Rabin’s White House

Ultramarine blue is a synthetic inorganic pigment with a vibrant, deep blue color, composed of a sodium aluminum silicate structure containing sulfur. It is insoluble in water, stable in alkali and light, but reactive to acid, which releases hydrogen sulfide gas. Known for its lightfastness and versatility, it’s used in paints, coatings, plastics, and cosmetics due to its rich hue and durability.