What does green chemistry mean? Which country first put forward this slogan?

Green chemistry is a multidisciplinary research field that emerged in 1990s. It can be interpreted as environmentally friendly chemistry, and its core connotation is to minimize or completely eliminate the use and production of harmful substances in the reaction process and chemical production.

The slogan of green chemistry originated in the United States, where the chemical industry is very developed. 1990, the United States passed the "Pollution Prevention Action" Act. 199 1 year later, "green chemistry" was put forward by the American Chemical Society (ACS) and became the central slogan of the US Environmental Protection Agency (EPA). After more than ten years of research and exploration, researchers of green chemistry have summed up the principle of 12 green chemistry, which can be used as a guide and standard for experimental chemists to formulate and evaluate whether a synthetic route, a production process or a compound is green.