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General Material Information

Preferred name grapefruit mercaptan
Trivial Name 1-p-Menthene-8-thiol
Short Description 1-p-menthen-8-thiol
Formula C10 H18 S
CAS Number 71159-90-5
FEMA Number 3700
Flavis Number 12.085
ECHA Number 275-223-1
FDA UNII 7AT54D0N8R
Nikkaji Number J308.725E
xLogP3-AA 2.80 (est)
NMR Predictor External link
JECFA Food Flavoring 523 1-p-menthen-8-thiol
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 71159-90-5 ; 1-P-MENTHENE-8-THIOL
Synonyms
  • 3-cyclohexene-1-methanethiol, a,a,4-trimethyl-
  • grapefruit mercaptan 0.1% in grapefruit oil natural
  • grapefruit mercaptan 1% in grapefruit oil natural
  • grapefruit mercaptan 1% in PG natural
  • grapefruit mercaptan, 1% in grapefruit terpenes
  • grapefruit mercaptan, 1% in TEC
  • grapefruit mercaptan, para-menthen-8-thiol, 1% in PG
  • p- menth-1-en-8-thiol
  • p- menth-1-ene-8-thiol
  • para- menth-1-ene-8-thiol
  • 1-p- menthen-8-thiol
  • 1-para- menthen-8-thiol
  • p- menthen-8-thiol
  • p- menthene thiol
  • para- menthene thiol
  • 1-p- menthene-8-thiol
  • 1-para- menthene-8-thiol
  • p- menthene-8-thiol
  • 1-para- menthene-8-thiol 0.1% in grapefruit oil, natural
  • p- menthene-8-thiol 0.1% PG natural
  • p- menthene-8-thiol 1% in d'limonene natural
  • 1-p- menthene-8-thiol 1% in P.G.
  • 1-p- menthene-8-thiol 40% in p.g.
  • 1-p- menthene-8-thiol natural
  • 1-p- menthene-8-thiol natural 1% in d'limonene
  • 1-p- menthene-8-thiol natural 5% in ethyl alcohol
  • 1-p- menthene-8-thiol synthetic 1% in d'limonene
  • p- menthenethiol
  • para- menthenethiol
  • 1-p- menthetn-8-thiol 1% in DPM
  • 2-(4-methyl-1-cyclohex-3-enyl)propane-2-thiol
  • 2-(4-methylcyclohex-3-en-1-yl)propane-2-thiol
  • terpenyl mercaptane 1% limonene
  • terpinyl mercaptan
  • alpha,alpha,4-trimethyl cyclohex-3-ene-1-methane thiol
  • alpha,alpha,4-trimethyl cyclohex-3-ene-1-methanethiol
  • alpha,alpha,4-trimethyl-3-cyclohexene-1-methane thiol
  • a,a,4-trimethyl-3-cyclohexene-1-methanethiol
  • alpha,alpha,4-trimethyl-3-cyclohexene-1-methanethiol
  • a,a,4-trimethylcyclohex-3-ene-1-methanethiol
  • 2-(4-methyl-1-cyclohex-3-enyl)propane-2-thiol
  • 3-Cyclohexene-1-methanethiol, α,α,4-trimethyl-
  • α,α,4-Trimethyl-3-cyclohexene-1-methanethiol
  • 1-p-Menthene-8-thiol
  • 2-(4-Methylcyclohex-3-enyl)propane-2-thiol
  • Thioterpineol
  • 2-(4-Methylcyclohex-3-en-1-yl)propane-2-thiol

US / EU / FDA / JECFA / FEMA / Scholar / Patents

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Other Information

(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
HMDB (The Human Metabolome Database):HMDB35703
FooDB:FDB014423
Export Tariff Code:2930.90.9999
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View
Wikipedia:View
FAO:1-p-Menthene-8-thiol

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 170.31846618652
Specific gravity @ 25 °C
Pounds per Gallon 8.554 to 8.637
Refractive Index 1.43 to 1.44 @ 20 °C
Vapor Pressure 0.105 mmHg @ 25 °C
Flash Point TCC Value 93.33 °C TCC
logP (o/w) 4.196 est
Solubility
fats Yes
water, 5.485 mg/L @ 25 °C (est) Yes

Organoleptic Properties

Odor Type: Citrus
sulfurous, aromatic, grapefruit, naphthyl, resinous, woody, alliaceous, onion, garlic, tropical
Odor strength high , recommend smelling in a 0.10 % solution or less
Substantivity 105 hour(s) at 10.00 %
Luebke, William tgsc, (2009) At 1.00 % in triethyl citrate. sulfury aromatic grapefruit naphthyl resinous woody
Mosciano, Gerard P&F 23, No. 3, 55, (1998) At 1.00 %. Sulfurous, alliaceous, grapefruit, onion, garlic, tropical and woody
Flavor Type: Citrus
grapefruit, fresh, tropical, juicy, mango
Mosciano, Gerard P&F 23, No. 3, 55, (1998) At 20.00 ppm. Grapefruit, fresh, tropical, juicy and mango
Used in grapefruit flavours, and to add ripeness character to tropical fruit flavours, such as mango, blackcurrant, at 0.01ppb. Grapefruit

