don't know anybody that has bought a Titanium Dioxide? Wrong! If the Titanium Dioxide is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.

4. Questions - Got a question about Titanium Dioxide then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....

5. Reputation - Never heard of the company selling Titanium Dioxide? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Titanium Dioxide and build up a picture of their reputation for sales, returns, customer service, delivery etc.

6. Returns - still worried that even after all of the above your Titanium Dioxide wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Titanium Dioxide then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Titanium Dioxide site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Titanium Dioxide, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Titanium Dioxide, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.

{{Chembox new| Name = Titanium dioxide| ImageFile = Titanium(IV)_oxide.jpg| ImageSize = 200px| ImageName = Titanium(IV) oxide| ImageFile1 = Rutile-unit-cell-3D-balls.png| ImageSize1 = 200px| ImageName1 = The unit cell of rutile| IUPACName = Titanium dioxide
Titanium(IV) oxide| OtherNames = Titania
Rutile
Anatase
Brookite| Section1 = {{Chembox Identifiers| CASNo = 13463-67-7| RTECS = XR2775000 --> | Section2 = {{Chembox Properties| Formula = titaniumoxygen2| MolarMass = 79.87 g/mol| Appearance = White solid| Density = 4.23 g/cm3| MeltingPt = 1870 °C (3398 °F)| BoilingPt = 2972 °C (5381.6 °F)| Solvent = other solvents| SolubleOther = Insoluble --> | Section4 = {{Chembox Thermochemistry| DeltaHf = −249 joule/mole (unit)| DeltaHf = −879 joule/mole (unit)| DeltaHf = −944 joule/mole (unit) -->| Section7 = {{Chembox Hazards| EUClass = not listed| NFPA-H = 1| NFPA-F =| NFPA-R =| FlashPt = non-flammable --> | Section8 = {{Chembox Related| OtherCations = Titanium(II) oxide
Titanium(III) oxide
Titanium(III,IV) oxide
Zirconium dioxide
Hafnium dioxide --> -->

Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula titaniumoxygen2. When used as a pigment, it is called titanium white, Pigment White 6, or Colour Index International. It is noteworthy for its wide range of applications, from paint to sunscreen to food colouring.

Natural occurrence Titanium dioxide occurs in four forms:

• rutile, a tetragonal mineral usually of prismatic habit, often twinned;
• anatase or octahedrite, a tetragonal mineral of dipyramidal habit;
• brookite, an orthorhombic mineral. Both anatase and brookite are relatively rare minerals;
• Titanium dioxide (B) or TiO2(B), a monoclinic mineral.

Titanium dioxide occurrences in nature are never pure; it is found with contaminant metals such as iron. The oxides can be mined and serve as a source for commercial titanium. The metal can also be mined from other minerals such as ilmenite or leucoxene ores, or one of the purest forms, rutile beach sand.

Production Crude titanium dioxide is purified via titanium tetrachloride in the Chloride process. In this process, the crude ore (containing at least 90% TiO2) is reduced with carbon, oxidized with chlorine to give titanium tetrachloride. This titanium tetrachloride is distilled, and re-oxidized with oxygen to give pure titanium dioxide.

Another widely used process utilizes ilmenite as the titanium dioxide source, which is digested in sulphuric acid. The by-product iron(II) sulphate is crystallized and filtered-off to yield only the titanium salt in the digestion solution, which is processed further to give pure titanium dioxide.

Applications Titanium dioxide is the most widely used white pigment because of its brightness and very high refractive index (n=2.4), in which it is surpassed only by a List of indices of refraction materials. When deposited as a thin film, its refractive index and colour make it an excellent reflective optical coating for dielectric mirrors and some gemstone, for example "mystic fire topaz". TiO2 is also an effective opacifier in powder form, where it is employed as a pigment to provide whiteness and opacity to products such as paints, coatings, plastics, papers, inks, foods, medicines (i.e. pills and tablets) as well as most toothpastes. Used as a white food coloring, it has E number E171. In Cosmetics and skin care products, titanium dioxide is used both as a pigment and a thickener. It is also used as a tattoo pigment and styptic pencils.

This pigment is used extensively in plastics and other applications for its UV resistant properties where it acts as a UV reflector.

In ceramic glazes titanium dioxide acts as an opacifier and seeds crystal formation. In almost every sunscreen with a physical blocker, titanium dioxide is found both because of its refractive index and its resistance to discolouration under ultraviolet light. This advantage enhances its stability and ability to protect the skin from ultraviolet light. Sunscreens designed for infants or people with sensitive skin are often based on titanium dioxide and/or zinc oxide, as these mineral UV blockers are less likely to cause skin irritation than chemical UV absorber ingredients, such as avobenzone.

