ScenTree, la nouvelle encyclopédie des ingrédients de parfum.

Exploring the branches of scent

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Crédits photo: ScenTree SAS

CAS number :

19009-56-4

EINECS number :

242-745-6

FEMA number :

Data not available.

JECFA number :

Data not available.

FLAVIS number :

05.160

Volatility :

Head

Appearance :

Colorless liquid

Price Range :

€€

Stability :

Aldehydes may form diethylacetals in alcoholic perfumes, with no real impact on their smell

Density :

0.823

Molecular formula :

C₁₁H₂₂O

Molecular Weight :

170.3 g/mol

Flash Point :

178°F (81°C)

Log P :

Data not available.

Fusion Point :

Data not available.

Boiling Point :

Data not available.

Detection Threshold :

Data not available.

Crédits photo: ScenTree SAS

Year of discovery :

Data not available.

Synthesis route :

Aldehyde C-11 MOA (for Methyl Octyl Acetaldehyde) is synthesized in two different ways. 2-Decanone reacts with a Chloroacetate to give a glycidate, which can be saponified and decarboxylated to obtain the final product. The second synthesis route firstly reacts Aldehyde C-10 Decylenic with formaldehyde in the catalytic presence of an amine, and then a hydrogenation of the intermediate product allows to obtain the Aldehyde C-11 MOA.

Synthesis precursor :

Aldehyde C-11 MOA forms a Schiff base by reaction with Methyl Anthranilate or Indole for example. It can also be used for condensation with another aldehyde or ketone to form the desired alcene.

Isomerism :

Aldehyde C11 MOA is a constitutional isomer of Aldehyde C11 Undecylic. It only has one ramification, while Aldehyde C11 Undecylic has a longer carbon chain. Its smell is much more fresh and zesty.

Natural availability :

Aldehyde C-11 MOA is a purely synthetic aldehyde, not found in nature.

Allergens :

This ingredient does not contain any allergen.

For more information on allergens used in perfumery, please consult our article about allergens

IFRA :

This ingredient is not restricted

Maximum usage according to the product category :
Ingredients containing
Ingredient Name	CAS N°	Estimated Concentration
Coumarin	91-64-5	0,02
Eugenol	97-53-0	0,07
Geraniol	106-24-1	1,2

Skin contact products	Non skin contact products
Leave on products	Rinse off products
0,01 %	X	X

List of natural ingredients containing the material presented here
Ingredient Name	Botanical Name	CAS N°	Estimated Concentration

Maximum usage according to the product category :
Ingredients containing
Ingredient Name	CAS N°	Estimated Concentration
Geraniol	106-24-1	1,2
Coumarin	91-64-5	0,02
Eugenol	97-53-0	0,07
beta-Thujone	471-15-8	0,5

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5A	Cat.5B	Cat.5C	Cat.5D	Cat.6
0,01 %	0,01 %	0,01 %	0,01 %	0,01 %	0,01 %	0,01 %	0,01 %	0,01 %
Cat.7A	Cat.7B	Cat.8	Cat.9	Cat.10A	Cat.10B	Cat.11A	Cat.11B	Cat.12
0,1 %	0,01 %	0,01 %	0,1 %	0,1 %	0,01 %	Not restricted	0.010 %	Not restricted

List of natural ingredients containing the material presented here
Ingredient Name	Botanical Name	CAS N°	Estimated Concentration

To learn more about IFRA's standards : https://ifrafragrance.org/safe-use/library
To find out the specificities of each category and the ingredients prohibited by IFRA, click article about l'IFRA
ScenTree is solely responsible for the information provided here.

Uses in perfumery :

Used in coriander leaves notes (Coriander Leaf EO), in sparkling liquors notes, in eaux fraiches and zesty notes, bringing an agrestic undernote.

Other names :

aldehyde C11 MOA, aldehyde MOA, MOA, 2-methyl decanal, 2-methyl-1-decanal, methyl octyl acetaldehyde, 2-methyl decanal, 2-methyldecanal, methyloctylacetaldehyde, methyl octyl acetic aldehyde

Other comments :

In comparision with Aldehyde C-12 MNA, Aldehyde C-11 MOA has one additional carbon atom. This changes it into a more fruity, a deeper and more agrestic smell.

Exploring the branches of scent

Year of discovery :

Data not available.

Synthesis route :

Synthesis precursor :

Aldehyde C-11 MOA forms a Schiff base by reaction with Methyl Anthranilate or Indole for example. It can also be used for condensation with another aldehyde or ketone to form the desired alcene.

Isomerism :

Aldehyde C11 MOA is a constitutional isomer of Aldehyde C11 Undecylic. It only has one ramification, while Aldehyde C11 Undecylic has a longer carbon chain. Its smell is much more fresh and zesty.

Natural availability :

Aldehyde C-11 MOA is a purely synthetic aldehyde, not found in nature.

Allergens :

This ingredient does not contain any allergen.

Annexe I :

Restriction type :

RESTRICTION NON QRA

Cause of restriction :

PHOTOTOXICITY

Amendment :

48

Comments :

The limit only applies to applications on skin exposed to sunshine, excluding rinse-off products (please refer to Table 4 of the QRA booklet for more detailed information).

Quantitative usage limits :

Annexe I :

Annexe I :

Restriction type :

Cause of restriction :

PHOTOTOXICITY

Amendment :

49

Comments :

Quantitative limit on the use :

Annexe I :