Hitox Questions and Answers

What is HITOX?

How consistent is HITOX for color and particle size?

What makes it buff colored?

I don’t make that many tan colors. Where can I use HITOX?

What are the best colors for using HITOX?

Is HITOX suitable for exterior applications?

What is the loading of HITOX that can be used for interior/undercoat applications?

How do I enter HITOX in my color computer and my color matching program?

I tested HITOX by replacing all of the white TiO2 pound for pound. Why did I not get the same opacity or color?

What is the temperature stability of HITOX?

When including HITOX into a formulation is it necessary to use additional additives or wetting aids to help disperse or wet out?

Question: What is HITOX?

Answer: HITOX is a unique buff colored 95% titanium dioxide that helps reduce the pigment raw material cost of a formulation. Due to HITOX TiO2’s unique spectral reflectance, a formulator can partially replace the expensive white TiO2 along with the more expensive colorants (organic and inorganic) in colored formulations.

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Question: How consistent is HITOX for color and particle size?

Answer: The specification for HITOX is no greater than 1.5 delta E color difference from the master standard with a median particle diameter of 1.5 micron. The specification for HITOX ULX is no greater than 1.5 delta E color difference from the master standard with a median particle diameter of 0.75 microns.

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Question: What makes it buff colored?

Answer: HITOX pigments contain less than 2% residual iron oxide (Fe2O3) that is naturally bound within the crystal structure. It is inert and non-reactive under normal conditions. It is this residual iron oxide which partially gives HITOX the unique buff color.

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Question: I don’t make that many tan colors. Where can I use HITOX?

Answer: HITOX is most effective in color applications when used as a color pigment to partially replace the white TiO2 and the more expensive colorants. Of the 610 colors in the Federal Standard 595B color fan deck, HITOX offers an economic advantage in 403. HITOX is particularly useful in most blues, greens, yellows, browns and grays. Most formulations containing yellow or red iron oxide along with white TiO2 are ideal candidates for HITOX.

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Question: What are the best colors for using HITOX?

Answer: Most formulations that contain white TiO2 and iron oxides are ideal candidates for incorporating HITOX to save on pigment raw material costs. Formulations that contain this combination along with an organic show the greatest savings.

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Question: Is HITOX suitable for exterior applications?

Answer: Yes, at a 30% total prime pigment loading in paint, HITOX has similar results to a coating not containing HITOX when comparing chalking, weather resistance, and light fastness. HITOX is not surface modified and not recommended to be used as a masstone for exterior color stable applications. HITOX meets ASTM D476-84 Type II and Type III as a chalk resistant rutile pigment.

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Question: What is the loading of HITOX that can be used for interior/undercoat applications?

Answer: For interior/undercoat applications there is no limit on the prime pigment loading of HITOX as long as color and opacity are matched.

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Question: How do I enter HITOX in my color computer and my color matching program?

Answer: HITOX should be entered into the color matching program as a color pigment, and not as a white TiO2. Since HITOX is actually buff in color, it behaves much more like other colored pigments.

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Question: I tested HITOX by replacing all of the white TiO2 pound for pound. Why did I not get the same opacity or color?

Answer: HITOX is a unique buff colored TiO2 and it is not intended as a direct substitute for white titanium dioxide. HITOX can partially replace the white TiO2 and the colored pigments based on the target shade. In saying this, reformulating will be necessary when incorporating HITOX to match color and opacity of an existing formulation.

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Question: What is the temperature stability of HITOX?

Answer: HITOX works well at temperatures below 450 F. At temperatures exceeding 450 F, HITOX, as a masstone, could shift a couple of deltas dark and blue and this could vary with dwell time, pressure, pigment loading, and shear.

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Question: When including HITOX into a formulation is it necessary to use additional additives or wetting aids to help disperse or wet out?

Answer: Additives or wetting aids are NOT necessary to incorporate HITOX into an existing formulation. You can use the same type of additives for HITOX as white TiO2 or Iron Oxide at similar loadings.

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