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General Material Information

Preferred name 3-mercapto-2-methyl pentanol
Trivial Name 3-Mercapto-2-methylpentan-1-ol
Short Description 3-mercapto-2-methylpentan-1-ol (racemic)
Formula C6 H14 O S
CAS Number 227456-27-1
FEMA Number 3996
Flavis Number 12.238
FDA UNII 7XRY329G5S
Nikkaji Number J1.340.022I
MDL MFCD08741458
xLogP3-AA 1.60 (est)
NMR Predictor External link
JECFA Food Flavoring 1291 3-mercapto-2-methylpentan-1-ol (racemic)
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 227456-27-1 ; 3-MERCAPTO-2-METHYL-1-PENTANOL
Synonyms
  • racemic-3-mercapto-2-methyl pentan-1-ol
  • 3-mercapto-2-methylpenta-1-ol
  • 3-mercapto-2-methylpentan-1-ol
  • 3-mercapto-2-methylpentan-1-ol (racemic)
  • 3-mercapto-2-methylpentanol
  • 2-methyl-3-sulfanylpentan-1-ol
  • pentan-1-ol, 3-mercapto-2-methyl-
  • 1-pentanol, 3-mercapto-2-methyl-
  • 1-Pentanol, 3-mercapto-2-methyl-
  • 3-Mercapto-2-methyl-1-pentanol
  • 3-Mercapto-2-methylpentan-1-ol
  • 3-Sulfanyl-2-methylpentan-1-ol
  • 2-Methyl-3-sulfanyl-pentan-1-ol

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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):HMDB34878
FooDB:FDB013453
Export Tariff Code:2930.90.9999
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 134.2417755127
Specific gravity @ 25 °C
Pounds per Gallon 8.196 to 8.279
Refractive Index 1.48 to 1.49 @ 20 °C
Acid Value 1 max KOH/g
Vapor Pressure 0.061 mmHg @ 25 °C
Flash Point TCC Value 77.8 °C TCC
logP (o/w) 1.626 est
Solubility
alcohol Yes
water, slightly Yes
water, 3658 mg/L @ 25 °C (est) Yes
water No

Organoleptic Properties

Odor Type: Sulfurous
sulfurous, onion
General comment At 0.10 % in propylene glycol. sulfurous onion
Flavor Type: Alliaceous
alliaceous, brothy, burnt, cooked, meaty, metallic, roasted, sulfurous
General comment Alliaceous brothy burnt cooked meaty metallic roasted sulfurous

Occurrences

Potential Uses

Applications
Flavoring purposes Garlic, Onion

Safety Information

Safety information

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:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
flavoring agents
Recommendation for 3-mercapto-2-methyl pentanol usage levels up to:
not for fragrance use.
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.01 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.70 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 348 (μg/person/day)
NOEL (No Observed Effect Level): 0.7 (mg/kg bw per 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: 20
Click here to view publication 20
average usual ppmaverage maximum ppm
baked goods: 0.005000.05000
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: 0.003000.03000
cheese: --
chewing gum: --
condiments / relishes: 0.003000.03000
confectionery froastings: --
egg products: --
fats / oils: 0.005000.05000
fish products: 0.001000.01000
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: 0.005000.05000
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: 0.003000.03000
milk products: --
nut products: --
other grains: 0.001000.01000
poultry: --
processed fruits: --
processed vegetables: 0.001000.01000
reconstituted vegetables: 0.001000.01000
seasonings / flavors: 0.030001.00000
snack foods: 0.001000.01000
soft candy: --
soups: 0.003000.03000
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): 0.600002.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0): 0.040001.00000
Edible ices, including sherbet and sorbet (03.0): 0.500002.00000
Processed fruit (04.1): --
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): 0.200001.50000
Confectionery (05.0): 0.750002.00000
Chewing gum (05.3): --
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 0.620001.00000
Bakery wares (07.0): 0.800002.00000
Meat and meat products, including poultry and game (08.0): 0.730001.00000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0): 0.100001.00000
Eggs and egg products (10.0): 0.080001.00000
Sweeteners, including honey (11.0): --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0): 0.450001.00000
Foodstuffs intended for particular nutritional uses (13.0): --
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 0.500001.00000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 0.100002.00000
Ready-to-eat savouries (15.0): 1.100005.00000
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 74 (FGE.74)[1]: Consideration of Simple Aliphatic Sulphides and Thiols evaluated by JECFA (61st meeting) Structurally related to Aliphatic and Alicyclic Mono-, Di-, Tri-, and Polysulphides with or without Additional Oxygenated Functional Groups from Chemical Group 20 evaluated by EFSA in FGE.08 (2008)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 74, Revision 1 (FGE.74Rev1): Consideration of Simple Aliphatic Sulphides and Thiols evaluated by the JECFA (53rd and 61st meeting) Structurally related to Aliphatic and Alicyclic Mono-, Di-, Tri-, and Polysulphides with or without Additional Oxygenated Functional Groups from Chemical Group 20 evaluated by EFSA in FGE.08Rev1 (2009)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 74, Revision 2 (FGE.74Rev2): Consideration of Simple Aliphatic Sulphides and Thiols evaluated by the JECFA (53rd and 61st meeting) Structurally related to Aliphatic and Alicyclic Mono-, Di-, Tri-, and Polysulphides with or without Additional Oxygenated Functional Groups from Chemical Group 20 evaluated by EFSA in FGE.08Rev3 (2011)
View page or View pdf

EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 74, Revision 4 (FGE.74Rev4): Consideration of aliphatic sulphides and thiols evaluated by JECFA (53rd and 61st meeting) structurally related to aliphatic and alicyclic mono-, di-, tri- and polysulphides with or without additional oxygenated functional groups from chemical group 20 evaluated by EFSA in FGE.08Rev5
View page or View pdf

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EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :6430888
National Institute of Allergy and Infectious Diseases:Data
2-methyl-3-sulfanylpentan-1-ol
Chemidplus:0227456271