Occurrences

Potential Uses

Applications
Odor purposes Citrus, Currant black currant, Grape, Grapefruit, Mango, Pepper, Spice
Flavoring purposes Beverage, Durian, Tropical
Cosmetic purposes Perfuming agents

Safety Information

Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 36/38 - Irritating to skin and eyes.
S 02 - Keep out of the reach of children.
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 [sex: M,F] > 6000 mg/kg
(Mondino & Peano, 1982)

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 grapefruit mercaptan usage levels up to:
0.1000 % in the fragrance concentrate.
Maximised Survey-derived Daily Intakes (MSDI-EU): 37.00 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 1.00 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 0.15 (μg/person/day)
Threshold of Concern:1800 (μg/person/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. Update in publication number(s): 26
Click here to view publication 13
average usual ppmaverage maximum ppm
baked goods: 0.000300.00100
beverages(nonalcoholic): 0.000150.00015
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: 0.000300.00400
condiments / relishes: --
confectionery froastings: 0.000300.00200
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: 0.000300.00100
gelatins / puddings: 0.000300.00100
granulated sugar: --
gravies: --
hard candy: 0.000300.00200
imitation dairy: --
instant coffee / tea: --
jams / jellies: 0.000300.00100
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: 0.000300.00100
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: 0.000300.00200
soups: --
sugar substitutes: --
sweet sauces: --
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFSA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFSA, 2002i).
Note: mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm.
average usage mg/kgmaximum usage mg/kg
Dairy products, excluding products of category 02.0 (01.0): 0.000300.00100
Fats and oils, and fat emulsions (type water-in-oil) (02.0): --
Edible ices, including sherbet and sorbet (03.0): 0.000300.00100
Processed fruit (04.1): --
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): 0.000300.00100
Confectionery (05.0): 0.000300.00200
Chewing gum (05.3): 0.000300.00400
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 0.000300.00100
Bakery wares (07.0): 0.000300.00100
Meat and meat products, including poultry and game (08.0): 0.000300.00100
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0): --
Eggs and egg products (10.0): --
Sweeteners, including honey (11.0): --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0): --
Foodstuffs intended for particular nutritional uses (13.0): --
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 0.000300.00100
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 0.000150.00015
Ready-to-eat savouries (15.0): --
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0): --

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):

Flavouring Group Evaluation 8 (FGE.08)[1]: Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical group 20
View page or View pdf

Flavouring Group Evaluation 8, Revision 1 (FGE.08Rev1): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf

Flavouring Group Evaluation 91 (FGE.91): Consideration of simple aliphatic and aromatic sulphides and thiols evaluated by JECFA (53rd and 68th meetings) structurally related to aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups evaluated by EFSA in FGE.08Rev1 (2009)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 8, Revision 3 (FGE.08Rev3): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 91, Revision 1 (FGE.91Rev1): Consideration of simple aliphatic and aromatic sulphides and thiols evaluated by JECFA (53rd and 68th meetings) structurally related to aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups evaluated by EFSA in FGE.08Rev3 (2011)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 08, Revision 4 (FGE.08Rev4): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf

Statement on List of Representative Substances for Testing. The current Statement lays down a list of substances in sub-groups with representative substances for which additional data are required prior to their evaluation through the Procedure (Regulation (EC) No 1565/2000).
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 91, Revision 2 (FGE.91Rev2): Consideration of simple aliphatic and aromatic sulphides and thiols evaluated by the JECFA (53rd and 68th meetings) structurally related to aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups evaluated by EFSA in FGE.08Rev5 (2012)
View page or View pdf

Safety and efficacy of 8-mercapto-p-menthan-3-one and p-menth-1-ene-8-thiol belonging to chemical group 20 when used as flavourings for all animal species
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 91, Revision 3 (FGE.91Rev3): consideration of aliphatic, aromatic and a,ß-unsaturated sulfides and thiols evaluated by JECFA (53rd, 61st, 68th and 76th meetings), structurally related to substances in FGE.08Rev5
View page or View pdf

Safety of 31 flavouring compounds belonging to different chemical groups when used as feed additives for all animal species
View page or View pdf

EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :6427135
National Institute of Allergy and Infectious Diseases:Data
WGK Germany:2
2-(4-methyl-1-cyclohex-3-enyl)propane-2-thiol
Chemidplus:0071159905