The environmental legislation contained in the Pollution Prevention Act of 1990 set the stage for green chemistry. Environmental concerns in research and industry are increasing with more and more pressure to reduce the number of pollutants produced. Green chemistry, environmentally benign chemistry and sustainable chemistry involve the design of chemical products and processes that eliminates the use and generation of hazardous substances. So, instead of limiting risk by controlling our exposure to hazardous chemicals, green chemistry attempts to reduce and preferentially eliminate the hazard thus negating the necessity to control exposure
