propyl 2-mercaptopropionate
propyl 2-sulfanylpropanoate
 
Notes:
Used as a food additive [EAFUS]
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propyl 2-sulfanylpropanoate (Click)
CAS Number: 19788-50-2Picture of molecule
FDA UNII: A6API9I47Z
Molecular Weight: 148.22504000
Formula: C6 H12 O2 S
NMR Predictor: Predict (works with chrome or firefox)
EFSA/JECFA Comments: Specifications (Flavour Industry, 2007j). Racemate (EFFA, 2010a).
Category: flavoring agents
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist: Search
Google Patents: Search
US Patents: Search
EU Patents: Search
Pubchem Patents: Search
JECFA Food Flavoring: 1667  propyl 2-mercaptopropionate
Flavis Number: 12.267 (Old)
DG SANTE Food Flavourings: 12.267  propyl 2-mercaptopropionate
FEMA Number: 4207  propyl 2-mercaptopropionate
FDA Mainterm: PROPYL 2-MERCAPTOPROPIONATE
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Physical Properties:
Appearance: colorless clear liquid (est)
Assay: 97.30 to 100.00 % 
Additional Assay Information: racemate
Food Chemicals Codex Listed: No
Specific Gravity: 1.01400 to 1.02000 @  25.00 °C.
Pounds per Gallon - (est).: 8.437 to  8.487
Refractive Index: 1.44700 to 1.45300 @  20.00 °C.
Boiling Point: 193.00 °C. @ 760.00 mm Hg
Vapor Pressure: 0.472000 mm/Hg @ 25.00 °C. (est)
Flash Point: 166.00 °F. TCC ( 74.40 °C. ) (est)
logP (o/w): 2.062 (est)
Soluble in:
 alcohol
 water, slightly
 water, 2642 mg/L @ 25 °C (est)
Insoluble in:
 water
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Organoleptic Properties:
 
Odor Type: meaty
 
Odor Strength: high ,
recommend smelling in a 0.10 % solution or less
 
 cooked  meaty roasted meaty  meaty  potato baked potato  
Odor Description:
at 0.10 % in propylene glycol. 
cooked roasted meat baked potato
 
 
Flavor Type: meaty
 
 earthy  potato baked potato  peanut roasted peanut  
Taste Description:
earthy baked potato roasted peanut
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
None found
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Suppliers:
Axsyn
For experimental / research use only.
Propanoic acid,2-mercapto-, propyl ester
BOC Sciences
For experimental / research use only.
Propyl 2-mercaptopropionate
Endeavour Specialty Chemicals
Propyl-2-mercaptopropionate 98% F&F
Speciality Chemical Product Groups
Robinson Brothers
Propyl-2-mercaptopropionate F&F
https://www.robinsonbrothers.uk/chemistry-competences
Treatt
Propyl 2-mercaptopropionate
Kosher
Treatt
Propyl-2-mercaptopropionate 1% in TEC
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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
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Safety in Use Information:
Category: flavoring agents
Recommendation for propyl 2-mercaptopropionate usage levels up to:
 not for fragrance use.
 
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.012 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.10 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): ND (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: 22
Click here to view publication 22
 average usual ppmaverage maximum ppm
baked goods: --
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: --
condiments / relishes: 0.040000.10000
confectionery froastings: --
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: 0.040000.10000
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: 0.040000.10000
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: 0.040000.10000
snack foods: 0.040000.10000
soft candy: --
soups: 0.040000.10000
sugar substitutes: --
sweet sauces: --
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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 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 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 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
EPI System: View
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 22445528
National Institute of Allergy and Infectious Diseases: Data
 propyl 2-sulfanylpropanoate
Chemidplus: 0019788502
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References:
 propyl 2-sulfanylpropanoate
NIST Chemistry WebBook: Search Inchi
Pubchem (cid): 22445528
Pubchem (sid): 135358519
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
FDA Everything Added to Food in the United States (EAFUS): View
HMDB (The Human Metabolome Database): HMDB32495
FooDB: FDB010143
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
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Potential Blenders and core components note
 
