| Identification | More | [Name]
Isobutylmercaptan | [CAS]
513-44-0 | [Synonyms]
2-METHYL-1-PROPANETHIOL
FEMA 3874
ISOBUTYL MERCAPTAN
1-Isobutanethiol
1-Mercaptoisobutane
1-Propanethiol,2-methyl-
2-methyl-1-propanethio
2-methyl-1-propylmercaptan
2-methylpropane-1-thiol
Isobutanethiol
iso-Butanethiol
iso-Butylmerecaptan
isobutylthioalcohol
isobutylthiol
iso-C4H9SH
mercaptanisobutylique
Thioisobutylclcohol
Isobutyl mecaptan
2-METHYL-1-PROPANETHIOL 92+%
2-METHYL-1-PROPANETHIOL, TECH., 92% | [EINECS(EC#)]
208-162-6 | [Molecular Formula]
C4H10S | [MDL Number]
MFCD00004882 | [Molecular Weight]
90.19 | [MOL File]
513-44-0.mol |
| Chemical Properties | Back Directory | [Appearance]
Liquid; unpleasant odor. | [Melting point ]
-145°C | [Boiling point ]
87-89 °C(lit.) | [density ]
0.831 g/mL at 25 °C(lit.)
| [vapor density ]
3.1 (vs air)
| [vapor pressure ]
124 mm Hg ( 37.8 °C)
| [FEMA ]
3874 | [refractive index ]
n20/D 1.4385(lit.)
| [Fp ]
15 °F
| [solubility ]
H2O: slightly soluble | [form ]
liquid | [pka]
10.41±0.10(Predicted) | [color ]
Colorless to Light yellow | [Odor]
at 0.10 % in propylene glycol. cooked vegetable mustard | [Odor Threshold]
0.0000068ppm | [Odor Type]
sulfurous | [JECFA Number]
512 | [Merck ]
5147 | [BRN ]
1730890 | [LogP]
2.18 | [Uses]
Flammable, dangerous fire risk. | [CAS DataBase Reference]
513-44-0(CAS DataBase Reference) | [NIST Chemistry Reference]
1-Propanethiol, 2-methyl-(513-44-0) | [EPA Substance Registry System]
513-44-0(EPA Substance) |
| 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
| [RTECS ]
TZ7630000
| [F ]
13 | [HazardClass ]
3.1 | [PackingGroup ]
II | [HS Code ]
29309090 |
| Hazard Information | Back Directory | [Chemical Properties]
2-Methyl-1-propanethiol has a cooked vegetable, almost mustard-like, odor | [Chemical Properties]
Liquid; unpleasant odor. | [Occurrence]
Reported found in guava, milk, cooked beef, cooked pork and beer. | [General Description]
2-methyl-1-propanethiol attaches with L-Cys (the carrier) via a disulfide bond to form the brain-targeted drug delivery systems (BTDS). | [Purification Methods]
Dissolve the thiol in EtOH, and add to 0.25M Pb(OAc)2 in 50% aqueous EtOH. The precipitated lead mercaptide is filtered off, washed with a little EtOH, and impurities are removed from the molten salt by steam distillation. After cooling, dilute HCl is added dropwise to the residue, and the mercaptan is distilled directly from the flask. Water is separated from the distillate, and the mercaptan is dried (Na2CO3) and distilled under nitrogen. [Mathias J Am Chem Soc 72 1897 1950, Beilstein 1 H 378, 1 I 191, 1 II 412, 1 III 1565, 1 IV 1605.] |
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