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Huoxiang Zhengqi Water's Ethanol Amount Inspection (Gas Chromatography)
test record
Calibration factor determination: Precisely measure 4ml, 5ml, 6ml of absolute ethanol and place them in 100ml measuring flasks respectively.
Table 19-18 Gas Chromatography Determination of Huoxiang Zhengqi Water Ethanol Amount Correction Factor Test Results
Preparation of the test solution: accurately measure 10ml of this product, place it in a 100ml measuring flask, add 5ml of n-propanol , add water to dilute to the mark, shake well, accurately measure 10ml, place it in a 50ml measuring bottle, add water to dilute to the mark , Shake well, and inject 1ul
Table 19-19 Gas Chromatography Determination of Huoxiang Zhengqi Water Ethanol Amount Test Results
Result: 44%
Standard stipulation: should be 40%~50%
Huoxiang Zhengqi Water's Ethanol Amount Inspection (Distillation Method)
test record
Take the test product, shake well, adjust the temperature to 20℃, accurately measure 25ml, place it in a 250ml separatory funnel, add about 50ml of water, add sodium chloride to saturate it, and extract 3 times with petroleum ether , and divide the lower layer of water.
Balance model: CT225
Unit: g
Measuring method: distillation method
Measuring temperature: 20℃
Weight of empty pycnometer: 11.
Weight of empty pycnometer plus test solution: 20.
Weight of empty pycnometer with water: 21.
Calculation formula
Look up the relative density of the test product in the ethanol relative density table of 0.
Ethanol content (%)=21.
Result: 43%
Standard stipulation: should be 40%~50%
Conclusion: meet the regulations
Related links: Inspection of the total amount of wet itching aerosol spray, inspection of the total number of presses per bottle of Yansukang aerosol