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近百年来,化学积累了丰富的资料,化合物数目以越来越快的速度在急剧增长。已知化合物总数,1880年仅有1200种;1940年增至50万种;1972年猛增至600万种。预计每年合成15万种新化合物。到现在应有化合物总数近800万种。大量化学事实的涌现、社会的需要,以及量子理论、新的物理实验方法和电子计算机的应用,使古老的化学从形式到内容都在改观并处于急剧变
Over the past century, the chemical has accumulated a wealth of information, the number of compounds at a faster and faster rate of rapid growth. The total number of compounds known is only 1200 in 1880; 500,000 in 1940; and 6 million in 1972. It is estimated that 150,000 new compounds will be synthesized each year. Nearly 8 million compounds should now be available. The emergence of a large number of chemical facts, social needs, as well as the application of quantum theory, new physical experimental methods and electronic computers, have changed and changed the ancient chemistry from the form to the content