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
(EINECS) number :228-394-1
cas number :6258-63-5
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
formula :C5 H6 S2
 
 
export tariff code :unspecified
fda reg :unspecified
 

Suppliers :
Givaudan :2-Thenylmercaptan
 ≥99%, NI, Kosher
 
Oxford Chemicals Ltd :THENYL MERCAPTAN
 ≥99.00%, NI, Kosher
 
 

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 : 99.00 - 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :1.16500 - 1.17100 @ 25.00 °C.
pounds per gallon - calc. : 9.694 to 9.744
refractive index :1.57100 - 1.57800 @ 20.00 °C.
boiling point : 166.00 °C. @ 760.00 mm Hg
logp : 2.42

safety :
Oral Toxicity(LD50) : Not determined
Dermal Toxicity(LD50) : Not determined
Maximised Survey-derived Daily Intakes (MSDI-EU) :0.0073 (μg/capita/day)
modified Theoretical Added Maximum Daily Intake (mTAMDI) :74 (μg/person/day)
Threshold of concern :90 (μg/person/day)
  
flash point ( Deg. F. ) : 177.00  °F.  TCC  ( 80.56 °C. )
  
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.
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) : --
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 links :
(EINECS) number :228-394-1
chemidplus :006258635
epa-srs :6258-63-5
  

other :
 

references :
fl. number :15.108
pubchem :657418
NIST Chemistry WebBook :112963220
  
synonyms :
 coffee thiol
2-thienyl mercaptan
2-thienyl thiol
 thiophen-2-yl methane thiol
2-thiophene methane thiol
 thiophene-2-methane thiol
soluble in :
 alcohol
 water, very slightly
insoluble in :
 water
(odor and/or flavor) blends with :
 coffee difuran
2,5-dimethyl-3-thiofuroyl furan
 furfuryl mercaptan
 furfuryl methyl ether
2-methyl-3-,5 or 6-(furfuryl thio) pyrazine
2-thiophene thiol
(odor and/or flavor) used in :
 burnt
 caramel
 coffee
 fish
natural occurrence in :
found in nature



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