De or het nicotinevrij?

The correct Dutch article is:

de nicotinevrij

Rule Words ending in -ij and -erij: usually de. See the rule

How to use nicotinevrij

the nicotinevrijde nicotinevrij
this nicotinevrijdeze nicotinevrij
that nicotinevrijdie nicotinevrij
our nicotinevrijonze nicotinevrij
your nicotinevrijjouw nicotinevrij
every nicotinevrijelke nicotinevrij
which nicotinevrij?welke nicotinevrij?
a big nicotinevrij / the big nicotinevrijeen grote nicotinevrij, de grote nicotinevrij