For Odor
alliaceous
 dimethyl trisulfideFL/FR
 methyl furfuryl disulfideFL/FR
 rum etherFL/FR
chocolate
2,6-dimethyl pyrazineFL/FR
coffee
 coffee difuranFL/FR
2-methyl-3-,5 or 6-(furfuryl thio) pyrazineFL/FR
 nutty pyrazineFL/FR
fermented
 ethyl crotonateFL/FR
fruity
 tropical thiazoleFL/FR
 tropical trithianeFL/FR
green
2-heptyl furanFL/FR
4-hexenolFL/FR
(E,Z)-2,6-nonadienalFL/FR
 meaty dithianeFL/FR
4-methyl nonanoic acidFL/FR
 sulfurolFL/FR
 sulfuryl acetateFL/FR
moldy
 strawberry furanone methyl etherFL/FR
musty
 hazelnut pyrazineFL/FR
2-ethyl pyrazineFL/FR
2-ethyl-4-methyl thiazoleFL/FR
2-methyl-3-(methyl thio) pyrazineFL/FR
phenolic
2,3-dimethyl benzofuranFL/FR
ortho-guaiacolFL/FR
4-vinyl phenolFL/FR
 pyroligneous acidsFL/FR
 benzothiazoleFL/FR
 ethyl 2-mercaptopropionateFL/FR
 ethyl 3-mercaptopropionateFL/FR
 fish thiolFL/FR
2-mercaptopropionic acidFL/FR
4-methyl 4-mercaptopentan-2-one 1% solutionFL/FR
2-(methyl thio) phenolFL/FR
tobacco
 methyl benzoxoleFL/FR
 
