Synthesis and Characterization of O-Acetyl-chitosan Acetic Ester

Table 1

Solubility of chitosan (CS) and O-acetyl-chitosan acetic ester (ACHA) in different solvents at 25 ± 0.5°C.^a

Sample	CS	ACHA
Solvent	Solubility (mg/mL)
Normal saline, 0.9% (w/v)	—	227 ± 4.23
Benzalkonium bromide	—	121 ± 2.82
Ethanediol	—	25.71 ± 0.82
Isopropyl alcohol	—	15.15 ± 0.76
Deionized water	—	240 ± 5.33
Acetic acid, 1% (w/v)	102 ± 2.2	220 ± 3.19
Sodium hydroxide, 1% (w/v)	—	—

^aValues represent mean ± S.D., . “—” means insoluble.