← Back to variante (Bleach dye - tannic acid)

Cyanotype / Bleach dye - tannic acid

REF #30

Grey brown Grey yellow Grey green Black Brown

Ferric Ammonium Citrate [NH4]{y}[Fe{x}(C6H4O7)] sol. 20%

Potassium Ferricyanid K3[Fe(CN)6] sol. 8%

Bleach NaOCl sol. 3.7%

Tannic acid C76H52O46 sol. 3%

365nm

Operating procedure

1. Make a basic cyanotype (5 mins), do not dry
2. Dip in diluted bleach for 10 seconds
3. Wash for 1 minute
4. Dip in tannic acid for 1 minute
5. Wash 3 times for 30 seconds
6. Leave to dry

Consignes de sécurité

Corrosive product: Handle with nitrile gloves and safety goggles.

Beware of bleach vapours. Never mix with a base.