Table 7.

Volumes of aqueous hydrochloric acid solution, sodium hydroxide solution, and calculated deacetylation degree values obtained for COS_B samples (n = 6).

Sample *	G (g)	VHCl	VNaOH	DD (%)	$\overline{\mathbf{DD}}$ (%)	RSD (%)
1-1	0.50018	18.00	20.00	93.28	92.59	0.53
1-2	0.50022	18.00	20.21	92.23
1-3	0.50038	18.00	20.25	92.00
1-4	0.50001	18.00	20.05	93.07
1-5	0.50051	18.00	20.15	92.48
1-6	0.50042	18.00	20.15	92.49

G: weight of COS_B sample; V_HCl: volume of standard aqueous HCl solution (mL); V_NaOH: volume of standard NaOH aqueous solution (mL); * Moisture value of analyzed samples is 5.8% for COS_B.