Titanium oxide is also used as a semi-conductor.http://prola.aps.org/abstract/PR/v61/i1-2/p56_1

As a photocatalyst Titanium dioxide, particularly in the anatase form, is a photocatalysis under ultraviolet light. Recently it has been found that titanium dioxide, when spiked with nitrogen ions, is also a photocatalyst under visible light. The strong redox of the electron hole oxidizes water to create hydroxyl radicals. It can also oxidize oxygen or organic materials directly. Titanium dioxide is thus added to paints, cements, windows, tiles, or other products for sterilizing, deodorizing and anti-fouling properties and is also used as a hydrolysis catalyst. It is also used in the Graetzel cell, a type of chemical solar cell.

Titanium dioxide has potential for use in energy production: as a photocatalyst, it can

carry out hydrolysis; i.e., break water into hydrogen and oxygen. Were the hydrogen collected, it could be used as a fuel. The efficiency of this process can be greatly improved by doping the oxide with carbon, as described in "Carbon-doped titanium dioxide is an effective photocatalyst" .

produce electricity when in nanoparticle form. Research suggests that by using these nanoparticles to form the pixels of a screen, they generate electricity when transparent and under the influence of light. If subjected to electricity on the other hand, the nanoparticles blacken, forming the basic characteristics of a LCD screen. According to creator Zoran Radivojevic, Nokia has already built a functional 200-by-200-pixel monochromatic screen which is energetically self-sufficient.

As TiO2 is exposed to UV light, it becomes increasingly hydrophilic; thus, it can be used for anti-fogging coatings or self-cleaning windows. TiO2 incorporated into outdoor building materials, such as paving stones in noxer blocks, can substantially reduce concentrations of airborne pollutants such as volatile organic compounds and nitrogen oxides.

For wastewater remediation TiO2 offers great potential as an industrial technology for detoxification or remediation of wastewater due to several factors.

The process occurs under ambient conditions.

The formation of photocyclized intermediate products, unlike direct photolysis techniques, is avoided.

Oxidation of the substrates to CO2 is complete.

The photocatalyst is inexpensive and has a high turnover.

TiO2 can be supported on suitable reactor substrates.

Other applications It is also used in resistance-type lambda probes (a type of oxygen sensor).

Titanium dioxide is what allows osseointegration between an Implant (medicine) and bone.

Titanium dioxide in solution or suspension can be used to cleave protein that contains the amino acid proline at the site where proline is present. This breakthrough in cost-effective protein splitting took place at ASU in 2006.http://pubs.acs.org/cgi-bin/article.cgi/ancham/2007/79/i04/pdf/ac0613737.pdf

Titanium dioxide on silica is being developed as a form of odor control in cat litter. The purchased photocatalyst is vastly cheaper than the purchased silica beads, per usage, and prolongs their effective odor-eliminating life substantially.

The Pilkington Activ glass has a special nano-scale, extremely thin hydrophobic coating of microcrystalline titanium oxide which catalyses the break-down of organic surface contamination by ultraviolet light from the sun.

Historical uses The Vinland map, the map of North America ("Vinland") that was supposedly drawn during mid-15th century based on data from the Viking Age, has been declared a forgery on the basis that the ink on it contains traces of the TiO2-form anatase; TiO2 was not synthetically produced before the 1920s. Recently (1992) a counter-claim has been made that the compound can be formed from ancient ink.

Titanium dioxide white paint was used to paint the Saturn V rocket, which is so far the only rocket that has sent astronauts to the moon. In 2002, a spectral analysis of J002E3, a celestial object, showed that it had titanium dioxide on it, giving evidence it may be a Saturn V S-IVB.

See also

• Noxer, a building material incorporating TiO2.

