Pigments are generally not soluble in water, oil, or other common solvents.. Our Products Pigment Green 7 and Violet 23 can be used in Paints Industry due to their stability.
Pigments are applied to a surface as a mixture that always consists of at least two parts (the pigment itself and the vehicle) and usually many more components.
One of the simplest paints that you imagine, then, might consist of red iron oxide, linseed oil (the vehicle), and turpentine (the thinner).
The purpose of the vehicle in this mixture is to carry the pigment onto the surface, much as motor vehicles carry people and goods. A thinner is often needed because many vehicles are thick, viscous (sticky) materials that are difficult to apply with a brush.