ZHANG Run-rong, YE Xue-feng, GAO Jin, et al. Investigation of Preparation Process of Fengtongling Plaster and Its Determination of Methyl Salicylate[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(13): 27-30.
ZHANG Run-rong, YE Xue-feng, GAO Jin, et al. Investigation of Preparation Process of Fengtongling Plaster and Its Determination of Methyl Salicylate[J]. Chinese journal of experimental traditional medical formulae, 2016, 22(13): 27-30. DOI: 10.13422/j.cnki.syfjx.2016130027.
Objective: To optimize molding process of Fengtongling plaster and develop GC for assay of methyl salicylate in this preparation. Method: Orthogonal test was adopted to optimize molding technology of Fengtongling plaster with melting point
gloss
hardness and smooth as indexes.The content of methyl salicylate was determined by GC
chromatographic conditions was PEG-20M column (0.25 mm×30 m
0.25 μm)
split ratio was 50:1. Result: The best proportion of paraffin wax
beeswax
white petrolatum and lanolin were 4%
6%
5% and 3%
respectively
liquid temperature was 65-75℃.Three batches of products conformed standards of the 2010 edition of Chinese Pharmacopoeia on ointments.The linear range of methyl salicylate was 0.66-13.25 g·L-1
average recovery was 98.94% with RSD of 0.7%. Conclusion: This optimized molding process is feasible and stable
this determination method is simple
rapid and accurate for quality control of Fengtongling plaster.