Sulfenic acids don't exist in raw onions; they appear as degradation products of alliin only after cutting onions.
acid
lactic
its a alkalis
The acid found in onions is called sulfuric acid.
Yes, there will be no problem.
Sulphonate as it is from the Sulphyde group.
Sulfuric
Onion skin turns red in acid and green in alkali due to the presence of anthocyanin pigments that change color based on the pH of the solution.
What happens is the alcohol starts to shred the onion. Next alcohol is soaked up inside the onion which starts to make the onion shrink. The cell can't take the acid that goes in it shrinks and dissolves.
It is not the strong odor of the onion that makes us cry, but the gas that the onion releases when we sever this member of the lily family. The onion itself contains oil, which contains sulfur, an irritant to both our noses and to our eyes. Cutting an onion arouses a gas contained within the onion, propanethiol S-oxide, which then couples with the enzymes in the onion to emit a passive sulfur compound. When this upwardly mobile gas encounters the water produced by the tear ducts in our eyelids, it produces sulfuric acid. In response to the caustic acid, our eyes automatically blink, and produce tears which irrigate the eye, and which flush out the sulfuric acid. Another reflex to rid the eyes of a foreign substance, that of rubbing our eyes with our hands, often exacerbates the situation, because our hands are coated with the caustic, sulfuric acid producing oil from cutting the onion, which we then rub directly into our eyes. Much to our chagrin, the only remedy for ridding the onion of its pungent, irritating oil is to boil it, not to slice it or dice it.
Onions are usually pickled using a variety of ingredients including vinegar. Vinegar is the common household name for acetic acid.
NO, Sulfur compounds are present in onions. Some sulfur compounds, especially volatile ones can mix with water to form sufuric acid--A strong acid. This is why your eye burns when you cut onion. Acetic acid is vinergar and is a weak acid.