Yes, DETERGENTS is a Scrabble word!

Letter values in Scrabble US: D 2, E 1, T 1, E 1, R 1, G 2, E 1, N 1, T 1, S 1.

Is it a valid word?

DETERGENTS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a surface-active chemical widely used in industry and laundering
a cleansing agent that differs from soap but can also emulsify oils and hold dirt in suspension