S-(methyl thio) propionate
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IUPAC name :S-methyl propanethioate
InChI :InChI=1/C4H8OS/c1-3-4(5)6-2/h3H2,1-2H3
InChIKey :AIILTVHCLAEMDA-UHFFFAOYAB
SMILES :CCC(=O)SC
cas number :5925-75-7
fema number :4172
jecfa number :1678
fl. number :12.165
molar refractivity :28.60 ± 0.3 cm3
parachor :247.0 ± 4.0 cm3
index of refraction :1.453 ± 0.02
surface tension :29.8 ± 3.0 dyne/cm
density :0.985 ± 0.06 g/cm3
polarizability :11.34 ± 0.5 10-24cm3
XlogP : 1.00
molecular weight : 104.1707200 (IUPAC)
formula :C4 H8 O S
NMR Predictor :Predict
 
 
export tariff code :unspecified
fda reg :unspecified

Suppliers :
Endeavour :S-Methyl thiopropionate
99%
Frutarom :METHYL THIOPROPIONATE
≥99.00%, NI, Kosher
Odor:  Alliaceous, Dairy, Sulphurus, Vegetable
Penta :S-methyl thiopropionate
Treatt :S-Methyl thiopropionate

organoleptics :
odor type :sulfurous
odor strength :high ,
recommend smelling in a 0.10 % solution or less
odor description :
at 0.10 % in dipropylene glycol.  
alliaceous dairy sulfurous milky

properties :
appearence :colorless clear liquid
assay : 95.00 to 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :0.89100 to 0.89700 @ 25.00 °C.
pounds per gallon - calc. : 7.414 to 7.464
refractive index :1.45900 to 1.46500 @ 20.00 °C.
boiling point : 120.00 to 122.00 °C. @ 760.00 mm Hg
acid value : 1.00  max.  KOH/g
flash point : 79.00  °F.  TCC  ( 26.11 °C. )
logP (o/w) : 1.26

safety :
most important hazard(s) :Xi - Irritant
  R 10 - Flammable.
R 36/37/38 - Irritating to eyes, respiratory system, and skin.
S 02 - Keep out of the reach of children.
S 16 - Keep away from sources of ignition - No Smoking.
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 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
Oral Toxicity(LD50) :
  Not determined
Dermal Toxicity(LD50) :
  Not determined
Inhalation Toxicity(LC50) :
  Not determined
 

safety in use :
Maximised Survey-derived Daily Intakes (MSDI-EU) :0.012 (μg/capita/day)
modified Theoretical Added Maximum Daily Intake (mTAMDI) :110 (μg/person/day)
Threshold of concern :1800 (μg/person/day)
Structure Class :II
 
recommendation for S-(methyl thio) propionate usage levels up to :
 not for fragrance use.
 
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 on the "LIBRARY" link.
publication number : 22
 average usual ppmaverage maximum ppm
baked goods : 0.500002.00000
beverages(nonalcoholic) : 0.200001.00000
beverages(alcoholic) : 0.200001.00000
breakfast cereal : 0.200000.50000
cheese : 0.500002.00000
chewing gum : 0.200002.00000
condiments / relishes : 0.200001.00000
confectionery froastings : 0.200002.00000
egg products : --
fats / oils : --
fish products : --
frozen dairy : 0.100000.50000
fruit ices : 0.100000.50000
gelatins / puddings : 0.200001.00000
granulated sugar : --
gravies : --
hard candy : 0.500002.00000
imitation dairy : 0.200001.00000
instant coffee / tea : 0.200001.00000
jams / jellies : 0.200001.00000
meat products : --
milk products : 0.100000.50000
nut products : 0.200001.00000
other grains : --
poultry : --
processed fruits : 0.100000.50000
processed vegetables : --
reconstituted vegetables : --
seasonings / flavors : 10.00000100.00000
snack foods : 0.200001.00000
soft candy : 0.200002.00000
soups : --
sugar substitutes : --
sweet sauces : 0.200001.00000
 
