Department of Cgemistry College of Life sciences CHRI gwalior-MP India

Email:-sunita71bhargava@gmail.com

Chemists have used their knowledge and skill to prepare a large number of new materials which are far better and more useful than the natural products, such as high-tech polymers, liquid crystals, tough ceramics, nonlinear optical substances, novel electronics, designer drugs, genetic materials and new energy sources. The term Green Chemistry was coined in 1991 by Anastas. The purpose is to design chemicals and chemical processes that will be less harmful to human health and environment. Green chemistry protects the environment, not by cleaning up, but by inventing new chemical processes that do not pollute. Green chemistry seeks to reduce pollution at source, whereas environmental chemistry focuses on the study of pollutant chemicals and their effect on nature. Designing Safer Chemicals: Newproducts can be designed that are inherently safer for the target application. Safer Solvents and Auxilliaries: Solvents are extensively used in most of the syntheses. Use of RenewableFeedstocks Chemical transformations should be designed to utilize raw materials and feedstocks that are renewable, but technically and economically practicable. Use of Catalyst: Catalysts are used in small amounts and can carry out a single reaction many times and so are preferable to stoichiometric reagents, which are used in excess and work only once. They can enhance the selectivity of a reaction, reduce the temperature of a transformation, reduce reagentbased waste and potentially avoid unwanted side reactions leading to a clean technology. The values and positive impact of green chemistry to tomorrow’s in different fields