Peppermint oil as colorless or light yellow clear liquid. It has a special cool scent, fresh and cool after taste. Is the fragrant herbs and seasoning drugs and carminative. Can be applied to the skin or mucous membranes to produce a cool feeling to relieve discomfort and pain. The other is the liver qi, gallbladder. Mainly used for chronic calculous cholecystitis, chronic cholecystitis and gallstones liver stagnation, stomach damp heat stagnation
Peppermint oil as colorless or light yellow clear liquid. It has a special cool scent, fresh and cool after taste. Store for a long time, color gradient deep. This product can be mixed with ethanol, chloroform or ether. The relative density is 0.888 ~ 0.908 (Appendix VII A). Optical rotation to take this product, according to the determination of (Appendix VII E), optical rotation should be 17 degrees to 24 degrees. Refractive index should be 1.456 ~ 1.466 (Appendix VII F). The relative molecular mass is 153.27 and the melting point is 42-44 DEG C.
[identification] to take this product with 3 ~ 1 drops, 5 drops of sulfuric acid and vanillin crystal amount should be explicit and orange red, plus 1 drops, is purple.
Solubility: peppermint oil and ethanol, chloroform or ether can be miscible. Menthol is easily dissolved in ethanol, chloroform, ether, liquid paraffin or volatile oil, soluble in water.
The amount of ester containing about 5g of it, accurately weighed, flask, and neutral ethanol (of phenolphthalein indicator solution was neutral) 10ml after mixing with phenolphthalein indicator drops 2 drops, first with 0.1mol/L ethanol solution of potassium hydroxide and free acid, then add ethanol potassium hydroxide titration solution precision (0.5mol /L 25ml). Cool on the water bath reflux after 1 hours, add phenolphthalein solution 0.5ml, titrated with hydrochloric acid solution (0.5mol/L) titration residual potassium hydroxide, and titration with blank test correction results, i.e.. The potassium hydroxide solution (0.5mol/L) per 1ml of ethanol is equivalent to 99.15mg acetate mint (C12H22O2).
The ester content of this product should be 2 ~ 6.5% (g/g) by acetic acid Mint ester (C12H22O2). The total amount of alcohol acetylation to take this product 10ml, the acetylation of acetic anhydride and 10ml bottle, add new melting of anhydrous sodium acetate 2G with air reflux condenser, at 145 - 3 Deg. C oil bath heating for 75 minutes, put the cold, 50ml water, on the water bath, constantly shaking and heating 15 minutes, put the cold. Displacement of the separatory funnel, remove the lower acid. In case of oil left acetylation followed by a saturated solution of sodium chloride and sodium carbonate in saturated saturated solution of sodium chloride and sodium chloride saturated solution by washing 1 times, each time about 50ml, then washed with water, each about 50ml, to the solution on phenolphthalein was neutral until liquid. The acetylation of 25ml oil flask, adding anhydrous sodium sulfate 3G, plug, and always shake to dehydration, to take 1 drops of acetylated oil into carbon disulfide does not occur in 10 drops of turbidity, and then dry the filter paper filtration.
The drying of acetylated oil saponification of about 2.5G, precision said, the 250ml conical flask, precision plus ethanol KOH titration solution (0.5mol/L) 50ml, as the ester containing the amount of tested items from "on the water bath reflux after 1 hours", according to the operation, consumption of hydrochloric acid titration solution to acetylated oil (0.5mol/L) amount (ML) as A, blank hydrochloric acid titration solution (0.5mol/L) consumption amount (ML) as B, according to the following formula, i.e..
(B-A) * 0.07815 E
The total amount of alcohol -- - (x = 1-0.2119 X - x 100%)
W- (B-A) * 0.02102100
In the formula, W is the weight of acetylated oil (g); E is the test product, and the ester content.
The total alcohol content of this product shall not be less than 50% (g/g) by menthol (C10H20O).
[action] Aromatic Medicine, seasoning drugs and carminative. Can be applied to the skin or mucous membranes to produce a cool feeling to relieve discomfort and pain.
The other is the liver qi, gallbladder. Mainly used for chronic calculous cholecystitis, chronic cholecystitis and gallstones liver stagnation, stomach damp heat stagnation. (see "Shu Shu Capsule")
[usage] oral, once 0.02 ~ 0.2ml, 0.06 to 0.6ml a day. For proper use.
[storage] shading, sealed, cool place.
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