Green Chemistry is the design of chemical products and process that reduce or eliminate the use of toxic substances.
Simply, Green Chemistry has Twelve Principles as follows:
1) Prevention : It is better to prevent waste
2) Atom Economy
3) Less Hazardous Chemical Synthesis
4) Designing safer Chemicals
5) Use of renewable feedstock
6) Safer Solvents & Auxiliary
7) Designing safer Chemicals
8) Design for Energy Efficiency
9) Reduce Derivatives
10)Use of catalysis
11) Catalytic Reagent
12) Designing of Degrading Products
Green Chemistry 