PY 129 – irgazin yellow

Especially suited for metallic automotive finishes

Manufacturer/ product code:  Kremer / 23330
Chemical Description:  azomethine copper complex
Color: yellow
Color Index: PY 129
Date:  from 1972

PY 129 – Irgazin Yellow is a synthetic organic pigment belonging to the monoazo diarylide family, widely recognized for its bright, slightly reddish yellow hue, high chromatic purity, and excellent lightfastness. Developed for both artistic and industrial applications, PY 129 offers strong color intensity, reliable opacity, and chemical stability, making it suitable for a wide range of media.

Chemically, PY 129 is based on a diarylide structure, which consists of two aromatic rings linked by an azo (-N=N-) group. This molecular framework provides outstanding resistance to light, heat, and solvents, ensuring the pigment’s stability in coatings, plastics, printing inks, and fine art materials. Its chemical robustness allows it to maintain color integrity over long periods, even under demanding conditions.

In practical applications, Irgazin Yellow exhibits high tinting strength and semi-opaque to opaque behavior, depending on particle size and formulation. It mixes cleanly with other yellows, reds, and earth tones to produce a broad palette of warm hues, from bright golden yellows to soft oranges and muted shades. Its transparency allows for subtle glazing and layering effects in oil, acrylic, and watercolor painting, while its opacity ensures strong coverage in industrial paints and coatings.

From a conservation standpoint, PY 129 is chemically inert and highly lightfast, making it suitable for long-lasting artistic and industrial applications.