1. Properties
| Red, yellow and black are colors which have iron oxide as the main component. It has excellent light stability and durability and its special feature is the fact that there are no changes in hue. It also has excellent pigment properties such as tinting strength, masking power and dispersibility. |
1-1. Black Iron Oxide (Iron Black)
Iron black is a black iron oxide that occurs naturally as a magnetic iron ore called magnetite and is represent by Fe3O4 or FeOFe2O3.
The allowable temperature limits are such that at 180 - 400°C, it converts to brown gamma ferric oxide, and at 500 - 600°C to red alpha ferric oxide. |
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1-2. Yellow Iron Oxide (Yellow iron)
| Yellow iron oxide is a hydroxide occurring naturally as an ore called goethite and is a represented by FeOOH or Fe2O3·H2O. It is also called ochre and at temperatures in the vicinity of 180°C, it separates comparatively easily and converts to Fe2O3 . |
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1-3. Red Iron Oxide (Bengal)
Bengal is red-brown pigment that has iron oxide as its main component (Fe2O3 ) and it is thought to originate from a natural iron oxide based red brown pigment material that comes from Bengal in India.
The hues range from yellow to violet and this depends of the size of the grains. It is chemically stable at temperatures 1200°C. |
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2. Uses
It may be used for paints, inks, rubbers, plastics, concrete , asphalt, or cosmetics, or paper depending on the conditions for use. |
Chrome oxide1. Properties
| Chrome oxide is a green powder represented by Cr2O3 and the color changes depending on the size and distribution of the particles, but generally speaking the color is brighter when the particle diameter is large while tinting strength is greater when the particle diameter is small. |
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2. Uses
2-1. For Colorants
| As described above, because chrome oxide has very excellent properties as a pigment, in can be used both indoors and outdoors, and can also be used in general-use paint, heat resistant, acid resistant, and alkali resistant paints, inks, cement colorants, and ceramics. |
2-2. For Abrasives
| Chromium oxide that has been subjected to high temperature treatment and milled has a high degree of hardness, and thus can be used in material grinding, finish grinding, metal grinding, high accuracy grinding and the like. |
2-3. For the Ceramic Industry
| Aside from being used as a colorant for glass, because of its high melting point and extremely high chemical stability, it is also used as bricks etc. in refractories. |
Titanium Oxide1. Properties
| Due to its excellent functionality, titanium oxide is not only used for coloring, but it also improves ultraviolet ray shielding when made into fine particles. By taking advantage of its photocatalytic properties, it may also be used as for deodorizing and sterilizing. It currently is being used as an environment-friendly material and it expected that it will receive more attention in the future. |
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2. Uses
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Titanium oxide is a typical white pigment and is widely used in a wide range of fields including paints, inks, chemical fibers and paper making. White cars, white household appliances and white paper are very common and continue to increase demand for titanium oxide. It is also used in cosmetics such foundation, and so it can be said that titanium oxide plays a role in our everyday lives. |
Carbon Black1. Properties
| Carbon black is a solid that is in the form of powder or grains. It is formed by incomplete combustion of decomposition of organic substances (hydrocarbons). |
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2. Uses
Carbon black is widely used due to its excellent color, shielding properties, staining strength and color fastness.
Carbon black products are largely divided into to those for rubber use and those not for rubber use.
Those for rubber use are further divided into those for color use, dry battery use, and conduction use.
Those for rubber use are mostly for automobile tires. In the non-rubber category, carbon black used for color is mostly for inks, paints and plastics and about half is used for plastics. Use in conduction has been expanding and use in electronic part transport containers, copier toner, connector, and conductive paints have been expanding as manufacturers have been placing emphasis on these fields.
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Ultramarine Blue1. Properties
| Ultramarine blue is a bright blue pigment that has been known for a long time. Originally, it was a natural substance contained in lazurite, but these days it is all manufactured artificially. |
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2. Uses
| Ultramarine blue has a wide range of uses. It is used in coloring such as ink, paints, painting materials, synthetic resins. In addition to obvious use for its bright blue, it is also used for the effect of improving white color level or black color level. It is also often used in bluing material. |
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In addition, to blue, ultramarine blue that has been converted to violet, rose, and pink, is widely used in cosmetics. Its high level of safety is also a noteworthy point.
Currently, ultramarine blue development is being carried out to impart new functions by hybridization with other materials so that it can be used as more than just a colorant. |
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Stationery 
Spin dyeing 
Metal ink 
Pigment printing
