p-Menthane-3,8-diol CAS:42822-86-6 CAS:p-Menthane-3,8-diol,42822-86-6

  • Product Name:p-Menthane-3,8-diol
  • CAS:42822-86-6
  • Molecular formula:C10H20O2
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p-Menthane-3,8-diol CAS:42822-86-6 CAS:p-Menthane-3,8-diol,42822-86-6

p-Menthane-3,8-diol CAS:42822-86-6 CAS:p-Menthane-3,8-diol,42822-86-6 Basic information

Product Name: p-Menthane-3,8-diol
Synonyms: 2-hydroxy-alpha,alpha,4-trimethylcyclohexanemethanol;2-(2-hydroxypropan-2-yl)-5-methyl-cyclohexan-1-ol;PARA-MENTHANE-3,8-DIOL;1-(2-Hydroxy-4-methylcyclohexyl)-1-methylethanol;2-Hydroxy-4,α,α-trimethylcyclohexanemethanol;p-Menthane-3,8-diol;p-Methane-3,8-d
CAS: 42822-86-6
MF: C10H20O2
MW: 172.26
EINECS: 255-953-7
Product Categories: Cosmetics;Food additive;Insecticide;Spice
Mol File: 42822-86-6.mol

p-Menthane-3,8-diol CAS:42822-86-6 CAS:p-Menthane-3,8-diol,42822-86-6 Chemical Properties

density: 1.009±0.06 g/cm3(Predicted)
Melting point: 82-83 °C
Boiling point: 267.6±8.0 °C(Predicted)
pka: 15.18±0.29(Predicted)
FEMA: 4053 | P-MENTHANE-3,8-DIOL
JECFA Number: 1416
EPA Substance Registry System: p-Menthane-3,8-diol (42822-86-6)

Items

Specifications

Results

Appearance

White to pale yellow solid

Pale yellow solid

 

Odor

Minty, herbaceous, Eucalyptus-like aroma

 

Qualified

Assay (sum of isomers)

≥98.0%

98.1%


p-Menthane-3,8-diol Usage And Synthesis
Definition

P-menthane-3,8-diol is a p-menthane monoterpenoid in which p-menthane carries hydroxy groups at C-3 and C-8. P-menthane-3,8-diol derives from a hydride of a p-menthane.

Uses

p-Menthane-3, 8-diol, also known as para-menthane-3, 8-diol and PMD, is an active ingredient used in insect repellents. p-Menthane-3, 8-diol smells similar to menthol and acts as a coolant.
P-menthane-3,8-diol is used to make products that are applied to human skin and clothing for the purpose of repelling insects, such as mosquitoes, biting flies and gnats. P-menthane-3,8-diol can be used in two types of consumer pesticide products: a spray and a lotion.

Description

p-Menthane-3,8-diol, also known as para-menthane-3,8-diol, PMD, or menthoglycol, is an active ingredient used in insect repellents. It smells similar to menthol and has a cooling feel. There are eight possible isomers of p-Menthane-3,8-diol, and the exact composition is rarely specified and is commonly assumed to be a complex mixture.
Refined OLE contains approximately 64% p-Menthane-3,8-diol (a mixture of the cis and trans isomers of p-menthane-3,8-diol). OLE has been notified under the European Biocidal Products Directive (BPD) 98/8/EC (now BPR Regulation (EU) No. 528/212) under its generic name "p-Menthane-3,8-diol rich botanic oil" and is currently proceeding through the registration process with the Health and Safety Executive in the UK. It is also registered with Canada's Pest Management Regulatory Agency under the generic name "p-Menthane-3,8-diol and related oil of lemon eucalyptus compounds".

Chemical Propertiesp-Menthane-3,8-diol has a faint minty, herbaceous, eucalyptus-like odor. The cooling power is reported to be approxi mately 9.5 times that of (-)-menthol.
OccurrenceReportedly present in the lemon eucalyptus plant(Eucalyptus citriodora tree), which is native to Australia, but is now cultivated in many warm places around the world.


PreparationIn a patented method, citronellal is treated with aqueous sulfuric acid to produce p-menthane-3,8-diol. Also produced by an extraction process utilizing lemon eucalyptus oil.


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