Collocations for hazardous - adj.

be, prove
become
consider sth

extremely, fairly, very, etc.
particularly
potentially
the burning of potentially hazardous medical waste

environmentally
environmentally hazardous substances

for
These conditions are very hazardous for shipping.

to
chemicals that are hazardous to human beings

Hazardous is used with these nouns:
cargo, chemical, condition, enterprise, journey, material, occupation, pesticide, pollutant, situation, stretch, substance, task, undertaking, waste