Dichloroacetylene

Dichloroacetylene
Names
	IUPAC name Dichloroethyne
	Other names DCA, dichloroethyne
Identifiers
CAS Number	7572-29-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	22649;
ECHA InfoCard	100.149.197
PubChem CID	24227;
RTECS number	AP1080000;
UNII	95I833JV4S ;
CompTox Dashboard (EPA)	DTXSID7020429 ;
	InChI InChI=1S/C2Cl2/c3-1-2-4 Key: ZMJOVJSTYLQINE-UHFFFAOYSA-N; InChI=1/C2Cl2/c3-1-2-4 Key: ZMJOVJSTYLQINE-UHFFFAOYAO;
	SMILES C(#CCl)Cl;
Properties
Chemical formula	C2Cl2
Molar mass	94.92 g·mol−1
Appearance	colorless oily liquid
Odor	disagreeable, sweetish
Density	1.26 g/cm3
Melting point	−66 to −64 °C (−87 to −83 °F; 207 to 209 K)
Boiling point	33 °C (91 °F; 306 K) explodes
Solubility in water	insoluble
Solubility	soluble in acetone, ethanol, ether
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	explosive, potential carcinogen
	GHS labelling:
Pictograms
Hazard statements	H200, H319, H330, H335, H351, H370, H372, H373
Precautionary statements	P260, P261, P264, P270, P271, P280, P284, P304+P340, P310, P312, P320, P321, P337+P313, P403+P233, P405, P501
	NIOSH (US health exposure limits):
PEL (Permissible)	none
REL (Recommended)	Ca C 0.1 ppm (0.4 mg/m3)
IDLH (Immediate danger)	Ca (N.D.)
Related compounds
Other anions	Acetylene; Difluoroacetylene; Dibromoacetylene; Diiodoacetylene; Tetrachloroethylene; Tetrachloromethane; Hexachloroethane;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Dichloroacetylene (DCA) is an organochlorine compound with the formula C₂Cl₂. It is a colorless, explosive liquid that has a sweet and "disagreeable" odor.