https://calendar.dallasmakerspace.org/events/view/23518
New cyanotype class! We’ll learn everything from mixing our own solutions, editing files in photoshop, and exposing our images with negatives. See you in class!
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Love to see new classes being developed especially ones with some connection to chemistry. Excited to see how this turns out.
I also just wanted to check with you to confirm that you are using a formulation without hexavalent chromium. I know that the traditional formulation uses potassium dichromate which is probably a bit nastier than we want to do at DMS.
As far as I am aware the original recipe only called for a soultion of Potassium ferricyanide
Ferric ammonium citrate. We wont be fixing or toning in this class.
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Ahh okay, if you aren’t doing a fixing step then everything should be fine. The dichromate is typically used for that. The chemicals you listed are not considered hazardous.
More Info: https://www.cdc.gov/niosh/hhe/reports/pdfs/81-171-880.pdf