Ultramarine Blue

Name:
Ultramarine Blue
Detailed information:
(CI 77007).

Properties:

Inorganic pigment, blue powder, good alkali and heat resistance, low hiding power, poor acid resistance, poor outdoor durability. Noncombustible.

Derivation:

Heating a mixture of sulfur, clay, alkali, and a reducing agent to high temperatures.

Use:

Colorant for machinery and toy enamels, white baking enamels, printing inks, rubber products, soaps and laundry blues, cosmetics, textile printing.

Note: Used in very low percentages to intensify whiteness of white enamels, rubber compounds, laundered clothing, etc. by offsetting yellowish undertones, gives a “blue” rather than a “yellow” white.