Ultramarine blue 59

Sodium alumino sulphosilicate red-shade ultramarine blue pigment. It has medium tinting strength and shows fastness to heat and light. It is the most resistant pigment to acid attack and should be used in any application where exposure to acids is likely to be severe or prolonged. Also widely used alone to obtain a bright, transparent shade of blue, or in combination with other pigments such as titanium dioxide, with which it gives an attractive pastel shade. Its redness makes it especially useful in absorbing an unwanted yellow undertone to improve the shade of white or transparent articles.