ScenTree, la nouvelle encyclopédie des ingrédients de parfum.

Exploring the branches of scent

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Crédits photo: ScenTree SAS

CAS number :

6753-98-6

EINECS number :

229-816-7

FEMA number :

Data not available.

JECFA number :

Data not available.

FLAVIS number :

1.043

Volatility :

Base

Appearance :

Colorless to yellow liquid

Price Range :

Data not available.

Stability :

Very stable

Density :

0.889 - 0.907 @25°C

Molecular formula :

C₁₅H₂₄

Molecular Weight :

204.35 g/mol

Flash Point :

Data not available.

Log P :

6.6

Fusion Point :

Data not available.

Boiling Point :

330 °F (166 - 168 °C)

Detection Threshold :

Data not available.

Crédits photo: ScenTree SAS

Year of discovery :

First isolated from hops, hence the name

Synthesis route :

Alpha-humulene is a sesquiterpene. This means that it has three units of Isoprenes. Isoprene is a five carbon atoms diene, constituting a basis for the synthesis of terpenes by Diels-Alder reactions. Thus, humulene can be synthesized from isoprene, or other easily obtainable terpenes, to shorten the synthesis.

Synthesis precursor :

Data not available.

Isomerism :

Also named alpha-caryophyllene, the alpha-humulene is an isomer of beta-caryophyllene

Natural availability :

This molecule is found in a countless number of essential oils, usually in trace amounts. Among the essential oils concerned, we find the great majority of spices, herbs, woods and citrus.

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
Benzaldehyde	100-52-7	0,1
Cinnamic alcohol	104-54-1	1,5
Cinnamic aldehyde	104-55-2	0,1
Benzaldehyde	100-52-7	0,03
Benzyl alcohol	100-51-6	0,9
Benzyl benzoate	120-51-4	54
Benzyl cinnamate	103-41-3	15,2
Coumarin	91-64-5	0,03
Eugenol	97-53-0	0,03
Isoeugenol	97-54-1	0,03
Benzyl benzoate	120-51-4	0,6
Benzyl cinnamate	103-41-3	0,8
Coumarin	91-64-5	46,7
Dihydrocoumarin	119-84-6	0,05
Geraniol	106-24-1	0,2
Eugenol	97-53-0	1
Eugenol	97-53-0	80
Methyl eugenol	93-15-2	5
Eugenol	97-53-0	73,3
Benzaldehyde	100-52-7	0,26
Benzyl benzoate	120-51-4	0,66
Cinnamic alcohol	104-54-1	0,26
Cinnamic aldehyde	104-55-2	75
Coumarin	91-64-5	0,66
Eugenol	97-53-0	2,2
Isoeugenol	97-54-1	0,02

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5	Cat.6	Cat.7	Cat.8	Cat.9	Cat.10	Cat.11
0,01 %	0,02 %	0,07 %	0,2 %	0,1 %	0,3 %	0,04 %	0,5 %	2,4 %	2,5 %	Not restricted

Skin contact products	Non skin contact products
Leave on products	Rinse off products
	0,001 %	0,05 %

List of natural ingredients containing the material presented here
Ingredient Name	Botanical Name	CAS N°	Estimated Concentration
Anise seed oil	Pimpinella anisum L.	8007-70-3	0,03
Cassie absolute	Vachellia farnesiana (L.) Willd.	8023-82-3	1
Cassie extract	Vachellia farnesiana (L.) Willd.	8023-82-3	0,4
Fennel oil, bitter	Foeniculum vulgare Miller	8006-84-6	1
Fennel oil, sweet	Foeniculum vulgare Miller	8006-84-6	1
Heath extract	Erica arborea L.	68916-48-3	0,1
Mimosa absolute	Acacia decurrens (Wendl.f.) Willd.	8031-03-6	0,015
Star anise oil	Illicium verum Hook, f.	68952-43-2	0,2
Vanilla absolute	Vanilla spp.	8024-06-4	0,3
Vanilla oleoresin	Vanilla spp.	8024-06-4	0,04
Vanilla tahitensis extract	Vanilla tahitensis J.W. Moore	953789-39-47	0,04

