Derivative Spectrophotometric Methods for the Analysis and Stability Studies of Colistin Sulphate

Table 3

, , and values for the degradation of colistin sulphate at room temperature in different pH values.

pH	min^−1	min
2.2–7.4	0.0028	247.50	37.50
8	0.0050	138.60	21.00
9	0.0079	87.70	13.30
10	0.0115	60.30	9.13
11	0.0200	34.65	5.25