A Vinegaroon Experiment in Progress

[Gosut]

Mine is headed that way. The orange is a ring around the top. When I gently shook it this evening, there was a rain of white precipitate from the top. Interesting, the plastic 2 liter soft drink bottle has the sides bending inwards, as though the air at the top is less Temperature is about the same as yesterday, as is the barometric pressure.. My assumption is this is some sort of oxidation. Whatever it is, it's combining with something in the air.

[Littlef]

18 minutes ago, Gosut said:

Mine is headed that way. The orange is a ring around the top. When I gently shook it this evening, there was a rain of white precipitate from the top. Interesting, the plastic 2 liter soft drink bottle has the sides bending inwards, as though the air at the top is less Temperature is about the same as yesterday, as is the barometric pressure.. My assumption is this is some sort of oxidation. Whatever it is, it's combining with something in the air.

The one thing I've read is that you shouldn't shake it, stir it...agitate it, cause that's just adding oxygen to rust the iron.   - but it still works, even when there's a rusty solute.

[Gosut]

Was surprised to find the orange ring is gone this morning. The liquid is still pale yellow, cloudy with a white precipitate. There is white precipitate at the bottom. The bottle showed more bending inwards, but it's also about 30° F / 17° C cooler. It seems to imply a change to maybe ferric acetate, but then to something else. Since most of the things in the bottle are iron, acetic acid, water, and oxygen, whatever is going on has to involve iron, carbon, hydrogen, and oxygen. That limits the possibilities.

Though not part of the experiment, I did neutralize the free acetic acid in the test strip. Also discovered the black color bleeds. Since it's a test strip, need to just let it soak in water to see if it reaches a point where the bleeding stops, and, if so, if the leather is any less black.