Discussion about the Gradation Rule of Density for Organic Homologs Sun Yukun, Sun Ruiming # (Department of Chemistry,Hainan Teachers College, Haikou 571158) (# Department of Chemistry, Hebei Normal Universitry, Shijiazhuang 050016) Abstract In this paper, study on homologs linear rules in organic chemistry have been discussed, especially some of the mathematical mistakes occurred in the the literatures. Key words Organic homologs Density, Gradation rule, Discussion 有机同系物密度递变规律及有关问题的讨论 孙玉坤 孙睿鸣# (海南师范学院化学系 海口 571158 #河北师范大学化学系 石家庄 050016) 摘要 简述了同系线性规律研究的概况，指出了在《有机同系物密度递变规律》等文章中存在的数学原理错误。 关键词 有机同系物密度 递变规律 讨论 孙玉坤 男，58 岁，教授，主要从事有机化合物同系线性规律研究。 海南省教育厅资助项目(HjKj200015) (PDF全文下载c04059)