(Z)-5-octen-1-ol

(Z)-5-octen-1-ol is an alkenyl primary alcohol with the molecular formula C₈H₁₆O. It appears as a clear liquid with a distinct green odor profile characterized by melon, watery, earthy, and slightly soapy nuances. Known by synonyms such as cis-5-octen-1-ol and (Z)-oct-5-en-1-ol, this compound contributes a green, fruity note in various flavor and fragrance formulations. It is naturally found in several fruits, including apple, banana, and passion fruit, as well as in champaca concrete. The compound is sourced either through extraction from natural materials or via chemical synthesis. More detailed chemical information can be accessed through its PubChem entry.

(Z)-5-octen-1-ol occurs in nature in fruits such as apple, banana, and passion fruit, as well as in floral concretes like champaca. Its biological production is linked to plant metabolism involving unsaturated alcohols. In flavor and fragrance industries, it is used as a green, melon-fruit-like odorant and flavor enhancer, notable for complementing mushroom and citrus notes. It is commonly applied in formulations aiming to evoke fresh fruit, green apple, and tropical fruity impressions. The compound's usage levels are guided by safety standards including FEMA (US) and IFRA (Global), which recommend maximum concentrations to ensure safe consumer exposure. These standards help regulate its incorporation in both flavorings and perfumes.

(Z)-5-octen-1-ol is a moderately hydrophobic liquid with an estimated logP value around 2.35, indicating balanced affinity between aqueous and lipid phases. It exhibits a specific gravity near 0.85 at 25 °C and a refractive index between 1.445 and 1.451 at 20 °C. The vapor pressure measured at 25 °C is low (0.138 mmHg), supporting its persistence in formulations. Its flash point is approximately 85 °C (185 °F), relevant for handling and storage precautions. Solubility data show it dissolves in alcohol and has limited water solubility (estimated 1855 mg/L at 25 °C). Proper storage involves cool, dry conditions in tightly sealed containers protected from heat and light to maintain stability and shelf life of at least 24 months.

(IUPAC):	Atomic Weights of the Elements 2011 (pdf)
Videos:	The Periodic Table of Videos
tgsc:	Atomic Weights use for this web site
(IUPAC):	Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):	View
CHEMBL:	View
HMDB (The Human Metabolome Database):	HMDB31298
FooDB:	FDB003348
Export Tariff Code:	2905.16.0050
Typical G.C.
VCF-Online:	VCF Volatile Compounds in Food
ChemSpider:	View

Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 38 - Irritating to skin. R 41 - Risk of serious damage to eyes. S 02 - Keep out of the reach of children. S 24/25 - Avoid contact with skin and eyes. S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 37/39 - Wear suitable gloves and eye/face protection.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50 > 5000 mg/kg Melon, citrus, strawberry, cherry, peach, and other fruit flavors. Also enhances mushroom.
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
flavor and fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
Recommendation for (Z)-5-octen-1-ol usage levels up to:
	2.0000 % in the fragrance concentrate.
Maximised Survey-derived Daily Intakes (MSDI-EU):		0.40 (μg/capita/day)
Structure Class:		I
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 13
Click here to view publication 13
		average usual ppm	average maximum ppm
baked goods:		-	15.00000
beverages(nonalcoholic):		-	10.00000
beverages(alcoholic):		-	15.00000
breakfast cereal:		-	15.00000
cheese:		-	-
chewing gum:		-	25.00000
condiments / relishes:		-	-
confectionery froastings:		-	10.00000
egg products:		-	-
fats / oils:		-	-
fish products:		-	-
frozen dairy:		-	15.00000
fruit ices:		-	20.00000
gelatins / puddings:		-	20.00000
granulated sugar:		-	-
gravies:		-	-
hard candy:		-	25.00000
imitation dairy:		-	-
instant coffee / tea:		-	-
jams / jellies:		-	10.00000
meat products:		-	-
milk products:		-	10.00000
nut products:		-	5.00000
other grains:		-	-
poultry:		-	-
processed fruits:		-	5.00000
processed vegetables:		-	-
reconstituted vegetables:		-	1.00000
seasonings / flavors:		-	-
snack foods:		-	30.00000
soft candy:		-	15.00000
soups:		-	-
sugar substitutes:		-	-
sweet sauces:		-	5.00000

Safety references

European Food Safety Athority(EFSA):Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...

European Food Safety Authority (EFSA) reference(s):

Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) related to Flavouring Group Evaluation 6 (FGE.06): Straight-and branched-chain aliphatic unsatured primary alcohols, aldehydes, carboxylic acids, and esters from chemical groups 1 and 4 View page or View pdf

Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC) on a request from the Commission related to Flavouring Group Evaluation 5: Esters of 23 branched- and straight-chain aliphatic saturated primary alcohols and of one secondary alcohol, and 24 branched- and straight-chain unsaturated carboxylic acids from chemical groups 1, 2, and 5 View page or View pdf

Flavouring Group Evaluation 6, Revision 1 (FGE.06Rev1) - Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC) View page or View pdf

Flavouring Group Evaluation 5, Revision 1 (FGE.05Rev1):Esters of branched- and straight-chain aliphatic saturated primary alcohols and of one secondary alcohol, and branched- and straight-chain unsaturated carboxylic acids from chemical groups 1, 2, and 5 (Commission Regulation (EC) No 1565/2000 of 18 July 2000) [1] - Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC) View page or View pdf

Flavouring Group Evaluation 5, Revision 2 (FGE.05Rev2): Branched- and straight-chain unsaturated carboxylic acids and esters of these with aliphatic saturated alcohols from chemical groups 1, 2, 3 and 5 View page or View pdf

EPI System: View

AIDS Citations:Search

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Toxicology Citations:Search

EPA Substance Registry Services (TSCA):64275-73-6

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

Laboratory Chemical Safety Summary :5352837

National Institute of Allergy and Infectious Diseases:Data

WGK Germany:3

(Z)-oct-5-en-1-ol

Chemidplus:0064275736

(E)-oct-5-en-1-ol