Dichlorine monoxide

Dichlorine monoxide
Names
	Other names Oxygen dichloride; Oxygen chloride; Dichlorine oxide; Chlorine (I) oxide; Hypochlorous oxide; Hypochlorous anhydride
Identifiers
CAS Number	7791-21-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30198 ;
ChemSpider	23048 ;
ECHA InfoCard	100.029.312
PubChem CID	24646;
UNII	0EQ5I4TK19 ;
CompTox Dashboard (EPA)	DTXSID50893909 ;
	InChI InChI=1S/Cl2O/c1-3-2 Key: RCJVRSBWZCNNQT-UHFFFAOYSA-N ; InChI=1/Cl2O/c1-3-2 Key: RCJVRSBWZCNNQT-UHFFFAOYAA;
	SMILES ClOCl;
Properties
Chemical formula	Cl2O
Molar mass	86.9054 g/mol
Appearance	brownish-yellow gas
Melting point	−120.6 °C (−185.1 °F; 152.6 K)
Boiling point	2.0 °C (35.6 °F; 275.1 K)
Solubility in water	very soluble, hydrolyses 143 g Cl2O per 100 g water
Solubility in other solvents	soluble in CCl4
Structure
Dipole moment	0.78 ± 0.08 D
Thermochemistry
Std molar; entropy (S⦵298)	265.9 J K−1 mol−1
Std enthalpy of; formation (ΔfH⦵298)	+80.3 kJ mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H290, H314, H400, H411
Precautionary statements	P234, P260, P264, P273, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P321, P363, P390, P391, P405, P406, P501
NFPA 704 (fire diamond)	3 4 3 OX
Safety data sheet (SDS)
Related compounds
Other cations	Water; Dibromine monoxide; Diiodine monoxide;
Related compounds	Oxygen difluoride, nitrous oxide, chlorine dioxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Dichlorine monoxide is an inorganic compound with the molecular formula Cl₂O. It was first synthesised in 1834 by Antoine Jérôme Balard, who along with Gay-Lussac also determined its composition. In older literature it is often referred to as chlorine monoxide, which can be a source of confusion as that name now refers to the ClO^• radical.

At room temperature it exists as a brownish-yellow gas which is soluble in both water and organic solvents. Chemically, it is a member of the chlorine oxide family of compounds, as well as being the anhydride of hypochlorous acid. It is a strong oxidiser and chlorinating agent.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.