ScenTree, la nouvelle encyclopédie des ingrédients de parfum.

Exploring the branches of scent

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Crédits photo: ScenTree SAS

CAS number :

2277-19-2

EINECS number :

218-900-9

FEMA number :

3580

JECFA number :

325

FLAVIS number :

05.059

Volatility :

Head

Appearance :

Colorless liquid

Price Range :

€€€€€

Stability :

Aldehyde can form their diethylacetal in alcoholic stability, bringing not so much olfactive change, but less efficiency of the ingredient.

Density :

0.841

Molecular formula :

C₉H₁₆O

Molecular Weight :

140.23 g/mol

Flash Point :

235°F (113°C)

Log P :

Data not available.

Fusion Point :

Data not available.

Boiling Point :

189°F (87°C) (at 25 hPa)

Detection Threshold :

In the order of ppb. or 10 millionths of a percent

Crédits photo: ScenTree SAS

Year of discovery :

Data not available.

Synthesis route :

Cis-6-Nonenal is synthesized by a catalytic hydrogenation reaction (e. g. platinum catalysis) of 6-nonynal diethyl acetal. The latter is obtained by reaction between sodium ethanolate (obtained by reaction between pure sodium and ethanol) and the latter alkyne. The product obtained as a result of this first synthesis step is then subjected to an acid hydrolysis to obtain the final synthesis product: cis-6-Nonenal.

Synthesis precursor :

Cis-6-nonenal, like all aldehydes, can be used to synthesize Schiff bases, by reaction with Methyl Anthranilate or Indole for example. These reactions often lead to the formation of a very powerful and coloured product.

Isomerism :

The trans diastereoisomer of cis-6-Nonenal is much less used in perfumery. Melonal® is also a position isomer of cis-6-Nonenal. The main chain of Melonal® is shorter, and has two ramifications. The result is a fruity smell, closer to melon, but with similar aqueous accents.

Natural availability :

Cis-6-Nonenal is one of the main components of the odorous principle of melon and cucumber. It is also found in some fish and in a fruit called pepino dulce.

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

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5	Cat.6	Cat.7	Cat.8	Cat.9	Cat.10	Cat.11
0,66 %	0,84 %	3,47 %	10,41 %	5,48 %	16,67 %	1,74 %	2 %	5 %	2,5 %	Not restricted

Skin contact products	Non skin contact products
Leave on products	Rinse off products

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

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5A	Cat.5B	Cat.5C	Cat.5D	Cat.6
1,8 %	0,53 %	11 %	9,9 %	2,5 %	2,5 %	2,5 %	2,5 %	5,8 %
Cat.7A	Cat.7B	Cat.8	Cat.9	Cat.10A	Cat.10B	Cat.11A	Cat.11B	Cat.12
20 %	20 %	1 %	19 %	69 %	69 %	38 %	38 %	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 :

Cis-6-Nonenal is used in reproductions of fruity notes of cucumber, melon, and to bring an aqueous note to fruity accords and perfumes. Also used in violet leaf notes, to provide an aqueous facet.

Other names :

(Z)-6-Nonenal, cis-6-nonenyl aldehyde

Other comments :

Cis-6-Nonenal, like trans-2-cis-6-Nonadienal, is a very powerful note, with a very low detection threshold. It must therefore be used in dilution in the compositions. In addition, it is more used for melon notes than trans-2-cis-6-Nonadienal, which is more reminiscent of cucumber.

Exploring the branches of scent

Year of discovery :

Data not available.

Synthesis route :

Synthesis precursor :

Cis-6-nonenal, like all aldehydes, can be used to synthesize Schiff bases, by reaction with Methyl Anthranilate or Indole for example. These reactions often lead to the formation of a very powerful and coloured product.

Isomerism :

The trans diastereoisomer of cis-6-Nonenal is much less used in perfumery. Melonal® is also a position isomer of cis-6-Nonenal. The main chain of Melonal® is shorter, and has two ramifications. The result is a fruity smell, closer to melon, but with similar aqueous accents.

Natural availability :

Cis-6-Nonenal is one of the main components of the odorous principle of melon and cucumber. It is also found in some fish and in a fruit called pepino dulce.

Allergens :

This ingredient does not contain any allergen.

Annexe I :

Restriction type :

RESTRICTION QRA

Cause of restriction :

SENSITIZATION

Amendment :

46

Comments :

The above limits apply to Rose Ketones used individually or in combination. The sum of concentrations of Rose ketones isomers should not exceed the maximum concentration levels established by this Standard.

Quantitative usage limits :

Annexe I :

Annexe I :

Restriction type :

Cause of restriction :

DERMAL SENSITIZATION

Amendment :

49

Comments :

4-(4-Hydroxyphenyl)butan-2-one has been found in natural extracts but only at trace levels.

Quantitative limit on the use :

Annexe I :