References

External links

• International Chemical Safety Card 0338
• NIOSH Pocket Guide to Chemical Hazards
• "Fresh doubt over America map", bbc.co.uk, 30 July, 2002
• A description of TiO2 photocatalysis
• "Smog-busting paint soaks up noxious gases", Jenny Hogan, 'newscientist.com, 04 February 2004
• Crystal structures of the three forms of TiO2
• Kutal, C., Serpone, N. (1993). Photosensitive Metal Organic Systems: Mechanistic Principles and Applications. American Chemical Society, Washington D.C
• "Architecture in Italy goes green", Elisabetta Povoledo, International Herald Tribune, November 22, 2006
• "A Concrete Step Toward Cleaner Air", Bruno Giussani, BusinessWeek.com, November 8, 2006

{{Chembox new| Name = Titanium dioxide| ImageFile = Titanium(IV)_oxide.jpg| ImageSize = 200px| ImageName = Titanium(IV) oxide| ImageFile1 = Rutile-unit-cell-3D-balls.png| ImageSize1 = 200px| ImageName1 = The unit cell of rutile| IUPACName = Titanium dioxide
Titanium(IV) oxide| OtherNames = Titania
Rutile
Anatase
Brookite| Section1 = {{Chembox Identifiers| CASNo = 13463-67-7| RTECS = XR2775000 --> | Section2 = {{Chembox Properties| Formula = titaniumoxygen2| MolarMass = 79.87 g/mol| Appearance = White solid| Density = 4.23 g/cm3| MeltingPt = 1870 °C (3398 °F)| BoilingPt = 2972 °C (5381.6 °F)| Solvent = other solvents| SolubleOther = Insoluble --> | Section4 = {{Chembox Thermochemistry| DeltaHf = −249 joule/mole (unit)| DeltaHf = −879 joule/mole (unit)| DeltaHf = −944 joule/mole (unit) -->| Section7 = {{Chembox Hazards| EUClass = not listed| NFPA-H = 1| NFPA-F =| NFPA-R =| FlashPt = non-flammable --> | Section8 = {{Chembox Related| OtherCations = Titanium(II) oxide
Titanium(III) oxide
Titanium(III,IV) oxide
Zirconium dioxide
Hafnium dioxide --> -->

Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula titaniumoxygen2. When used as a pigment, it is called titanium white, Pigment White 6, or Colour Index International. It is noteworthy for its wide range of applications, from paint to sunscreen to food colouring.

Natural occurrence Titanium dioxide occurs in four forms:

• rutile, a tetragonal mineral usually of prismatic habit, often twinned;
• anatase or octahedrite, a tetragonal mineral of dipyramidal habit;
• brookite, an orthorhombic mineral. Both anatase and brookite are relatively rare minerals;
• Titanium dioxide (B) or TiO2(B), a monoclinic mineral.

Titanium dioxide occurrences in nature are never pure; it is found with contaminant metals such as iron. The oxides can be mined and serve as a source for commercial titanium. The metal can also be mined from other minerals such as ilmenite or leucoxene ores, or one of the purest forms, rutile beach sand.

Production Crude titanium dioxide is purified via titanium tetrachloride in the Chloride process. In this process, the crude ore (containing at least 90% TiO2) is reduced with carbon, oxidized with chlorine to give titanium tetrachloride. This titanium tetrachloride is distilled, and re-oxidized with oxygen to give pure titanium dioxide.

Another widely used process utilizes ilmenite as the titanium dioxide source, which is digested in sulphuric acid. The by-product iron(II) sulphate is crystallized and filtered-off to yield only the titanium salt in the digestion solution, which is processed further to give pure titanium dioxide.

Applications Titanium dioxide is the most widely used white pigment because of its brightness and very high refractive index (n=2.4), in which it is surpassed only by a List of indices of refraction materials. When deposited as a thin film, its refractive index and colour make it an excellent reflective optical coating for dielectric mirrors and some gemstone, for example "mystic fire topaz". TiO2 is also an effective opacifier in powder form, where it is employed as a pigment to provide whiteness and opacity to products such as paints, coatings, plastics, papers, inks, foods, medicines (i.e. pills and tablets) as well as most toothpastes. Used as a white food coloring, it has E number E171. In Cosmetics and skin care products, titanium dioxide is used both as a pigment and a thickener. It is also used as a tattoo pigment and styptic pencils.

This pigment is used extensively in plastics and other applications for its UV resistant properties where it acts as a UV reflector.

In ceramic glazes titanium dioxide acts as an opacifier and seeds crystal formation. In almost every sunscreen with a physical blocker, titanium dioxide is found both because of its refractive index and its resistance to discolouration under ultraviolet light. This advantage enhances its stability and ability to protect the skin from ultraviolet light. Sunscreens designed for infants or people with sensitive skin are often based on titanium dioxide and/or zinc oxide, as these mineral UV blockers are less likely to cause skin irritation than chemical UV absorber ingredients, such as avobenzone.

