Primary Blue

When used with cement only for interior use. Do not treat with hydrochloric acid.

Color: blue, CI: PB 15:1.74160

Chemical description: Copper phthalocyanine, EC No.: 205-685-1

Lightfastness: Concentrated: 8, Medium: 8, Thinned: 8 (1 is poor, 8 is best).

Stable in Acid: 5, Alkali: 5, Lime: 5 (1 is poor, 5 is best).

Suitability: Oil, Acrylics, Tempera, Watercolor / Gouache, Lime / Fresco, Cement, Retouching, Tadelakt