2-thienyl mercaptan
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IUPAC name :thiophen-2-ylmethanethiol
InChI :InChI=1/C5H6S2/c6-4-5-2-1-3-7-5/h1-3,6H,4H2
InChIKey :GCZQHDFWKVMZOE-UHFFFAOYAB
SMILES :C1=CSC(=C1)CS
cas number :6258-63-5
(EINECS) number :228-394-1
fema number :3258
fl. number :15.108
molar refractivity :37.44 ± 0.3 cm3
parachor :279.1 ± 4.0 cm3
index of refraction :1.601 ± 0.02
surface tension :42.5 ± 3.0 dyne/cm
density :1.191 ± 0.06 g/cm3
polarizability :14.84 ± 0.5 10-24cm3
XlogP : 1.50
molecular weight : 130.2311400 (IUPAC)
formula :C5 H6 S2
NMR Predictor :Predict
 
 
export tariff code :unspecified
fda reg :unspecified

Suppliers :
Frutarom :THENYL MERCAPTAN
≥99.00%, NI, Kosher
Odor:  Coffee, Fish, Roast
Givaudan :2-Thenylmercaptan
≥99%, NI, Kosher
Odor:  Roast,Coffee
Penta :2-thienyl mercaptan

organoleptics :
odor type :coffee
odor strength :high ,
recommend smelling in a 0.10 % solution or less
odor description :
at 0.10 % in propylene glycol.  
roast coffee

properties :
appearence :colorless to pale yellow clear liquid
assay : 95.00 to 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :1.16500 to 1.17100 @ 25.00 °C.
pounds per gallon - calc. : 9.694 to 9.744
refractive index :1.57100 to 1.57800 @ 20.00 °C.
boiling point : 166.00 °C. @ 760.00 mm Hg
flash point : 177.00  °F.  TCC  ( 80.56 °C. )
logP (o/w) : 2.42

safety :
most important hazard(s) :Xn - Harmful.
  R 22 - Harmful if swallowed.
S 02 - Keep out of the reach of children.
S 20/21 - When using do not eat, drink or smoke.
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) :0.0073 (μg/capita/day)
modified Theoretical Added Maximum Daily Intake (mTAMDI) :78 (μg/person/day)
Threshold of concern :90 (μg/person/day)
Structure Class :III
 
recommendation for 2-thienyl mercaptan usage levels up to :
 not for fragrance use.
recommendation for 2-thienyl mercaptan usage levels up to :
  200.0000 ppm in the flavor.
 
 
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) : 0.200001.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0) : 0.100000.50000
Edible ices, including sherbet and sorbet (03.0) : 0.200001.00000
Processed fruit (04.1) : 0.200001.00000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) : --
Confectionery (05.0) : 0.200001.00000
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) : 0.100000.50000
Bakery wares (07.0) : 0.200001.00000
Meat and meat products, including poultry and game (08.0) : 0.100000.20000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) : 0.100000.20000
Eggs and egg products (10.0) : --
Sweeteners, including honey (11.0) : --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0) : 0.100000.50000
Foodstuffs intended for particular nutritional uses (13.0) : 0.200001.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1) : 0.100000.50000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) : 0.200001.00000
Ready-to-eat savouries (15.0) : 0.400002.00000
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0) : 0.100000.50000

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
 
WGK Germany :3
 
 
 
 thiophen-2-ylmethanethiol
(EINECS) number :228-394-1
chemidplus :006258635
EPA Substance Registry Services :6258-63-5

references :
 thiophen-2-ylmethanethiol
fl. number :15.108
NIST Chemistry WebBook :112963220
pubchem :657418

other :
VCF-Online: VCF Volatile Compounds in Food
synonyms :
 coffee thiol
2-thienyl thiol
 thiophen-2-yl methane thiol
 thiophen-2-ylmethanethiol
2-thiophene methane thiol
 thiophene-2-methane thiol

