Definition: Green Chemistry is utilization of a set principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical product.

Significance of Green chemistry:

1. A novel approach that blends the application of chemistry with economic growth and environmental preservation.
2. To develop strategy for sustainable chemical process industries.
3. Achieve conservation of limited resources through cost effectiveness and pollution prevention.
4. Therefore basic axiom of Green chemistry is to design product and processes that reduce or eliminate the generation of all wastes