| | Identification | More |  | [Name] 
 2-Butanethiol
 |  | [CAS] 
 513-53-1
 |  | [Synonyms] 
 1-METHYL-1-PROPANETHIOL
 1-METHYL-1-PROPANTHIOL
 2-BUTANETHIOL
 2-Butyl mercaptan
 S-BUTYL MERCAPTAN
 SEC-BUTANETHIOL
 SEC-BUTYL MERCAPTAN
 (±)-butane-2-thiol
 2-Mercaptobutane
 mercaptanbutyliquesecondaire
 Sec-butyl hydrosulfide
 sec-Butyl thioalcohol
 sec-Butyl thiol
 sec-butylthioalcohol
 sec-butylthiol
 sec-C4H9SH
 Secondary butylmercaptan
 secondarybutylmercaptan
 2-BUTANETHIOL  98+%
 SEC-BUTYL MERCAPTAN 93+%
 |  | [EINECS(EC#)] 
 208-165-2
 |  | [Molecular Formula] 
 C4H10S
 |  | [MDL Number] 
 MFCD00004865
 |  | [Molecular Weight] 
 90.19
 |  | [MOL File] 
 513-53-1.mol
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 -165°
 |  | [Boiling point ] 
 84.6-85.2 °C(lit.)
 |  | [density ] 
 0.83 g/mL at 25 °C(lit.)
 
 |  | [vapor pressure ] 
 142 mm Hg ( 37.7 °C)
 
 |  | [refractive index ] 
 n20/D 1.436(lit.)
 
 |  | [Fp ] 
 70 °F
 
 |  | [storage temp. ] 
 Store below +30°C.
 |  | [solubility ] 
 1.32g/l
 |  | [form ] 
 liquid
 |  | [pka] 
 10.92±0.10(Predicted)
 |  | [color ] 
 Colorless to Almost colorless
 |  | [Specific Gravity] 
 0.83
 |  | [Odor] 
 sulfurous
 |  | [explosive limit] 
 1.7-9.6%(V)
 |  | [Odor Threshold] 
 0.00003ppm
 |  | [Merck ] 
 1578
 |  | [LogP] 
 2.180
 |  | [CAS DataBase Reference] 
 513-53-1(CAS DataBase Reference)
 |  | [NIST Chemistry Reference] 
 2-Butanethiol(513-53-1)
 |  | [EPA Substance Registry System] 
 2-Butanethiol (513-53-1)
 | 
 | Safety Data | Back Directory |  | [Hazard Codes ] 
 F,Xi
 |  | [Risk Statements ] 
 R11:Highly Flammable.
 R36/37/38:Irritating to eyes, respiratory system and skin .
 |  | [Safety Statements ] 
 S16:Keep away from sources of ignition-No smoking .
 S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
 S36:Wear suitable protective clothing .
 |  | [RIDADR ] 
 UN 2347 3/PG 2
 
 |  | [WGK Germany ] 
 3
 
 |  | [F ] 
 13
 |  | [HazardClass ] 
 3.1
 |  | [PackingGroup ] 
 II
 |  | [HS Code ] 
 29309070
 |  | [Hazardous Substances Data] 
 513-53-1(Hazardous Substances Data)
 |  | [Toxicity] 
 LD50 orally in Rabbit: 5176 mg/kg   LD50 dermal Rabbit > 2000 mg/kg
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 sec-Butyl Mercaptan is used in the preparation of arylsulfides via palladium catalyzed thioetherification of aryl bromides and iodides.
 |  | [Purification Methods] 
 Purify it as for 1-butanethiol. [Beilstein 1 IV 1584.]
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