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Bis(methylthio)methane

Product NameBis(methylthio)methane
CAS1618-26-4
MFC3H8S2
MW108.23
EINECS216-577-9
MOL File1618-26-4.mol

Chemical Properties

Melting point	−20.5 °C (−4.9 °F; 252.7 K)
Boiling point	147 °C (297 °F; 420 K)
Density	1.059 g/cm3, liquid
vapor pressure	4.679hPa at 20℃
FEMA	3878 \| BIS-(METHYLTHIO)METHANE
refractive index	1.53
Flash point	43.89 °C (111.00 °F; 317.04 K)
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)

Safety Information

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

MSDS

Provider	Language
2,4-Dithiapentane	English
SigmaAldrich	English
ACROS	English
ALFA	English

Usage And Synthesis

Chemical Properties

bis-(Methylthio)methane has a mustard-like odor.

Chemical Properties

CLEAR COLOURLESS TO PALE YELLOW LIQUID

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

Chemical Properties

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MSDS

Usage And Synthesis

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