(–)-Menthol yog soluble hauv cov kuab tshuaj organic xws li ethanol, DMSO, thiab dimethyl formamide (DMF). … (–)-Menthol muaj solubility ntawm kwv yees li 0.33 mg / ml hauv 1: 2 tov ethanol: PBS (pH 7.2) siv txoj kev no.
menthol yaj hauv dab tsi?
Menthol yog tau los ntawm kev tso cov roj distilled mus rau qhov kub ntawm -22ºC los ntawm kev pab los ntawm kev sib tov khov; menthol crystallizes tawm hauv satiny crystals. Lawv yaj nkag mus rau hauv cawv lossis roj tseem ceeb, thiab lawv tuaj yeem yaj rau hauv dej lossis roj ntawm lawv qhov chaw melting ntawm 111.2ºF.
Yuav ua li cas cov tshuaj soluble hauv ethanol?
Lub ncov qaumteb qabteb ntawm pawg hydroxyl ua rau ethanol yaj ntau ionic compounds, tshwj xeeb sodium thiab potassium hydroxides, magnesium chloride, calcium chloride, ammonium chloride, ammonium bromide, thiab sodium bromide. Sodium thiab potassium chlorides yog me ntsis soluble hauv ethanol.
YYuav ua li cas yog qhov solubility ntawm menthol hauv dej?
Racemic menthol muaj qhov taw qhia ntawm 31-35 ° C thiab kub ntawm 216 ° C. Nws tsis yooj yim soluble hauv dej (0.400 mg / l), txawm li cas los xij nws tau yooj yim soluble hauv ntau cov kuab tshuaj organic xws li cawv, ethers, thiab lwm yam..
YPuas yog menthol yog Terpenoid?
Menthol yog a cyclic monoterpene cawvuas muaj cov yam ntxwv ua kom txias txias thiab muaj qhov seem minty tsw ntawm cov roj seem uas nws tau txais. Vim cov nocwj pwm nws yog ib qho tseem ceeb tshaj plaws flavoring additives dua li vanilla thiab citrus.
