Bis(chloroethyl) ether

Bis(chloroethyl) ether
Names
	Preferred IUPAC name 1-Chloro-2-(2-chloroethoxy)ethane
	Other names Oxygen mustard; Bis(2-chloroethyl) ether; 2,2'-Dichlorodiethyl ether; Chlorex; Khloreks; DCEE; 2-Chloroethyl ether; 1,1'-oxybis[2-chloroethane]
Identifiers
CAS Number	111-44-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:34573 ;
ChEMBL	ChEMBL1613350 ;
ChemSpider	21106016 ;
ECHA InfoCard	100.003.519
EC Number	203-870-1;
KEGG	C14688 ;
PubChem CID	8115;
RTECS number	KN0875000;
UNII	6K7D1G5M5N;
UN number	1916
CompTox Dashboard (EPA)	DTXSID9020168 ;
	InChI InChI=1S/C4H8Cl2O/c5-1-3-7-4-2-6/h1-4H2 Key: ZNSMNVMLTJELDZ-UHFFFAOYSA-N ; InChI=1/C4H8Cl2O/c5-1-3-7-4-2-6/h1-4H2 Key: ZNSMNVMLTJELDZ-UHFFFAOYAN;
	SMILES ClCCOCCCl;
Properties
Chemical formula	C4H8Cl2O
Molar mass	143.01 g·mol−1
Appearance	Clear liquid
Odor	Chlorinated solvent-like
Density	1.22 g/mL
Melting point	−50 °C; −58 °F; 223 K
Boiling point	178 °C; 352 °F; 451 K decomposes
Solubility in water	10,200 mg/L
Vapor pressure	0.7 mmHg (20 °C)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Very toxic (T+); Dangerous for the environment (N); Vesicant
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H226, H300, H310, H315, H319, H330, H351
Precautionary statements	P201, P202, P210, P233, P240, P241, P242, P243, P260, P262, P264, P270, P271, P280, P281, P284, P301+P310, P302+P350, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P320, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	4 1 1
Flash point	55 °C; 131 °F; 328 K
Explosive limits	2.7%-?
	Lethal dose or concentration (LD, LC):
LC50 (median concentration)	77 ppm (rat, 4 hr); 152 ppm (mouse, 2 hr); 500 ppm (guinea pig, 1 hr)
LCLo (lowest published)	250 ppm (rat, 4 hr); 500 ppm (guinea pig, 5 hr)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 15 ppm (90 mg/m3) [skin]
REL (Recommended)	Ca TWA 5 ppm (30 mg/m3) ST 10 ppm (60 mg/m3) [skin]
IDLH (Immediate danger)	Ca [100 ppm]
Related compounds
Related compounds	Sulfur mustard; Nitrogen mustard; 2-Bromoethyl ether
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Bis(chloroethyl) ether is an organic compound with the formula O(CH₂CH₂Cl)₂. It is an ether with two 2-chloroethyl substituents. It is a colorless liquid with the odor of a chlorinated solvent.

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