Thiodiglycol

Bis (2- hydroxyethyl ) sulfide

Clear to slightly yellowish liquid

Liquid

1.18 g · cm -3

-16 ° C.

282 ° C

19 hPa ( 168 ° C)

1.5211 (20 ° C)

Attention

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Thiodiglycol or bis (2-hydroxyethyl ) sulphide is a precursor in the production of mustard gas (lost ). By heating with thionyl chloride in benzene solution, the bis (2- hydroxyethyl) sulfide is chlorinated to Lost.

Under the synonymous name 2,2 '- thiodiethanol thiodiglycol is used as an embedding medium in light microscopy. Since it is miscible with water, the refractive index can be adjusted continuously between that of water (1.33 ) and the immersion oil (1.52 ).