2,5-Dimethylthiophene

2,5-Dimethylthiophene is an organosulfur compound with the formula C4H2(CH3)2S. It is one of four isomers of dimethylthiophene. A colorless liquid, it is prepared by sulfurization of hexane-2,5-dione.[1] It is approved as a food flavouring additive in Europe.[2]

2,5-Dimethylthiophene
Names
IUPAC name
2,5-Dimethylthiophene
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.010.286
EC Number
  • 211-313-9
UNII
Properties
C6H8S
Molar mass 112.19 g·mol−1
Appearance Colorless liquid
Density 0.9836 g/cm3
Melting point −62.6 °C (−80.7 °F; 210.6 K)
Boiling point 136.5 °C (277.7 °F; 409.6 K)
Hazards
GHS pictograms
GHS Signal word Warning
GHS hazard statements
H226
P210, P233, P240, P241, P242, P243, P280, P303+361+353, P370+378, P403+235, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References

  1. Shridhar, D. R.; Jogibhukta, M.; Rao, P. Shanthan; Handa, Vijay K. (1982). "An Improved Method for the Preparation of 2,5-Disubstituted Thiophenes". Synthesis. 1982 (12): 1061–1062. doi:10.1055/s-1982-30065.
  2. "Document 32012R0872".
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