8.41749 EMD Millipore


1-Pentanethiol for synthesis. CAS 110-66-7, molar mass 104.2 g/mol., for synthesis

Synonym: Amyl mercaptan, Pentyl mercaptan

  • CAS Number 110-66-7

  • Linear Formula C₅H₁₂S

  • Molecular Weight 104.2 g/mol

  •  EC Number 203-789-1



Related Categories Biochemicals and Reagents More...
packaging   50 ml in Glass bottle (8417490050)
bp   125 - 126 °C (1013 hPa)
vapor pressure   18.5 hPa (25 °C)
solubility   0.16 g/l
density   0.841 g/cm3 (20 °C)
flash point   18 °C
mp   -76 °C
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 98.0 % (a/a)
  Density (d 20 °C/ 4 °C): 0.840 - 0.844
  Identity (IR): passes test

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Safety Information

HS Code 
2930 90 98
Hazard Statement(s) 
H225: Highly flammable liquid and vapour.
H302 + H332: Harmful if swallowed or if inhaled
Precautionary Statement(s) 
P210: Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P223: Keep away from any possible contact with water, because of violent reaction and possible flash fire.
P403 + P235: Store in a well-ventilated place. Keep cool.
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) 
GHS07  GHS07
Hazard Symbols 
Flammable  Flammable
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 1111 , 3, II
Declaration (transport by air) IATA-DGR 
UN 1111 , 3, II
Declaration (transport by sea) IMDG-Code 
UN 1111 , 3, II, Marine Pollutant: P
Categories of danger 
highly flammable, harmful
R Phrase 
R 11-20/22
Highly flammable.Harmful by inhalation and if swallowed.
S Phrase 
S 16
Keep away from sources of ignition - No smoking.
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