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近百年来,对液体物理常数与分子結构的經驗规律的研究者很多,其中較早的是Kopp的关于沸点克分子容积的研究。他所得的結果,总結来說,是认为沸点克分子容积具有加和性,即可以由原子的沸点克分子容积加起来而获得化合物的沸点克分子容积。Sugden关于表面张力的研究获得了更丰富的成果。他所确立的常数等张比容亦具有加和性,且与分子结构有密切关系。由等张比容的討論,可以对許多有机物的結构問題提供重要的旁証。在Sugden以后,对液体的加和性常数提出者更多。粘度是液体的最重要的物理常数之一,研究者特别多。其中包括Souders的粘度常数I=M(lglgη+2.9)/D及Friend
Nearly a hundred years, the laws of liquid physics constants and molecular structure of the law of many researchers, of which earlier is Kopp’s boiling point molecular volume study. In conclusion, he concluded that the boiling point molecular volume is considered additive, that is, the boiling point molecular volume of the compound can be obtained from the boiling molecular volume of the atom. Sugden’s research on surface tension has yielded richer results. The constant isotactic constant that he established is also additive and closely related to the molecular structure. The discussion of isotonic specific volume can provide important evidence of the structural problems of many organic compounds. After Sugden, the additive constants of liquids are proposed more. Viscosity is one of the most important physical constants of liquids and is of particular interest to researchers. These include the viscosity constant of Souders I = M (lglgη + 2.9) / D and Friend