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General Material Information

Preferred name 3-mercapto-2-methyl pentanal
Trivial Name 3-Mercapto-2-methylpentanal
Short Description 3-mercapto-2-methylpentanal
Formula C6 H12 O S
CAS Number 227456-28-2
FEMA Number 3994
Flavis Number 12.239
FDA UNII 04LG18GGDN
Nikkaji Number J1.340.023G
MDL MFCD12911412
xLogP3-AA 1.50 (est)
NMR Predictor External link
JECFA Food Flavoring 1292 3-mercapto-2-methylpentanal
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 227456-28-2 ; 3-MERCAPTO-2-METHYLPENTANAL
Synonyms
  • 3-mercapto-2-methyl-1-pentanal
  • 3-mercapto-2-methylpentanal
  • mercaptovert (Firmenich)
  • mercaptovert natural (Firmenich)
  • 2-methyl-3-sulfanyl pentanal
  • 2-methyl-3-sulfanylpentanal
  • pentanal, 3-mercapto-2-methyl-
  • 2-methyl-3-sulfanylpentanal
  • 3-Mercapto-2-methylpentanal

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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):HMDB35176
FooDB:FDB013816
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 132.22584533691
Specific gravity @ 25 °C
Pounds per Gallon 9.111 to 9.178
Refractive Index 1.523 to 1.529 @ 20 °C
Boiling Point 98 to 100°C @ 10 mm Hg
Acid Value 1 max KOH/g
Vapor Pressure 0.98 mmHg @ 25 °C
Flash Point TCC Value 61.67 °C TCC
logP (o/w) 1.673 est
Solubility
alcohol Yes
water, 3912 mg/L @ 25 °C (est) Yes
water No

Organoleptic Properties

Odor Type: Sulfurous
sulfurous, onion, savory, grilled, roasted, beefy, cooked, chicken, alliaceous, garlic, fruit tropical fruit, dairy
General comment At 0.10 % in propylene glycol. sulfurous onion
Mosciano, Gerard, (2009) At 0.10 %. sulfurous, , savory grilled or roasted beef and cooked chicken like, alliaceous, garlic with tropical fruit and cultured dairy nuances
Flavor Type: Sulfurous
sulfurous, alliaceous, roasted, savory, cooked, onion, garlic, fruit tropical fruit, mango, passion fruit
Mosciano, Gerard, (2009) At 1.00 ppm. Sulfureous, alliaceous, roasted savory with cooked onion and sauteed garlic notes and tropical fruit nuances of mango and passionfruit
MERCAPTOVERT™ is a powerful combination of Mercaptomethylpentanal and green notes. It brings meaty and gravy profile to savory applications. It’s unique tropical sulfury nuance nicely complements grapefruit top notes. Very powerful meaty, brothy, tropical, grapefruit (highly diluted) notes

Occurrences

Potential Uses

Applications
Odor purposes Passion fruit
Flavoring purposes Beef, Buchu leaf, Chicken, Dairy, Garlic, Mango, Onion, Tropical

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 pentanal usage levels up to:
not for fragrance use.
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.02 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 4.00 (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: 0.050000.50000
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: 0.030003.00000
cheese: --
chewing gum: --
condiments / relishes: 0.030000.30000
confectionery froastings: --
egg products: --
fats / oils: 0.050000.50000
fish products: 0.010000.10000
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: 0.050000.50000
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: 0.030000.30000
milk products: --
nut products: --
other grains: 0.010000.10000
poultry: --
processed fruits: --
processed vegetables: 0.010000.10000
reconstituted vegetables: --
seasonings / flavors: 0.030001.00000
snack foods: 0.010000.10000
soft candy: --
soups: 0.030000.30000
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)
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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 :527435
National Institute of Allergy and Infectious Diseases:Data
2-methyl-3-sulfanylpentanal
Chemidplus:0227456282