Indonesia as an agricultural country has many resources of cellulose.One of the potential cellulose resources is banana pseudo stem that usually discarded as agricultural waste.This research was carried out to characterize the films of carboxymethyl cellulose (CMC) that synthesized from pseudo banana stem.The CMC was prepared according to our previous method.The pseudo stem was dried,ground to pass 20 mesh screen,extracted using 8% NaOH at 100 oC for 3.5 h,and then bleached using 5% of NaOCl at 30 oC for 3 h.The cellulose was alkalized using NaOH at 5-30% at 25 oC for 1 h.