Description of Cellulose diacetate :

According to the degree of substitution(DS), Cellulose acetate can be commonly classified to cellulose diacetate(DAC) and cellulose triacetate(TAC). Usually, DAC has DS with 2.2-2.5 while TAC has DS with above 2.7.(DS is an average number, It represents the number of -OH which is substituted by -C0CH3)

Usage of  Cellulose diacetate : 

It can be used to make non-woven fabrics for cigarette filters, ink pen refills, water absorbing layers and masks for diapers.