2-Chloroethyl ethyl sulfide

2-Chloroethyl ethyl sulfide is the organosulfur compound with the formula C₂H₅SC₂H₄Cl. It is a colorless liquid. The compound is part of the family of vesicant compounds known as half mustards, has been heavily investigated because of its structural similarity to the sulfur mustard S(C₂H₄Cl)₂. The LD₅₀ of the half mustard is 252 mg/kg (oral, rats) compared to 2.4 mg/kg for the full mustard.^[1]

Quick facts Names, Identifiers ...

2-Chloroethyl ethyl sulfide

Names
Preferred IUPAC name 1-Chloro-2-(ethylsulfanyl)ethane
Other names 1-Chloro-2-(ethylthio)ethane, 2-(Ethylthio)chloroethane 2-Chlorodiethyl sulfide
Identifiers
CAS Number	693-07-2
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL3183525
ChemSpider	12210
ECHA InfoCard	100.010.676
EC Number	211-742-1
PubChem CID	12733
UNII	5MN267Q6RG
CompTox Dashboard (EPA)	DTXSID3027295
InChI InChI=1S/C4H9ClS/c1-2-6-4-3-5/h2-4H2,1H3 Key: GBNVXYXIRHSYEG-UHFFFAOYSA-N
SMILES CCSCCCl
Properties
Chemical formula	C4H9ClS
Molar mass	124.63 g·mol−1
Appearance	Colorless liquid
Density	1.0663 g/cm3
Boiling point	156 °C (313 °F; 429 K)
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H226, H301, H302, H311, H314, H331, H350
Precautionary statements	P201, P202, P210, P233, P240, P241, P242, P243, P260, P264, P270, P271, P280, P281, P301+P310, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P311, P312, P321, P322, P330, P361, P363, P370+P378, P403+P233, P403+P235, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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