boehmite which is the by-product in alcohol process contains anions such as $Cl^-,{NO_3}^-.or; CH_3COO^-$ Influe-nce of these anions was studied on properties of $alpha$-alumina powders prepared by treating the transformed ${gamma}$-alumina with the alumina sol and $alpha$-alumina seeds (d_{50}=0.36mu extrm{m}$) Disperal 20/1 and 10/1 containing $Cl^-$ produced spherical powder Disperal 20/2 with ${NO_3}^-$ produced equiaxed powder and Disperal 10/3 with $CH_3$ $COO^-$ irregular shaped and sized powder. All of these $alpha$-alumina powders were submicron. Although the green density of the alumina powder derived from Disperal 10/1 by calcination at $1200^{circ}C$/1h. was 53% it did not sinter even at $1550^{circ}C$ for 2h. which implies that its d50 is greater than $3mu extrm{m}$. The others gave green densities in the range of 44~47% but they sintered as well as the AKP-30 at $1500^{circ}C$/2 h or $1550^{circ}C$/2 h.