Ketchup is an acidic paste.
acid
I would assume it is an acid because tomatoes are an acidic fruit.
Ketchup is an acid
There are references to acid in Ketchup, Formic acid and Acetic acid (vinegar) The acidity of Ketchup is between 3.89 and 3.92, but it is not harmful.
Vinegar is an acid. It is between 2 and 3 on the pH scale.
The level of acid in ketchup (catsup) mainly depends on the amount of vinegar (acetic acid) used, the other major constituents being tomato solids, sweeteners, salt, and spices. The pH normally varies from 3.89 to 3.92 for commercial brands. Originally the term ketchup was applied to condiments with a base of mushrooms or even walnuts. Modern ketchup uses ripe tomatoes, which increases the thickness over ketchup made with unripened tomatoes.
yes
Because ketchup has acid.
true
Yes, tomato ketchup contains quite a bit of acid.
Ketchup does not need to be frozen. Tomatoes have acid in them. This acid prevents bacteria from forming. Ketchup does not even need to be refrigerated. But to answer the question, yes you can.
You probably have a sore throat and ketchup is somewhat acid to enhance its taste.