Thermochromic Leuco Dye

TMC Hallcrest manufactures a range of Thermochromic products using Leuco Dye technologies. These supplied in a variety of forms under their brand names Chromazone (reversible) and Kromagen (permanent). We mix numerous Leuco Dyes with colour developers and a series of fatty acids, esters and alcohols that each have defined melt points to provide a range of materials that respond to different temperatures producing a variety of colours.

These products all change colour over a temperature range specific to their formulation providing a simple cost effective method of monitoring temperature.


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Product Information

Temperature range

Colour Change



+44 1244 818348

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+44 1244 818348

Find a