Ultramarine Blue

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Art Spectrum® Dry Ground Pigment Ultramarine Blue.

This red shade of Ultramarine Blue is a warm bright blue with good tinting strength.

The pigment was synthetically produced by French chemist Guimet in 1828 to replace the expensive natural Lapis Lazuli.

A synthetic inorganic pigment with excellent lightfast properties.

Series Colour Index Chemical Description Classification Opacity ASTM
2 PB29 Polysulfide of Sodium-Alumino-Silicate Synthetic Inorganic Semi  Transparent ASTMI

ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.