soluble in :
 alcohol
 water, slightly

insoluble in :
 water

(odor and/or flavor) blends with :
 acetoin
2-acetyl furan
 acetyl propionyl
2-acetyl pyrazine
3-acetyl-2,5-dimethyl furan
2-acetyl-3,4,5,6-tetrahydropyridine
2-acetyl-3,5(or 6)-dimethyl pyrazine
 allyl 2-furoate
isoamyl 3-(2-furan) propionate
 benzothiazole
 benzyl disulfide
 benzyl mercaptan
 butyl levulinate
 butyl mercaptan
2-oxobutyric acid
gamma-butyrolactone
 caramel dione
 caramel furanone
 caramel pentadione
 cocoa pyrazine
 coffee difuran
 coffee dione
 coffee pyrazine
 cyclohexyl acetic acid
 diacetyl
 dicyclohexyl disulfide
2,5-diethyl tetrahydrofuran
 difurfuryl ether
 difurfuryl sulfide
 diisoamyl thiomalate
alpha,alpha-dimethyl anisyl acetone
2,3-dimethyl pyrazine
2,6-dimethyl pyrazine
2,4-dimethyl thiazole
4,5-dimethyl-2-ethyl-3-thiazoline
2,5-dimethyl-3-thiofuroyl furan
 ethyl (E)-crotonate
 ethyl 2-hydroxy-2-methyl butyrate
 ethyl 3-(furfuryl thio) propionate
 ethyl 4-pentenoate
 ethyl cyclopentenolone
 ethyl maltol
 ethyl methyl sulfide
 ethyl pyruvate
S-ethyl thioacetate
(E)-ethyl tiglate
 ethyl vanillin
5-ethyl-2,3,4,5-tetramethyl-2-cyclohexen-1-one
5-ethyl-3,4,5,6-tetramethyl cyclohexen-2-one
2-ethyl-3,5(6)-dimethyl pyrazine mixture
 fenugreek absolute
 filbert heptenone
 furfuryl acetone
 furfuryl alcohol
 furfuryl isopropyl sulfide
 furfuryl mercaptan
 furfuryl methyl ether
 furfuryl octanoate
 furfuryl propionate
1-furfuryl pyrrole
 furfuryl thioacetate
S-furfuryl thioformate
 furfuryl thiopropionate
 furfuryl valerate
 geranyl crotonate
gamma-heptalactone
3,4-hexane dione
1-hydroxy-2-butanone
5-hydroxymethyl furfural
 immortelle absolute
 levulinic acid
 maltol
 maltyl propionate
 mango furanone
 maple furanone
 maple lactone
 menthofuran
 menthone lactone
 mesitene lactone
2-methyl 3-(methyl thio) furan 10% in triacetin
2-methyl 5-(methyl thio) furan
3-methyl butyl 2-furyl butyrate
2-methyl butyraldehyde
 methyl cyclopentenolone
5-methyl furfural
 methyl furfuryl disulfide
2-methyl quinoxaline
5-methyl quinoxaline
2-methyl thio-3,5 or 6-methyl pyrazine
4-methyl-2,6-dimethoxyphenol
2-methyl-3-,5 or 6-(furfuryl thio) pyrazine
2-methyl-5-isopropyl pyrazine
2-methyl-5-vinyl pyrazine
 nutty cyclohexenone
 peanut oxazole
2-pentanoyl furan
2-propanoyl thiophene
 rosefuran
 shoyu furanone
dextro-sorbitol
 strawberry furanone
 strawberry furanone acetate
dextro,laevo-tartaric acid
 tea pyrrole
 tetrahydrofurfuryl acetate
 tetrahydrofurfuryl alcohol
2,3,5,6-tetramethyl pyrazine
2-thiophene thiol
(E)-tiglic acid
 toffee furanone
 tonka bean absolute
 tonka bean resinoid
2,4,5-trimethyl thiazole
(E,E)-2,4-undecadien-1-al
2,4-undecadien-1-al
 vanilla oleoresin
 vanillyl isobutyrate
 wormwood oil
 wormwood oil cuba
 wormwood oil italy
 wormwood oil poland
2,6-xylenol

(odor and/or flavor) used in :
 burnt
 caramel
 coffee
 fish

natural occurrence in :
found in nature



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