Maximum usage according to the product category :
Ingredients containing
Ingredient Name	CAS N°	Estimated Concentration
Benzaldehyde	100-52-7	0,1
Benzyl cinnamate	103-41-3	2,1
Cinnamic alcohol	104-54-1	1,5
Cinnamic aldehyde	104-55-2	0,1
Benzyl alcohol	100-51-6	0,9
Benzaldehyde	100-52-7	0,03
Benzyl cinnamate	103-41-3	15,2
Benzyl benzoate	120-51-4	54
Coumarin	91-64-5	0,03
Eugenol	97-53-0	0,03
Isoeugenol	97-54-1	0,03
Benzyl cinnamate	103-41-3	0,8
Benzyl benzoate	120-51-4	0,5
Dihydrocoumarin	119-84-6	0,05
Coumarin	91-64-5	46,7
Geraniol	106-24-1	0,2
alpha-Bisabolol	515-69-5	0,1
Eugenol	97-53-0	1
Methyl eugenol	93-15-2	8,5
Eugenol	97-53-0	69
Eugenol	97-53-0	82
Benzaldehyde	100-52-7	0,2
Cinnamyl acetate	103-54-8	5
Cinnamic alcohol	104-54-1	0,3
Cinnamic aldehyde	104-55-2	75
Benzyl benzoate	120-51-4	0,6
o-Methoxycinnamaldehyde	1504-74-1	0,5
Coumarin	91-64-5	0,6
Safrole	94-59-7	0,2
Eugenol	97-53-0	2
Isoeugenol	97-54-1	0,02

Cat.1	Cat.2	Cat.3	Cat.4	Cat.5A	Cat.5B	Cat.5C	Cat.5D	Cat.6
0,037 %	0,011 %	0,22 %	0,21 %	0,052 %	0,052 %	0,052 %	0,052 %	0,12 %
Cat.7A	Cat.7B	Cat.8	Cat.9	Cat.10A	Cat.10B	Cat.11A	Cat.11B	Cat.12
0,42 %	0,42 %	0,022 %	0,4 %	1,4 %	1,4 %	0,8 %	0,8 %	Not restricted

List of natural ingredients containing the material presented here
Ingredient Name	Botanical Name	CAS N°	Estimated Concentration
Anise seed oil	Pimpinella anisum L.	8007-70-3	1
Basil oil, chemotype estragole	Ocimum basilicum L.	8015-73-4	0,1
Cassie absolute	Vachellia farnesiana (L.) Willd.	8023-82-3	1
Cassie extract	Vachellia farnesiana (L.) Willd.	8023-82-3	0,4
Fennel oil, bitter, phellandrene type	Foeniculum vulgare Mill.	84625-39-8	0,2
Fennel oil, bitter,anethole type	Foeniculum vulgare Mill.	8006-84-6	0,3
Fennel oil, sweet	Foeniculum vulgare subsp. vulgare var. Dulce (Mill) Batt.	8006-84-6	1
Heath extract	Erica arborea L.	68916-48-3	0,1
Mimosa absolute	Acacia decurrens (Wendl.f.) Willd.	8031-03-6	0,015
Star anise oil	Illicium verum Hook, f.	68952-43-2	0,2
Vanilla absolute	Vanilla spp.	8024-06-4	0,3
Vanilla oleoresin	Vanilla spp.	8024-06-4	0,04
Vanilla tahitensis extract	Vanilla tahitensis J.W. Moore	953789-39-4	0,04

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 :

Rarely used as such. Humulene-alpha is however very present in our formulas because it is a component of a large number of essential oils. It is therefore very commun to find it in the results of chromatographic analysis.

Other names :

3,7,10-humulatriene ; α-caryophyllène ; (1E,4E,8E)-2,6,6,9-tétraméthylcycloundéca-1,4,8-triène

Other comments :

Data not available.

Exploring the branches of scent

Year of discovery :

First isolated from hops, hence the name

Synthesis route :

Synthesis precursor :

Data not available.

Isomerism :

Also named alpha-caryophyllene, the alpha-humulene is an isomer of beta-caryophyllene

Natural availability :

This molecule is found in a countless number of essential oils, usually in trace amounts. Among the essential oils concerned, we find the great majority of spices, herbs, woods and citrus.

Allergens :

This ingredient does not contain any allergen.

Annexe I :

Restriction type :

RESTRICTION QRA

Cause of restriction :

SENSITIZATION

Amendment :

40

Comments :

The use of Peru balsam crude is PROHIBITED

Quantitative usage limits :

Annexe I :

Annexe I :

Restriction type :

Cause of restriction :

DERMAL SENSITIZATION

Amendment :

49

Comments :

Peru balsam crude should not be used as a fragrance ingredient for any finished product application. The restriction only applies to Peru balsam extracts and distillates (Peru balsam oil, absolute and anhydrol).

Quantitative limit on the use :

Annexe I :