Title:  sec-Butyl Mercaptan 
CAS Registry Number:  513-53-1 
CAS Name:  2-Butanethiol 
Additional Names:  sec-butyl thioalcohol 
Molecular Formula:  C4H10S 
Molecular Weight:  90.19 
Percent Composition:  C 53.27%, H 11.18%, S 35.55% 
Line Formula:  CH3CH2CH(SH)CH3 
Literature References:  Prepd from 2-iodobutane by means of alcoholic KSH soln:  Reymann, Ber. 7, 1287 (1874); from 2-bromobutane in the same manner:  Ellis, Reid, J. Am. Chem. Soc. 54, 1674 (1932). 
Properties:  Mobile liq.  Heavy skunk odor.  mp -165°.  bp 84-85°.  Flammable.  d17 0.8299; d425 0.8246.  nD25 1.4338.  Slightly sol in water.  Very sol in alc, ether, liquid H2S. 
Melting point:  mp -165° 
Boiling point:  bp 84-85° 
Index of refraction:  nD25 1.4338 
Density:  d17 0.8299; d425 0.8246   |