Nature of stress | Storage conditions | Time (h) | Amount of pheniramine | Amount of naphazoline hydrochloride | Extent of decomposition |
---|---|---|---|---|---|
Remaining ± SD (%) | Remaining ± SD (%) | ||||
5 M HCl | 40°C | 24 | 95.5 ± 0.9(PP = 999.213) | 78.5 ± 3.8(PP = 999.412) | Substantial |
5 M NaOH | 40°C | 2 | 65.3 ± 1.4(PP = 999.346) | 44.9 ± 2.6(PP = 999.015) | Substantial |
6% H2O2 | 40°C | 24 | 84.9 ± 1.6(PP = 999.803) | 76.0 ± 1.5(PP = 999.711) | Substantial |
Thermal | 40°C | 120 | 98.2 ± 1.6(PP = 999.872) | 102.5 ± 1.0(PP = 999.784) | None |
40°C | 240 | 99.1 ± 1.3(PP = 999.423) | 94.3 ± 1.2(PP = 999.651) | Substantial | |
Dry heat | 105°C | 7 | 99.2 ± 2.9(PP = 999.903) | 68.4 ± 1.9(PP = 999.806) | Substantial |
Photolytic | 1.2 million lux hours and 200 W h/m2 | 98.2 ± 1.7(PP = 999.312) | 98.5 ± 1.2(PP = 999.104) | None |