2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol

2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol - Names and Identifiers

Name	2-hydroxy-α,α,4-trimethylcyclohexanemethanol
Synonyms	255-953-7 Citriodiol 42822-86-6 p-Methane-3,8-diol p-Menthane-3,8-diol p-menthane-3,8-diol PARA-MENTHANE-3,8-DIOL 2-Hydroxy-4,α,α-trimethylcyclohexanemethanol 2-hydroxy-α,α,4-trimethylcyclohexanemethanol 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol 2-(2-Hydroxypropan-2-yl)-5-Methylcyclohexanol Cyclohexanol, 2-(2-hydroxy-2-propyl)-5-methyl- 1-(2-Hydroxy-4-methylcyclohexyl)-1-methylethanol 2-(1-hydroxy-1-methylethyl)-5-methylcyclohexanol 2-(2-hydroxypropan-2-yl)-5-methylcyclohexan-1-ol 2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol 2-hydroxy-alpha,alpha,4-trimethylcyclohexanemethanol
CAS	42822-86-6
EINECS	255-953-7
InChI	InChI=1/C10H20O2/c1-7-4-5-8(9(11)6-7)10(2,3)12/h7-9,11-12H,4-6H2,1-3H3

2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol - Physico-chemical Properties

Molecular Formula	C10H20O2
Molar Mass	172.27
Density	1.009±0.06 g/cm3(Predicted)
Melting Point	82-83 °C
Boling Point	267.6±8.0 °C(Predicted)
Flash Point	120.7°C
JECFA Number	1416
Solubility	Chloroform (Slightly), Methanol (Slightly)
Vapor Presure	0.00109mmHg at 25°C
Appearance	Solid
Color	Off-White Low-Melting to Waxy
pKa	15.18±0.29(Predicted)
Storage Condition	Sealed in dry,Room Temperature
Refractive Index	1.486

2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol - Reference Information

FEMA	4053 \| P-MENTHANE-3,8-DIOL
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
overview	Meng diol, also known as p-menthane -3,8-diol, or PMD for short, has been listed in the national catalogue of cosmetic raw materials (2016) and GB2760 catalogue of food additives, and can be used as cosmetics and food coolers.
purification	a separation and purification method of meng diol, using Java citronella oil as raw material to react with 25-35wt% of meng diol crude liquid, including the following steps: (1) 300kg of crude liquid is put into a 500L vacuum distillation kettle, the crude meng diol content is 30.3%, turn on the vacuum system, turn on the heating, set the heating temperature to 130 ℃, wait for the steam to reach the top of the tower, and return for 1 hour; (2) adjust the reflux ratio to 14:2, collect the previous fraction, and switch to collect the middle fraction when the geraniol content in the immediate sample is less than 2% by GC detection. (3) raise the heating temperature by about 10 ℃, collect the middle fraction, and switch the collected fraction when the impurity peak is greater than 3% after GC detection of meng diol. (4) raise the heating temperature by 10 ℃, collect the fractions, and stop heating when the liquid level of the distillation kettle reaches the warning line. (5) when the middle fraction is cooled to 20-25 ℃ and the liquid is in a semi-solid and semi-liquid state, 98wt% Meng diol finished product can be obtained by stirring, pouring into a centrifuge and throwing until no obvious liquid flows out.
application	mendiol is an insect repellent, insecticide composition, characterized by: insect repellent, insecticide composition, comprising (a) lemongrass oil (citronella oil);(B) mendiol;(c) vanillin; and (d) transport medium, the mass ratio of 8 diol to lemongrass oil (citronella oil) is 10~2:1. The advantage of the invention is that it is based on known natural ingredients to alleviate the limitations of current products. The use of two or more insect-repellent materials in a synergistic effect produces a product with additional benefits and superior efficacy in a unique formula. Studies have found that this new composition can effectively repel mosquitoes and has a strong repellent effect. Formulations containing lemongrass oil (citronella oil) and mendiol have been shown to be effective in dealing with Anopheles mosquitoes, mosquito-borne Anopheles mosquitoes, Aedes aegypti mosquitoes that transmit dengue and yellow fever.
use	mendiol is an alcohol organic substance and can be used as a pharmaceutical raw material.
production method	a production method of mendiol, which is made by using lemon eucalyptus essential oil and/or citronellal as raw materials, using solid-loaded quaternary ammonium salt as catalyst, and carrying out cyclization hydration reaction in acidic aqueous solution to prepare mendiol; the solid-loaded quaternary ammonium salt is prepared by quaternization reaction of brominated polystyrene resin and tributylamine; brominated polystyrene resin for styrene and divinylbenzene copolymerization reaction of low cross-linking polystyrene resin and 1,4-dibromobutane for bromine alkylation reaction.

Last Update：2024-04-09 02:00:08

2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol

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