2-Chloroethyl ethyl sulfide

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, P261, 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

Last updated June 01, 2025

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 LD50s of the half and full mustard are 252 and 2.4 mg/kg (oral, rats).^[1]

References

↑ Wang, Qi-Qiang; Begum, Rowshan Ara; Day, Victor W.; Bowman-James, Kristin (2012). "Sulfur, Oxygen, and Nitrogen Mustards: Stability and Reactivity". Organic & Biomolecular Chemistry. 10 (44): 8786–8793. doi:10.1039/c2ob26482j. PMID 23070251.

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[KBJ-1] Wang, Qi-Qiang; Begum, Rowshan Ara; Day, Victor W.; Bowman-James, Kristin (2012). "Sulfur, Oxygen, and Nitrogen Mustards: Stability and Reactivity". Organic & Biomolecular Chemistry. 10 (44): 8786–8793. doi:10.1039/c2ob26482j. PMID 23070251.

[1]

v t e Sulfur mustards
Vesicants	Bromlost EA-5983 Mustard gas (bis(2-chloroethyl)sulfide) O-Mustard p-(2-Chloroethylthio)phenyldichloroarsine Sesquimustard TL-258 TL-293 TL-767
Antineoplastic agents	S-46 S-112 S-150 S-163 S-169 S-170 S-172 S-173 S-179 S-180 S-182 TL-1002
Other	2-Chloroethyl ethyl sulfide Mustard chlorohydrin

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, P261, 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