The answer depends in part on your application. Also, 'best' in what sense?
Formaldehyde is a very effective preservative for biological specimens, but is not suitable as a food preservative if you intend to eat the food, as it is quite toxic.
Copper compounds are excellent wood preservatives, but are also quite toxic.
If you are looking for a non toxic food preservative, try salt or vinegar!
Vinegar would be the best preservative. You can also use a little bit of salt or even lemon as preservative. Sugar syrup can also be used as a preservative if you want your sauce to be sweet.
yes
iodine
It is difficult to say "the best"; but salt is a good preservative.
aseptic water discovered by a Japanese man.
no it's not a preservative
The answer depends in part on your application. Also, 'best' in what sense? Formaldehyde is a very effective preservative for biological specimens, but is not suitable as a food preservative if you intend to eat the food, as it is quite toxic. Copper compounds are excellent wood preservatives, but are also quite toxic. If you are looking for a non toxic food preservative, try salt or vinegar!
Vitamin E or Grapefruit Oil
Salt is a natural preservative.
Preservative is a noun.
Yes it is. lemon juice is a natural preservative
Preservative 220 is sulphur dioxide