| Isobutylmercaptan Basic information |
| Product Name: | Isobutylmercaptan |
| Synonyms: | 1-Isobutanethiol;1-Mercaptoisobutane;1-Propanethiol,2-methyl-;2-methyl-1-propanethio;2-methyl-1-propylmercaptan;2-methylpropane-1-thiol;Isobutanethiol;iso-Butanethiol |
| CAS: | 513-44-0 |
| MF: | C4H10S |
| MW: | 90.19 |
| EINECS: | 208-162-6 |
| Product Categories: | Alkyl Thiols;Building Blocks;Chemical Synthesis;Contact Printing;Materials Science;Micro/NanoElectronics;thiol Flavor;Organic Building Blocks;Self Assembly &Self-Assembly Materials;Sulfur Compounds;Thiols;Thiols/Mercaptans |
| Mol File: | 513-44-0.mol |
| Isobutylmercaptan Chemical Properties |
| 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) |
| refractive index | n |
| FEMA | 3874 | 2-METHYL-1-PROPANETHIOL |
| Fp | 15 °F |
| solubility | H2O: slightly soluble |
| form | liquid |
| pka | 10.41±0.10(Predicted) |
| color | Colorless to Light yellow |
| Odor Threshold | 0.0000068ppm |
| JECFA Number | 512 |
| Merck | 14,5147 |
| BRN | 1730890 |
| CAS DataBase Reference | 513-44-0(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Propanethiol, 2-methyl-(513-44-0) |
| EPA Substance Registry System | 1-Propanethiol, 2-methyl- (513-44-0) |
| Safety Information |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36/37/38 |
| Safety Statements | 16-26-36 |
| RIDADR | UN 2347 3/PG 2 |
| WGK Germany | 3 |
| RTECS | TZ7630000 |
| F | 13 |
| HazardClass | 3.1 |
| PackingGroup | II |
| HS Code | 29309090 |
| MSDS Information |
| Provider | Language |
|---|---|
| SigmaAldrich | English |
| Isobutylmercaptan Usage And Synthesis |
| Chemical Properties | Liquid; unpleasant odor. |
| Chemical Properties | 2-Methyl-1-propanethiol has a cooked vegetable, almost mustard-like, odor |
| Occurrence | Reported found in guava, milk, cooked beef, cooked pork and beer. |
| Uses | Flammable, dangerous fire risk. |
| 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.] |
| Isobutylmercaptan Preparation Products And Raw materials |
| Raw materials | Thiourea-->1-Bromo-2-methylpropane |
| Preparation Products | 2-Propanesulfinic acid,2-methyl--->Isobutanesulfonyl chloride |
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