RED Thermochromic Pigment 2g 31C-87.8F Thermochromic, chromatic or Heat Sensitive pigments come in a variety of colors , temperature ranges and above all product usage. These pigments start to change color from DARK RED to a CLEAR when the temperature reaches 31deg C. Thermochromic pigments can be used to highlight a hot item, screen printed on to mugs, used in the making of Goo, Slime and Puff Slime as well as many crafting ideas. By mixing this pigment into any clear medium you can make a Thermochromic paint Our pigments are currently sold in 22 or 31 degrees and we have over 10 colors to choose from. Non-Toxic inert pigment powders . Safety must come first, remember you are using powders that are as finer than dust. Always wear a mask. Let us help you make your project stand out from the rest with our Color-Changing pigments and paints. Our pigments can be mixed in a variety of mediums from Screen Printing Inks, Art Mediums to Powder coating mediums. Proudly made & packaged in the USA with over 15 years producing UV and GDI paints and pigments, GloMania a name you can trust and rely on. Never short of Stock as we manufacture. FREE shipping, ship out same day, and 100% guarantee all our products.