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