Create deep, rich Prussian blue prints with Pure Potassium Ferricyanide (99.62%), the key chemical component of the cyanotype process. At Cyanoprints.com, we supply only professional-grade, high-purity potassium ferricyanide to ensure sharp, consistent, and long-lasting results for artists, photographers, and educators alike.
What is Potassium Ferricyanide?
Potassium Ferricyanide (K₃[Fe(CN)₆]) is a light-sensitive iron salt essential for the cyanotype process. When combined with Ferric Ammonium Citrate Green (15%), it forms a photosensitive emulsion. Once applied to paper or fabric and exposed to UV light, the chemicals react to create the characteristic deep-blue cyanotype image.
Key features of our Potassium Ferricyanide 99.62%
- Prophoto Grade (99.62%) – exceptionally pure for even chemical reactions.
- Fully soluble – dissolves easily in distilled water without residue.
- Versatile use – suitable for paper, cotton fabric, textiles, and mixed media.
- Flexible quantities – available from 100 g up to 1 kg.
- Safe packaging – supplied in resealable containers with clear labelling.
How to use Potassium Ferricyanide in cyanotype
- Dissolve the potassium ferricyanide crystals in distilled water.
- Prepare a separate solution of ferric ammonium citrate.
- Mix the two solutions in equal proportions immediately before use.
- Apply evenly to your chosen surface using a foam brush.
- Allow to dry in a dark, ventilated space.
- Expose under sunlight or a UV lamp, then rinse thoroughly with water to reveal your blueprint.
Creative applications
Our potassium ferricyanide is trusted by:
- Artists & printmakers – for experimental blueprints on paper and canvas.
- Photographers – for alternative photographic printing and digital negatives.
- Educators – safe enough for classroom workshops with basic precautions.
- Textile designers – for printing on cotton, linen, and other absorbent fabrics.
Tips for best results
For sharper detail and longer-lasting prints, we recommend using:
- Clairefontaine Aquapad 300g paper – premium watercolour paper with excellent absorption.
- UV plexiglass plates – ensures flat contact during exposure.
- Nitrile gloves – protect your hands while mixing and coating.
Storage and safety information
Potassium ferricyanide is safe to use in the cyanotype process when handled properly:
- Always wear protective gloves and avoid inhalation of dust.
- Store in a cool, dry, and dark place away from direct sunlight.
- Keep out of reach of children and pets.
- Do not expose to strong acids or temperatures above 300°C.
Frequently Asked Questions (FAQ)
What does "Prophoto Grade 99.62%" mean?
It refers to the purity level of the chemical. At 99.62%, this potassium ferricyanide is exceptionally pure, ensuring stable and predictable reactions.
How much solution can I prepare with 100 g?
With 100 g, you can prepare enough solution to coat approximately 40–50 A4 sheets, depending on coating thickness.
Can I use this chemical for textiles?
Yes, potassium ferricyanide is excellent for use on cotton and linen. Ensure the fabric is pre-washed for optimal results.
Is potassium ferricyanide safe?
Yes, when handled correctly. Avoid contact with acids and wear gloves during preparation and coating.
What should I combine this product with?
It must be combined with Ferric Ammonium Citrate Green 15% to prepare a photosensitive cyanotype emulsion.
