In this research, the effect of the age in young eucalyptus trees (in ages of 6, 8 and 10 years) on
chemical compounds, for use in pulp and paper industry was studied. Chemical compounds for each age, have
been repeated three times and the amount of hemicelluloses, cellulose, lignin, extractives and ash for 6 years
old have been obtained relatively 27, 38, 18, 2 and 0.76, for 8 years old have been obtained 21, 42, 22, 4 and
0.65 and for 10 years old have been obtained 16, 46, 24, 5, 0.43, respectively. These compounds in several
ages have been compared with each other and the results show those 10 years old tree woods because of
higher amount of cellulose and lower amount of ash can be more suitable choice for pulp industry.
