You should keep the commas if you can do the following:
~ insert "and" between the adjectives
or
~ put those adjectives in different order and they still make sense.
If you cannot do either of those things, then you need to keep the commas.
I'm describing the properties of a molecule, and I'm wondering if it's correct to say this -
Physical properties: Fine, white, crystalline, powder
OR should I remove the commas and write -
Physical properties: Fine white crystalline powder
2 answers
Use commas