用红外吸收光谱法测定了环烷酸在四氯化碳中单分子(HA)和二聚分子(H_2A_2)的克分子消光系数分别为 ε_1(1776cm~(-1))=(1.72±0.09)×10~2 ε_2(1728cm~(-1))=(1.05±0.02)×10~3 环烷酸在四氯化碳中的二聚常数及其与仲辛醇的缔合常数为 K_2=(H_2A_2)_0/(HA)_0~2=(2.3±0.2)×10~2升/克分子 K_(缔合)=(HA·ROH)_0/(HA)_0(ROH)_0=(3.9±0.3)×10~1升/克分子 The molecular extinction coefficients of single molecule (HA) and dimeric molecule (H_2A_2) of naphthenic acid in carbon tetrachloride were determined by infrared absorption spectroscopy as ε_1 (1776cm -1) = (1.72 ± 0.09) × 10 2 ε 2 (1728 cm -1) = (1.05 ± 0.02) × 10 -3 The dimerization constant of naphthenic acid in carbon tetrachloride and its association constant with 2-octanol are K 2 = ( H 2 A 2) _0 / (HA) _0 ~ 2 = (2.3 ± 0.2) × 10 ~ 2 L / mol K_ (association) = (HA · ROH) _0 / (HA) _0 (ROH) _0 = (3.9 ± 0.3 ) × 10 ~ 1 L / mol