For Flavor
 
No flavor group found for these
4-acetyl-2-methyl pyrimidineFL
 amyl mercaptanFL
1,2-butane dithiolFL
2-(2-butyl)-4,5-dimethyl-3-thiazolineFL
2,5-diethyl thiazoleFL
3,6-diethyl-1,2,4,5-tetrathiane and 3,5-diethyl-1,2,4-trithiolane mixture 1% in vegetable oil triglyceriFL
 dihydro-2,4,6-trimethyl-1,3,5(4H)-dithiazineFL
 dimethyl tetrasulfideFL
2,6-dimethyl-3-((2-methyl-3-furyl)thio)-4-heptanoneFL
bis(2,5-dimethyl-3-furyl) disulfideFL
(Z+E)-2,5-dimethyl-3-tetrahydrofuran thiolFL
(Z+E)-2,5-dimethyl-3-thioacetoxytetrahydrofuranFL
2,5-dimethyl-3-thiofuroyl furanFL
S-ethyl 2-acetyl aminoethane thioateFL
 ethyl 3-mercaptopropionateFL/FR
3-(ethyl thio) butanolFL
2-ethyl-3-methyl thiopyrazineFL
(Z+E)-5-ethyl-4-methyl-2-(2-butyl) thiazolineFL
(Z+E)-5-ethyl-4-methyl-2-(2-methyl propyl) thiazolineFL
2-hexyl thiopheneFL
1-(3-hydroxy-5-methyl-2-thienyl) ethanoneFL
3-mercapto-3-methyl butyl formateFL
4-mercapto-3-methyl-2-butanolFL
4-methyl 4-mercaptopentan-2-one 1% solutionFL/FR
 methyl dihydrofuran thiolFL
2-methyl thiazolidineFL
2-methyl-1-butane thiolFL
4-methyl-2-(methyl thiomethyl)-2-hexenalFL
2-methyl-2-thiazolineFL
2-methyl-3-,5 or 6-(furfuryl thio) pyrazineFL/FR
2-methyl-3-(methyl thio) pyrazineFL/FR
3-((2-methyl-3-furyl)thio)-4-heptanoneFL
4-((2-methyl-3-furyl)thio)-5-nonanoneFL
1,9-nonane dithiolFL
1-phenethyl mercaptanFL
1-phenyl-3(5)-propyl pyrazoleFL
3-isopropenyl pentane dioic acidFL
isopropyl disulfideFL
2-isopropyl-3-(methyl thio) pyrazineFL
 thiazoleFL
3-thienyl mercaptanFL
 thioacetic acidFL
5-acetyl-2,3-dihydro-1,4-thiazineFL
S-allyl-laevo-cysteineFL
3,5-diisopropyl-1,2,4-trithiolaneFL
3,5-dimethyl-1,2,4-trithiolaneFL
3,7-dimethyl-2,6-octadien-1-yl cyclopropyl carboxamideFL
2,4-dimethyl-3-oxazolineFL
4-mercapto-2-pentanone 1% in acetoinFL
(±)-3-(methyl thio) heptanalFL
3-(methyl thio) methyl thiopheneFL
2-methyl-1-methyl thio-2-buteneFL
 pyrrolidino-(1,2E)-4H-2,4-dimethyl-1,3,5-dithiazineFL
1-(2-thienyl) butanoneFL
alliaceous
 allyl disulfideFL
 allyl mercaptanFL
1,3-butane dithiolFL
 cyclopentyl mercaptanFL
 dimethyl trisulfideFL/FR
3-mercapto-2-pentanoneFL
3-tetrahydrothiophenoneFL
 tropical thiazoleFL/FR
burnt
 bacon dithiazineFL
1,6-hexane dithiolFL
 rum etherFL/FR
chemical
2,3-dimethyl benzofuranFL/FR
2,5-dimethyl furanFL
coffee
 coffee difuranFL/FR
2-ethyl-4-methyl thiazoleFL/FR
 methyl furfuryl disulfideFL/FR
earthy
 difurfuryl sulfideFL
1,8-octane dithiolFL
eggy
isopropyl mercaptanFL
fatty
2-heptyl furanFL/FR
4-methyl nonanoic acidFL/FR
2-pentyl thiopheneFL
fruity
 tropical trithianeFL/FR
green
4-methyl thiazoleFL
(E,Z)-2,6-nonadienalFL/FR
4-penten-1-yl acetateFL
meaty
4-allyl-2,6-dimethoxyphenolFL
 benzothiazoleFL/FR
2,6-dimethyl thiophenolFL
2,5-dimethyl-3-furan thiolFL
1,1-ethane dithiol 1% in ethanol 94.5% / ethyl acetate 4%FL
 furfuryl 2-methyl-3-furyl disulfideFL
 meaty dithianeFL/FR
3-mercapto-2-butanoneFL
(R,S)-2-mercapto-3-butanolFL
2-mercaptomethyl pyrazineFL
2-mercaptopropionic acidFL/FR
2-methyl 3-(methyl thio) furanFL
2-(methyl thio) phenolFL/FR
 methyl thiofuryl butanalFL
12-methyl tridecanalFL
bis(2-methyl-3-furyl) disulfideFL
S-(2-methyl-3-furyl) ethane thioateFL
2-methyl-3-tetrahydrofuran thiolFL
2-methyl-3-thioacetoxytetrahydrofuranFL
 phenyl mercaptanFL
 pyrazinyl ethane thiolFL
2-pyridinyl methane thiolFL
 sulfurolFL/FR
 sulfuryl acetateFL/FR
 thialdineFL
ortho-thiocresolFL
ortho-thioguaiacolFL
metallic
2,5-dihydroxy-1,4-dithianeFL
4-hexenolFL/FR
moldy
 strawberry furanone methyl etherFL/FR
musty
 hazelnut pyrazineFL/FR
nutty
3-acetyl-2,5-dimethyl thiopheneFL
2-acetyl-4-methyl thiazoleFL
2-butyl-2-butenalFL
3,5-diethyl-2-methyl pyrazineFL
2,5-diethyl-3-methyl pyrazineFL
2,6-dimethyl pyrazineFL/FR
2-ethyl pyrazineFL/FR
 methyl benzoxoleFL/FR
 nutty pyrazineFL/FR
 nutty thiazoleFL
onion
 ethyl 2-mercaptopropionateFL/FR
 furfuryl isopropyl sulfideFL
phenolic
2-ethyl benzene thiolFL
4-vinyl phenolFL/FR
popcorn
2-propionyl-2-thiazolineFL
radish
3-(methyl thio) propyl mercaptoacetateFL
roasted
 hexyl mercaptanFL
 lactoyl ethanolamineFL
 lactoyl ethanolamine phosphateFL
rummy
 ethyl crotonateFL/FR
smoky
 prosopis juliflora wood extractFL
 pyroligneous acidsFL/FR
sulfurous
2,3-butane dithiolFL
 ethyl methyl sulfideFL
S-ethyl thioacetateFL
 fish thiolFL/FR
 methyl 2-methyl-3-furyl disulfideFL
3-methyl-2-butane thiolFL
2-naphthyl mercaptanFL
 potato butanoneFL
 roasted butanolFL
2,4,6-trithiaheptane 10% in triacetinFL
vegetable
 tyramineFL
wasabi
2-(methyl thio) ethyl acetateFL
woody
ortho-guaiacolFL/FR
yeasty
 faex extractsFL
 
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Potential Uses:
None Found
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Occurrence (nature, food, other): note
 found in nature
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Synonyms:
2-mercaptopropanoic acid propyl ester
 propanoic acid, 2-mercapto-, propyl ester
 propyl 2-sulfanyl propanoate
 propyl 2-sulfanylpropanoate
 propyl-2-mercaptopropionate
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Articles:
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