I have allergies, to lots of things and they cause allergic asthma. I don't use a special ventilation or respiratory mask, I only use dust mask when mixing chemicals. I said this so you know I have sensitivity and which chemicals irritate the most for me. But I had no problems in the dark room ever. You should see a doctor, in my opinion. You should check if you are suffering from allergies, or other respiratory problems.
Anyway, be careful with the Ferric amonium citrate and tartaric acid in powder form. Even though I like the smell of tartaric acid, those powders are very fine (I hope that is the right term) and 'citrate' as you can imagine irritates the most. It is like sniffing black pepper, sneezing and mildly uncomfortable in the nose. Citric acid I used was in crystal form, I guess yours might be same. If that is in powder form be careful about that too. Not that any of these chemicals are very harmful but as I said my allergies are triggered if I am not careful with these, so I guess these are mildly irritant. When preparing ID-11 use a mask when mixing the powder, it is also very fine powder and I feel uncomfortable when I prepare that. I had no problems with any of the chemicals in your list. Don't forget to respect the silver nitrate
But I believe after you mix the chemicals into solutions they won't be too much trouble. You will use plain hypo (I gather you are going to do VanDyke), and it is not as irritant as the rapid fixers containing extra sulfates and acid. Sodium bisulfate and metabisulfate really irritated me when I used it for other chemical preparations. They smell nasty and they gave a slight burning sensation in the nose.
And warning for the future, considering that you are sensitive to chemicals, be very very careful with bichromates/dichromates they are the most harmful chemicals in powder form, relatively safe in solutions. I have severe allergies to chrome, but I can mix and use it safely. No problems so far (no dermatitis). Not to mention I use gloves and mask.
I hope it all goes well.
Last edited by Herzeleid; 09-01-2012 at 02:13 PM. Click to view previous post history.