ScenTree, la nouvelle encyclopédie des ingrédients de parfum.

Exploring the branches of scent

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Crédits photo: ScenTree SAS

CAS number :

2785-87-7

EINECS number :

220-499-0

FEMA number :

3598

JECFA number :

717

FLAVIS number :

04.049

Volatility :

Head/Heart

Appearance :

Pale yellow liquid

Price Range :

€€

Stability :

Becomes red under during light exposure and in an alcaline base. This is limiting the use of this raw material in alcaline bases such as shower gel or shampoo bases among others.

Density :

1.038

Molecular formula :

C₁₀H₁₄O₂

Molecular Weight :

166.22 g/mol

Flash Point :

235°F (113°C)

Log P :

Data not available.

Fusion Point :

63°F (17°C)

Boiling Point :

464°F (240°C)

Detection Threshold :

Data not available.

Crédits photo: ScenTree SAS

Year of discovery :

Data not available.

Synthesis route :

DihydroEugenol can be synthetised starting with Isoeugenol or Eugenol, using a catalytical hydrogenation reaction. This reaction consists in putting the molecule under a large pressure of hydrogen, in the presence of a metallic catalyst on carbon, such as platinium or palladium. The insaturation present in Isoeugenol or Eugenol is transformed into a simple bond in the final product.

Synthesis precursor :

DihydroEugenol is not a precursor to the synthesis of any other molecule used in perfumery.

Isomerism :

DihydroEugenol is a constitutional isomer of Viridine®, even if it doesn't have the same smell at all.

Natural availability :

DihydroEugenol has been identified in diverse consumer goods such as some whiskeys and cheeses. Nevertheless, it is not extracted from any plant, to get it on a natual way.

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

Annexe I :

Maximum usage according to the product category :
Ingredients containing
Ingredient Name	CAS N°	Estimated Concentration
Benzyl benzoate	120-51-4	0,6
Benzyl cinnamate	103-41-3	0,8
Benzaldehyde	100-52-7	0,05
Benzyl alcohol	100-51-6	0,2
Benzyl benzoate	120-51-4	10,4
Benzyl cinnamate	103-41-3	2,6
Cinnamic alcohol	104-54-1	0,03
Cinnamic aldehyde	104-55-2	0,5
Eugenol	97-53-0	0,12
Isoeugenol	97-54-1	0,08
Coumarin	91-64-5	25
Dihydrocoumarin	119-84-6	2
Cuminaldehyde	122-03-2	21
Benzaldehyde	100-52-7	0,16
Benzyl benzoate	120-51-4	3,5
Cinnamic aldehyde	104-55-2	2
Coumarin	91-64-5	0,3
Eugenol	97-53-0	70
Farnesol	4602-84-0	0,12
Isoeugenol	97-54-1	0,13
Methyl eugenol	93-15-2	0,01
Estragole	140-67-0	1
Eugenol	97-53-0	58
Methyl eugenol	93-15-2	2
Eugenol	97-53-0	85,3

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). If combinations of phototoxic fragrance ingredients are used, the use levels have to be reduced accordingly. The sum of the concentrations of all phototoxic ingredients, expressed in % of their recommended maximum level in the consumer product shall not exceed 100. Note: See remark on phototoxic ingredients in the Introduction to the IFRA Standards (Appendix 8 to the IFRA Code of Practice) and the Standard on Citrus oil and other furocoumarins-containing essential oils.

Quantitative usage limits :

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5	Cat.6	Cat.7	Cat.8	Cat.9	Cat.10	Cat.11
0,03 %	0,04 %	0,17 %	0,5 %	0,26 %	0,8 %	0,08 %	1,11 %	5 %	2,5 %	Not restricted

Skin contact products		Non skin contact products
Leave on products	Rinse off products	Non skin contact products
0,4 %	X	X

Annexe I :

Some regulated synthetic ingredients are found in nature and in certain proportions in natural ingredients. This presence in nature has to be taken into account when calculating limits of use recommended by the IFRA. In case you do not know these concentrations, you can use the ones estimated by the IFRA. Here They are :

List of natural ingredients containing the material presented here
Ingredient Name	Botanical Name	CAS N°	Estimated Concentration
Balsam oil, Peru	Myroxylon balsamum (L.) Harms var. pereirae (Royle) Harms	8007-00-9	15,2
Benzoin extract, Siam	Styrax tonkinensis Craib	9000-72-0	0,8
Benzoin extract, Sumatra	Styrax benzoin Dryand.	9000-05-9	0,8
Tolu, balsam, extract	Myroxylon balsamum (L.) Harms.	8024-03-1	2,6
Tolu, balsam, gum	Myroxylon balsamum (L.) Harms.	8024-03-1	0,6
Cumin seed oil	Cuminum cyminum L.	8014-13-9	21

Annexe I :

