8.08159 EMD Millipore


Thiophenol for synthesis. CAS 108-98-5, pH 5 (H₂O, 20 °C) (saturated aqueous solution)., for synthesis

Synonym: Phenyl mercaptan, Mercaptobenzene

  • CAS Number 108-98-5

  • Linear Formula C₆H₆S

  • Molecular Weight 110.18 g/mol

  •  EC Number 203-635-3



Related Categories Biochemicals and Reagents More...
packaging   1 l in Glass bottle (8081591000)
  250 ml in Glass bottle (8081590250)
  5 ml in Glass bottle (8081590005)
bp   168.3 °C (1013 hPa)
vapor pressure   2.7 hPa (25 °C)
solubility   0.94 g/l
density   1.08 g/cm3 (20 °C)
flash point   50 °C
autoignition temp.   450 °C
mp   -15 °C
pH   5 (H₂O, 20 °C) (saturated aqueous solution)
LD 50 oral   LD50 Rat 46.2 mg/kg
LD 50 dermal   LD50 Rabbit 134 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 99.0 % (a/a)
  Density (d 20 °C/ 4 °C): 1.077 - 1.079
  Identity (IR): passes test

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Safety Information

HS Code 
2930 90 98
Hazard Statement(s) 
H226: Flammable liquid and vapour.
H300 + H310 + H330: Fatal if swallowed, in contact with skin or if inhaled
H315: Causes skin irritation.
H319: Causes serious eye irritation.
Precautionary Statement(s) 
P210: Keep away from heat.
P280: Wear protective gloves/ protective clothing.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Storage class 
3 Flammable liquids
WGK 3 highly water endangering
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS06  GHS06
Hazard Symbols 
Very toxic  Very toxic
Declaration (railroad and road) ADR, RID 
UN 2337 , 6.1 (3), I
Declaration (transport by air) IATA-DGR 
UN 2337 , 6.1 (3), I
Declaration (transport by sea) IMDG-Code 
UN 2337 , 6.1 (3), I
Categories of danger 
flammable, very toxic, irritant
R Phrase 
R 10-24/25-26-36/38
Flammable.Toxic in contact with skin and if swallowed.Very toxic by inhalation.Irritating to eyes and skin.
S Phrase 
S 26-28-36/37-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.After contact with skin, wash immediately with plenty of water.Wear suitable protective clothing and gloves.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
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