Stress condition

Time

~% Degradation

Acid hydrolysis
(1N HCl,50°C )

24 h

11.2 %

Base hydrolysis
(1N NaOH, 50°C )

24 h

5.3 %

Oxidation (1% H202)

24 h

0.4%

Water hydrolysis (50°C)

24 h

0.5%

Thermal (105°C)

24 h

0.3%

Light  (photolytic
degradation)

10 days

0.2%

Table 7: Forced degradation results.