This work was carried out to investigate the chemical properties of the chelate compounds which were produced with 2-methoxy-5-nitrophenol(MNG) and metal salt such as copper nitrate and manganese nitrate. And obtained results were as in the followings. 1) The binding ratio of the chelate compounds formation were determined by using the molar ratio concentration method and their chemical structures were identified by IR-spectrum. 2) In the absorbance measuring, 2-methoxy-5-nitrophenol coordinated with manganese and copper showed the maximum absorbance at $430 mmu$ and $410 mmu$ respectively. 3) The binding ratio of chelated compounds were measured by molar ratio method and continuous variation method with spectrophotometer, which was identified as 1:2. 4) The conditional formation constant(log Kn value) of manganese and copper chelate compounds were 6.70, 6.75, respectively according to the equation of $logfrac{A-AMcirc n MNG}{AMm MNG-A}=n log (Mcirc)+log Kn$ 5) The dissociations degree of manganese and copper chelate compound were $2, 300{ imes} 10^{-7}$, $2, 346{ imes} 10^{-7}$ respectively according to the molar calculation method.