Home / Colours & Pigments / Pigments & Dry Goods / Yellow Pigments / 43500 Cobalt Yellow (Aureolin) Kremer Pigment, 20g jar 43500 Cobalt Yellow (Aureolin) Kremer Pigment, 20g jar £7.00 £8.40 (inc. VAT) Cobalt Yellow, Aureolin. Transparent yellow particularly common in the watercolour artists palette. Add to your Wish List Information Chemical Description Artificial Mineral Pigment from Cobalt Salts and Potassium Nitrate. 2K3(Co(NO2)6) 3H2O;Pigment Yellow 40. Colour Index Py40.77357 Opacity Transparent Suitability Acrylics, Oil, Ceramic, Tempera, Watercolour / Gouache Specifications Brand: Kremer Product Code: UK 3213.90.00 Weight: 0.12kg