In Chemistry Bases (whether strong or weak) are described as Caustic. So depending on the concentration would be greater than pH 7. When the word Caustic used, it is usually associated with a very high pH typically 12- 14.
Caustic soda, scientifically known as sodium hydroxide, does not have a given pH. pH depends on both the strength of an acid or base and its concentration, meaning how much of it is dissolved in a...