 
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFFA, 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 (EFFA, 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) : 0.400002.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0) : 0.200001.00000
Edible ices, including sherbet and sorbet (03.0) : 0.400002.00000
Processed fruit (04.1) : 0.300001.50000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) : --
Confectionery (05.0) : 0.400002.00000
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) : 0.200001.00000
Bakery wares (07.0) : 0.400002.00000
Meat and meat products, including poultry and game (08.0) : 0.100000.40000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) : 0.100000.40000
Eggs and egg products (10.0) : --
Sweeteners, including honey (11.0) : --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0) : 0.240001.00000
Foodstuffs intended for particular nutritional uses (13.0) : 0.400002.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1) : 0.100000.30000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) : 0.400002.00000
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) : 0.200001.00000

safety references :
European Food Safety Athority(efsa) :Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
EPI System :view
WISER :UN 1993
 
WGK Germany :3
 
 
 
 S-methyl propanethioate
chemidplus :5925-75-7
EPA Substance Registry Services :5925-75-7

references :
 S-methyl propanethioate
fl. number :12.165
jecfa number :1678
NIST Chemistry WebBook :1974796016
pubchem :10528681

other :
VCF-Online: VCF Volatile Compounds in Food
synonyms :
S-methyl propane thioate
S-methyl propanethioate
S-methyl thiopropionate
 propane thioic acid S-methyl ester

soluble in :
 alcohol
 water, slightly

insoluble in :
 water

(odor and/or flavor) blends with :
 acetoin
 acetyl nonyryl
 allyl alcohol
 allyl disulfide
 allyl mercaptan
 allyl methyl disulfide
 allyl methyl sulfide
 allyl methyl trisulfide
 allyl propyl disulfide
 allyl propyl trisulfide
 allyl thiopropionate
isoamyl mercaptan
 asafetida absolute
 asafetida oil
 benzyl mercaptan
1,3-butane dithiol
 butyl butyryl lactate
isobutyl methyl ketone
 butyric acid
 coconut decanone
 cyclopentyl mercaptan
 dairy lactone
delta-decalactone
 diallyl polysulfides
 diallyl tetrasulfide
 diallyl trisulfide
 dicyclohexyl disulfide
 diethyl disulfide
 diethyl trisulfide
 dimethyl tetrasulfide
 dipropyl sulfide
2,5-dithiahexane
 ethyl 3-(furfuryl thio) propionate
2-ethyl butyric acid
 ethyl isothiocyanate
 ethyl methyl trisulfide
 ethyl propyl disulfide
 ethyl propyl trisulfide
 furfuryl methyl sulfide
2-furyl acetone
 garlic oil china
 garlic oleoresin
 heptanal 2,3-butane diol acetal
(R*,S*)-2-mercapto-3-butanol
 methyl (Z)-5-octenoate
 methyl 3-mercaptobutanoate
3-methyl crotonic acid
 methyl furfuryl disulfide
4-methyl octanoic acid
bis(methyl thio) methane
3-(methyl thio) methyl thiophene
2-methyl-1,3-dithiolane
 nonanoic acid
delta-octalactone
gamma-octalactone
 onion oleoresin
1-penten-3-ol
4-pentenyl isothiocyanate
 phenyl mercaptan
 propionic acid
isopropyl disulfide
isopropyl mercaptan
delta-tetradecalactone
3-tetrahydrothiophenone
 thiophene
 tonka bean oleoresin
2-tridecanone
 vanillic acid

(odor and/or flavor) used in :
 butter
 cheese
 cream
 cream ice cream
 cream sour cream
 custard
 dairy
 fish
 fruit tropical fruit
 cheese ghee cheese
 milk
 milk buttermilk
 milk malted milk
 tomato
 yogurt

natural occurrence in :
cheese
fish oil



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