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Bis(methylthio)methane

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Bis(methylthio)methane Basic information

Product Name:
Bis(methylthio)methane
Synonyms:
  • FEMA 3878
  • FORMALDEHYDE DIMETHYL MERCAPTAL
  • DIMETHYLTHIOMETHANE
  • BIS(METHYLMERCAPTO)METHANE
  • BIS(METHYLTHIO)METHANE
  • 2,4-DITHIAPENTANE
  • Bis(methyL
  • thio)methane
CAS:
1618-26-4
MF:
C3H8S2
MW:
108.23
EINECS:
216-577-9
Product Categories:
  • Building Blocks
  • Chemical Synthesis
  • sulfide Flavor
  • Organic Building Blocks
  • Sulfides/Disulfides
  • Sulfur Compounds
  • Industrial/Fine Chemicals
Mol File:
1618-26-4.mol
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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℃
FEMA 
3878 | BIS-(METHYLTHIO)METHANE
refractive index 
n20/D 1.53(lit.)
Flash point:
111 °F
storage temp. 
Inert atmosphere,2-8°C
solubility 
IMMISCIBLE
color 
APHA: ≤100
Specific Gravity
1.059
Odor
at 0.10 % in propylene glycol. garlic sulfurous green spicy mushroom
Odor Type
sulfurous
Water Solubility 
IMMISCIBLE
Merck 
14,1256
JECFA Number
533
BRN 
1731143
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)
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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
13
TSCA 
Yes
HazardClass 
3
PackingGroup 
III
HS Code 
29309070

MSDS

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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

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

Preparation Products

Bis(methylthio)methaneSupplier

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