| Identification | Back Directory | [Name]
2-METHYL OCTANAL | [CAS]
7786-29-0 | [Synonyms]
FEMA 2727
2-methyl-octana
2-METHYL OCTANAL
Octanal, 2-methyl-
2-Methyloctanal?New
alpha-methyloctanal
METHYLHEXYLACETALDEHYD
METHYL HEXYL ACETALDEHYDE | [EINECS(EC#)]
232-093-0 | [Molecular Formula]
C9H18O | [MDL Number]
MFCD00216765 | [MOL File]
7786-29-0.mol | [Molecular Weight]
142.24 |
| Chemical Properties | Back Directory | [Melting point ]
-18°C (estimate) | [Boiling point ]
189.85°C (estimate) | [density ]
0.8410 | [FEMA ]
2727 | 2-METHYLOCTANAL | [refractive index ]
1.4230 | [storage temp. ]
Inert atmosphere,Store in freezer, under -20°C | [solubility ]
Insoluble in water, soluble in alcohol and oils. | [form ]
Colourless oily liquid. | [Odor]
at 100.00 %. floral rose lily muguet | [Odor Type]
floral | [JECFA Number]
270 | [Cosmetics Ingredients Functions]
PERFUMING | [LogP]
3.38 | [EPA Substance Registry System]
Octanal, 2-methyl- (7786-29-0) |
| Safety Data | Back Directory | [TSCA ]
TSCA listed | [Safety Profile]
Low toxicity by
ingestion and skin contact. A skin irritant.
When heated to decomposition it emits
acrid smoke and irritating fumes. |
| Hazard Information | Back Directory | [Description]
2-Methyloctanal has a delicate, floral odor (rose- or lily-like).
Prepared by heating methoxymethyl hexyl carbinol with oxalic
acid or with anhydrous formic acid; also from hexanal and propionic
aldehyde, Darzen’s synthesis of reacting methyl hexyl ketone
and ethyl chloroacetate with sodium ethylate; the resulting ester
is then hydrolyzed to the acid and this heated under vacuum. | [Chemical Properties]
2-Methyloctanal has a delicate, floral odor, rose- or lily-like | [Uses]
In effect more versatile than Methyl nonyl acetaldehyde, 2-methyloctanal creates floral-diffusive topnotes in a Lily or Muguet, freshness in Mimosa or Rose, gives clean and airy topnotes to Citrus fragrances, etc. It finds some use in flavor compositions, mainly in Citrus types where it may partly or wholly substitute the conventional Nonanal. Concentration used is about 1 to 2 ppm in the finished product.
| [Definition]
ChEBI: 2-Methyloctanal is a fatty aldehyde. | [Synthesis]
By heating methoxymethyl hexyl carbinol with oxalic acid or with anhydrous formic acid; also from hexanal and propionic aldehyde, Darzen’s synthesis of reacting methyl hexyl ketone and ethyl chloroacetate with sodium ethylate; the resulting ester is
then hydrolyzed to the acid and this heated under vacuum. |
|
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