"Safe" in what sense?Thermochromicity is not, in and of itself, a hazard. A material might be thermochromic and explosive, or thermochromic and toxic, or thermochromic and flammable ... or might be none of those things.
paint
it doesnt work
Advantages of thermochromic materials, otherwise known as transition lenses, include the convenience of not having to switch to prescription sunglasses. A disadvantage would be not transitioning completely to a transparent state, or being too opaque.
thermochromic advantages
Mixing the thermochromic pigment with paint in the ratio of 20%~25%.
mood rings, and food storages are commonly used with thermochromic paints.
I don't believe thermochromic paper is made, there is a dye, ink or paint. No paper. And u are going to soak paper in a chemical?
There are a few potential issues with irreversible thermochromic labeling when transporting items. If the temperature changes too much, the irreversible thermochromic label could fade or become unreadable. If the temperature gets too hot, the irreversible thermochromic label could melt or become distorted. If the temperature gets too cold, the irreversible thermochromic label could crack or become brittle.
No
it is used in simple tanks
Thermochromic pigments can change colour when at specific temperaturesPros: relatively accurate measurement of temperatureCons: not very durable after a short period of time