23-03-2022, 07:02 AM
(22-03-2022, 06:47 PM)Olive Wrote: Bluebags! I remember them for bee stings. I wonder what was in them, something alkaline, perhaps baking soda. Am I right to think that washing soda was a thing? What was it?Baking soda, sodium bicarbonate NaHCO3; washing soda, sodium carbonate Na2CO3. Blue bag was ferric ferrocyanide- Prussian Blue dye.
I do have other cameras!