8.01818 EMD Millipore


2-Butanethiol for synthesis. CAS 513-53-1, chemical formula CH₃CH₂CH(SH)CH₃., for synthesis

Synonym: sec-Butyl mercaptan, 1-Methyl-1-propanthiol

  • CAS Number 513-53-1

  • Linear Formula C₄H₁₀S

  • Molecular Weight 90.18 g/mol

  •  EC Number 208-165-2



Related Categories Biochemicals and Reagents More...
bp   82 - 88 °C (1013 hPa)
expl. lim.     1.7 - 9.6 %(V)
vapor pressure   108 hPa (25 °C)
solubility   1.32 g/l
density   0.83 g/cm3 (20 °C)
flash point   -23 °C
mp   -165 °C
LD 50 oral   LD50 Rat 5176 mg/kg
LD 50 dermal   LD50 Rabbit > 2000 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 95.0 % (a/a)
  Density (d 20 °C/ 4 °C): 0.830 - 0.833
  Identity (IR): passes test

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Safety Information

HS Code 
2930 90 98
Hazard Statement(s) 
H225: Highly flammable liquid and vapour.
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.
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 Symbols 
Flammable  Flammable
Declaration (railroad and road) ADR, RID 
UN 2347 , 3, II
Declaration (transport by air) IATA-DGR 
UN 2347 , 3, II
Declaration (transport by sea) IMDG-Code 
UN 2347 , 3, II
Categories of danger 
highly flammable
R Phrase 
R 11
Highly flammable.
S Phrase 
S 16
Keep away from sources of ignition - No smoking.
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