Rublev Colours Dry Pigment – Cadmium Orange (PO20) 100g is a brilliant, high-chroma orange made from cadmium zinc sulfoselenide (cadmium sulfoselenide; CdS/CdSe). Produced by co-precipitating cadmium and selenium compounds and then calcining at high temperature to form a partially crystalline structure, this pigment delivers the classic cadmium look: strong opacity, excellent tinting power, and outstanding permanence.

Cadmium Orange was developed to provide stable orange-to-red shades where earlier pigments struggled with fading or weakness. It disperses well, produces clean mixtures, and is valued anywhere you need a reliable, saturated orange—from traditional oil painting to custom paint making and coloured grounds.

Why artists choose it

• Colour Index: Pigment Orange 20 (PO20)

• Lightfastness: ASTM I in acrylic, oil, and watercolour systems

• Handling: moderate oil absorption (useful for grinding into oil paint)

• Durability: strong permanence, high opacity and tinting strength

• Heat stability: suitable for processes requiring higher temperature resistance (within safe handling practices)

Best uses

• Grinding into oil paint, making watercolour/gouache, acrylic dispersion, casein/tempera, printmaking inks, and other binder systems where a permanent, opaque orange is required.

Health & safety (important): Contains a cadmium compound and is classified by International Agency for Research on Cancer as probably carcinogenic to humans by inhalation. Avoid breathing dust/mists/spray, do not sand dried films, and keep out of reach of children. Use good ventilation, gloves, and a properly fitted respirator when handling dry powder. Conforms to ASTM D-4236.