What's the plural form of phthalaldehyde? Here's the word you're looking for.
Answer
The noun phthalaldehyde can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be phthalaldehyde.
However, in more specific contexts, the plural form can also be phthalaldehydes e.g. in reference to various types of phthalaldehydes
or a collection of phthalaldehydes.