Titanium oxide is also used as a semi-conductor.http://prola.aps.org/abstract/PR/v61/i1-2/p56_1

As a photocatalyst Titanium dioxide, particularly in the anatase form, is a photocatalysis under ultraviolet light. Recently it has been found that titanium dioxide, when spiked with nitrogen ions, is also a photocatalyst under visible light. The strong redox of the electron hole oxidizes water to create hydroxyl radicals. It can also oxidize oxygen or organic materials directly. Titanium dioxide is thus added to paints, cements, windows, tiles, or other products for sterilizing, deodorizing and anti-fouling properties and is also used as a hydrolysis catalyst. It is also used in the Graetzel cell, a type of chemical solar cell.

Titanium dioxide has potential for use in energy production: as a photocatalyst, it can

carry out hydrolysis; i.e., break water into hydrogen and oxygen. Were the hydrogen collected, it could be used as a fuel. The efficiency of this process can be greatly improved by doping the oxide with carbon, as described in "Carbon-doped titanium dioxide is an effective photocatalyst" .

produce electricity when in nanoparticle form. Research suggests that by using these nanoparticles to form the pixels of a screen, they generate electricity when transparent and under the influence of light. If subjected to electricity on the other hand, the nanoparticles blacken, forming the basic characteristics of a LCD screen. According to creator Zoran Radivojevic, Nokia has already built a functional 200-by-200-pixel monochromatic screen which is energetically self-sufficient.

As TiO2 is exposed to UV light, it becomes increasingly hydrophilic; thus, it can be used for anti-fogging coatings or self-cleaning windows. TiO2 incorporated into outdoor building materials, such as paving stones in noxer blocks, can substantially reduce concentrations of airborne pollutants such as volatile organic compounds and nitrogen oxides.

For wastewater remediation TiO2 offers great potential as an industrial technology for detoxification or remediation of wastewater due to several factors.

The process occurs under ambient conditions.

The formation of photocyclized intermediate products, unlike direct photolysis techniques, is avoided.

Oxidation of the substrates to CO2 is complete.

The photocatalyst is inexpensive and has a high turnover.

TiO2 can be supported on suitable reactor substrates.

Other applications It is also used in resistance-type lambda probes (a type of oxygen sensor).

Titanium dioxide is what allows osseointegration between an Implant (medicine) and bone.

Titanium dioxide in solution or suspension can be used to cleave protein that contains the amino acid proline at the site where proline is present. This breakthrough in cost-effective protein splitting took place at ASU in 2006.http://pubs.acs.org/cgi-bin/article.cgi/ancham/2007/79/i04/pdf/ac0613737.pdf

Titanium dioxide on silica is being developed as a form of odor control in cat litter. The purchased photocatalyst is vastly cheaper than the purchased silica beads, per usage, and prolongs their effective odor-eliminating life substantially.

The Pilkington Activ glass has a special nano-scale, extremely thin hydrophobic coating of microcrystalline titanium oxide which catalyses the break-down of organic surface contamination by ultraviolet light from the sun.

Historical uses The Vinland map, the map of North America ("Vinland") that was supposedly drawn during mid-15th century based on data from the Viking Age, has been declared a forgery on the basis that the ink on it contains traces of the TiO2-form anatase; TiO2 was not synthetically produced before the 1920s. Recently (1992) a counter-claim has been made that the compound can be formed from ancient ink.

Titanium dioxide white paint was used to paint the Saturn V rocket, which is so far the only rocket that has sent astronauts to the moon. In 2002, a spectral analysis of J002E3, a celestial object, showed that it had titanium dioxide on it, giving evidence it may be a Saturn V S-IVB.

See also

• Noxer, a building material incorporating TiO2.

References

External links

• International Chemical Safety Card 0338
• NIOSH Pocket Guide to Chemical Hazards
• "Fresh doubt over America map", bbc.co.uk, 30 July, 2002
• A description of TiO2 photocatalysis
• "Smog-busting paint soaks up noxious gases", Jenny Hogan, 'newscientist.com, 04 February 2004
• Crystal structures of the three forms of TiO2
• Kutal, C., Serpone, N. (1993). Photosensitive Metal Organic Systems: Mechanistic Principles and Applications. American Chemical Society, Washington D.C
• "Architecture in Italy goes green", Elisabetta Povoledo, International Herald Tribune, November 22, 2006
• "A Concrete Step Toward Cleaner Air", Bruno Giussani, BusinessWeek.com, November 8, 2006

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TITANIUM DIOXIDE
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