T-shirt - cyanotype - toxic?

[OMU]

Hello,
I have made a t-shirt for my grandson with a picture of him made in cyanotype.

And now there is an important question, could it be toxic or harmful for my grandson to use the shirt?

 

[Loris Medici]

Absolutely not. Prussian Blue is totally harmless... It's used orally for heavy metal poisoning.

 

[Gerald C Koch]

Prussian Blue is also responsible for the color of blue jeans.

 

[ambaker]

Having survived being liberally painted with Prussian Blue, as part of a Navy "Blue Nose" initiation for crossing the arctic circle, I can attest that there are no ill effects.

Stains for days yes, illness no.

 

[Tom1956]

Seems like first time you washed it, it would be ruined, imo.

 

[heterolysis]

You can liberate hydrogen cyanide from Prussian blue...but the chemicals you'd need to do so would be more dangerous to him than the cyanide itself

 

[OMU]

Thanks