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Alfa Aesar |
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400-6106006 |
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saleschina@alfa-asia.com |
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| | Bis(methylthio)methane Basic information |
| | Bis(methylthio)methane Chemical Properties |
| Melting point | 148 °C | | Boiling point | 147 °C(lit.) | | density | 1.059 g/mL at 25 °C(lit.) | | vapor pressure | 4.679hPa at 20℃ | | refractive index | n20/D 1.53(lit.) | | FEMA | 3878 | BIS-(METHYLTHIO)METHANE | | Fp | 111 °F | | storage temp. | Inert atmosphere,2-8°C | | solubility | IMMISCIBLE | | form | liquid | | color | APHA: ≤100 | | Specific Gravity | 1.059 | | Odor | at 0.10 % in propylene glycol. garlic sulfurous green spicy mushroom | | Odor Type | sulfurous | | biological source | synthetic | | Water Solubility | IMMISCIBLE | | Merck | 14,1256 | | JECFA Number | 533 | | BRN | 1731143 | | Major Application | flavors and fragrances | | InChI | 1S/C3H8S2/c1-4-3-5-2/h3H2,1-2H3 | | InChIKey | LOCDPORVFVOGCR-UHFFFAOYSA-N | | SMILES | CSCSC | | LogP | 2.31 at 20℃ | | CAS DataBase Reference | 1618-26-4(CAS DataBase Reference) | | NIST Chemistry Reference | 2,4-Dithiapentane(1618-26-4) | | EPA Substance Registry System | Methane, bis(methylthio)- (1618-26-4) |
| Hazard Codes | Xi | | Risk Statements | 10-36/37/38 | | Safety Statements | 16-26-36/37/39 | | RIDADR | UN 1993 3/PG 3 | | WGK Germany | 3 | | F | 13 | | TSCA | TSCA listed | | HazardClass | 3 | | PackingGroup | III | | HS Code | 29309070 | | Storage Class | 3 - Flammable liquids | | Hazard Classifications | Aquatic Chronic 3
Eye Irrit. 2
Flam. Liq. 3
Skin Irrit. 2 |
| | Bis(methylthio)methane Usage And Synthesis |
| Chemical Properties | CLEAR COLOURLESS TO PALE YELLOW LIQUID | | Chemical Properties | bis-(Methylthio)methane has a mustard-like odor. | | Occurrence | Reported found in Camembert and Gruyere cheeses, milk, fish oil, cooked and canned beef, shitake mushroom, truffle, prawn and lobster. | | Uses | Bis(methylthio)methane is used in method for reducing odor in room in remodeling work by removing causative substances. | | Definition | ChEBI: Bis(methylthio)methane is a dithioacetal. | | General Description | The liquid structure of bis(methylthio)methane at room temperature was studied by the bonding and non-bonding interatomic potential functions (FMP-RMC) simulation. | | Flammability and Explosibility | Not classified | | Biological Activity | Odor at 0.1% PG', 'Taste at 0.10-0.30 ppm | | Purification Methods | Work in an efficient fume cupboard as the substance may contain traces (or more) of methylmercaptan which has a very bad odour. Dissolve the mercaptal in Et2O, shake it with aqueous alkalis then dry it over anhydrous K2CO3, filter and distil it over K2CO3 under a stream of N2. If the odour is very strong, then allow all gas efluents to bubble through 5% aqueous NaOH solution which is then treated with dilute KMnO4 in order to oxidise MeSH to odourless products. UV: max 238 nm (log 2.73) [Fehnel & Carmack J Am Chem Soc 71 90 1949, Fehér & Vogelbruch Chem Ber 91 996 1958, B.hme & Marz Chem Ber 74 1672 1941]. Oxidation with aqueous KMnO4 yields bis-(methylsulfonyl)methane which has m 142-143o [Fiecchi et al. Tetrahedron Lett 1681 1967]. [Beilstein 1 IV 3088.] |
| | Bis(methylthio)methane Preparation Products And Raw materials |
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