Cyanotype is a historical photographic technique that’s become popular again among creatives, artists, and photographers. But one question frequently arises: is cyanotype toxic? In this article, we explore what cyanotype is made of, how to use it safely, and how to avoid unnecessary exposure while still enjoying the creative process.
🧪 What chemicals are used in cyanotype?
The cyanotype process uses two key chemicals:
- Ferric Ammonium Citrate
- Potassium Ferricyanide
When combined and exposed to UV light, these compounds produce a deep blue image — the signature look of cyanotype printing.
☠️ Are these chemicals toxic?
On their own, both substances are relatively low-risk when used properly. Here’s what you should know:
- Do not ingest either compound in powder or solution form
- Avoid direct skin or eye contact
- Keep away from acids — especially when using potassium ferricyanide, which can release harmful gases in reaction with strong acids (this doesn’t happen in standard cyanotype use)
🧤 How to work safely with cyanotype
Cyanotype is safe as long as you take basic precautions:
- Always wear nitrile gloves
- Apply your emulsion with a clean foam brush
- Work in a well-ventilated area
- Store chemicals out of reach of children or pets
🔬 What do scientists say?
According to available safety data, neither ferric ammonium citrate nor potassium ferricyanide is considered acutely toxic during regular use. They’ve been safely used in educational, artistic, and even photographic environments since the 19th century.
🌿 Is cyanotype safe for kids?
Yes — with adult supervision. If children are involved in a cyanotype workshop or activity, they should always be supervised, wear gloves, and avoid handling powdered chemicals. Pre-mixed emulsions from a starter kit are a great way to work more safely.
✅ Conclusion: Cyanotype is safe with simple precautions
Cyanotype is a safe and accessible technique for creatives of all ages — when used responsibly. With gloves, basic protective habits, and safe storage, you can focus on what matters: making beautiful blueprints on paper, fabric, or even wood.