Maximum usage according to the product category :
Ingredients containing
Ingredient Name	CAS N°	Estimated Concentration
Benzyl cinnamate	103-41-3	0,8
Benzyl benzoate	120-51-4	0,6
Benzyl alcohol	100-51-6	0,2
Benzaldehyde	100-52-7	0,05
Benzyl cinnamate	103-41-3	2,6
Cinnamic alcohol	104-54-1	0,04
Cinnamic aldehyde	104-55-2	0,5
Benzyl benzoate	120-51-4	10,4
Eugenol	97-53-0	0,12
Isoeugenol	97-54-1	0,08
Dihydrocoumarin	119-84-6	2
Coumarin	91-64-5	25
Cuminaldehyde	122-03-2	21
p-Isopropylbenzyl alcohol	536-60-7	0,2
Benzyl alcohol	100-51-6	0,1
Benzaldehyde	100-52-7	0,16
Cinnamyl acetate	103-54-8	1,7
Benzyl benzoate	120-51-4	3,5
Farnesol	4602-84-0	0,12
Coumarin	91-64-5	0,3
Methyl eugenol	93-15-2	0,01
Safrole	94-59-7	1,2
Eugenol	97-53-0	74
Isoeugenol	97-54-1	0,13
1-Octen-3-yl acetate	2442-10-6	0,3
Estragole	140-67-0	0,1
Methyl eugenol	93-15-2	2
Eugenol	97-53-0	51
Eugenol	97-53-0	85,3

Restriction type :

RESTRICTION

Cause of restriction :

DERMAL SENSITIZATION AND SYSTEMIC TOXICITY

Amendment :

49

Comments :

The Standard is set due to the phototoxic effects of Cumin oil. For more detailed information on the application of this Standard, please refer to the note on phototoxic ingredients in chapter 1 of the Guidance for the use of IFRA Standards. If the level of furocoumarins is unknown, the restriction level specified in this IFRA Standard applies. Combination effects of phototoxic ingredients are only taken into consideration for the furocoumarin-containing fragrance ingredients (extracts) listed in the IFRA Standard of Citrus oils and other furocoumarins containing essential oils. If combinations of furocoumarin-containing phototoxic fragrance ingredients (extracts) are used, the use levels must be reduced accordingly. The sum of the concentrations of all furocoumarin-containing phototoxic fragrance ingredients (extracts), expressed in of their recommended upper concentration level in the consumer product shall not exceed 100.

Quantitative limit on the use :

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5A	Cat.5B	Cat.5C	Cat.5D	Cat.6
0,13 %	0,039 %	0,78 %	0,73 %	0,19 %	0,19 %	0,19 %	0,062 %	0,43 %
Cat.7A	Cat.7B	Cat.8	Cat.9	Cat.10A	Cat.10B	Cat.11A	Cat.11B	Cat.12
1,5 %	1,5 %	0,062 %	1,4 %	1,4 %	5,1 %	0,062 %	0,062 %	Not restricted

Annexe I :

Some regulated synthetic ingredients are found in nature and in certain proportions in natural ingredients. This presence in nature has to be taken into account when calculating limits of use recommended by the IFRA. In case you do not know these concentrations, you can use the ones estimated by the IFRA. Here They are :

List of natural ingredients containing the material presented here
Ingredient Name	Botanical Name	CAS N°	Estimated Concentration
Balsam oil, Peru	Myroxylon balsamum (L.) Harms var. pereirae (Royle) Harms	8007-00-9	15,2
Benzoin extract, Siam	Styrax tonkinensis Craib	9000-72-0	0,8
Benzoin extract, Sumatra	Styrax benzoin Dryand.	9000-05-9	0,8
Styrax extract	Liquidambar styraciflua L.	8046-19-3	1
Styrax oil, Honduras	Liquidambar styraciflua L.	8046-19-3	2,1
Tolu, balsam, extract	Myroxylon balsamum (L.) Harms.	8024-03-1	2,6
Tolu, balsam, gum	Myroxylon balsamum (L.) Harms.	8024-03-1	0,6
Cubeb oil	Piper cubeba L. f.	8007-87-2	0,1
Cumin seed oil	Cuminum cyminum L.	8014-13-9	21
Birch tar oil, rectified	Betula spp.	8001-88-5	0,9
Cade oil, rectified	Juniperus oxycedrus L.	8013-10-3	0,5

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

Uses in perfumery :

DihydroEugenol is used to replace Eugenol is some accords, as it is not a regulated ingredient, for the same reasons as Eugenol, but mostly when the aim is to bring more facets to fresh spices such as black pepper, cardamom etc.

Other names :

2-methoxy-4-propylphenol, 4-propylguaiacol, ortho-5-propylhydroxyanisole, ortho-4-propylmethoxyphenol, cerulignol, coerulignol, guaiacylpropane, cerulignol, cerulignol, dihydro eugenol, guaiacyl propane, 4-hydroxy-3-methoxypropyl benzene, (4-hydroxy-3-methoxyphenyl) propane, 4-propyl guaiacol, para-propyl guaiacol, 5-propyl ortho-hydroxyanisole, 4- propyl-2-methoxyphenol

Other comments :

Compared to Eugenol, Dihydroeugenol has an even more metallic smell, closing it to Clove Bud EO.