Hackspace Proposal
Proposal Type:
- Micro
delete as appropriate
Title:
Cyanotype Chemicals - Potassium Ferricyanide and Ammonium Ferric Citrate
Submission Date:
07/07/17
Current Status:
Approved, ordered 2017-07-21
Proposer:
John Willis
Description:
The Cyanotype Skillshare was very well receivers and I would like to buy a small quantity of the two chemicals; Potassium Ferricyanide, and Ammonium Ferric Citrate (green ), for members to be able to carry out the process in Hackspace. The chemicals are not toxic and the process is safe if carried out with reasonable precautions.
Safety info from Wikipedia
Potassium Ferricyanide
Potassium ferricyanide has low toxicity, its main hazard being that it is a mild irritant to the eyes and skin. However, under very strongly acidic conditions, highly toxic hydrogen cyanide gas is evolved, according to the equation: 6 H+ + [Fe(CN)6]3− → 6 HCN + Fe3+[10] The reaction with hydrochloric acid is as follows: 6 HCl + K3[Fe(CN)6] → 6 HCN + FeCl3 + 3 KCl
Ammonum Ferric Citrate
Budget:
£30
Supplier Wetplate Supplies www.wetplatesupplies.com
100g Potassium Ferricyanide £ 5.49 250g Ammonium Ferric Citrate £19.99 Delivery £ 4.50
Funding source/model:
- full funded by Hackspace
Resources depended upon:
None
Supporters
Member:
Micro proposal
- Tom G
- Jonathan Taphouse
Committee:
- Nick G
- Ian A-S
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