Copper(II) perchlorate

Copper(II) perchlorate is an inorganic compound with the chemical formula Cu(ClO₄)₂. It forms hydrates with the formula Cu(ClO₄)₂(H₂O)_x. The anhydrous solid is rarely encountered but several hydrates are known. Most important is the perchlorate salt of the copper aquo complex copper(II) perchlorate hexahydrate, [Cu(H₂O)₆]²⁺(ClO−4)₂.^[3]

Copper(II) perchlorate

Copper(II) perchlorate hexahydrate
Copper(II) perchlorate hexahydrate
Copper(II) perchlorate hexahydrate
Names
IUPAC name Copper(II) perchlorate
Other names Cupric perchlorate
Identifiers
CAS Number	10294-46-9 (hexahydrate) Y
3D model (JSmol)	Interactive image
ChemSpider	26246
ECHA InfoCard	100.033.978
EC Number	237-391-4
PubChem CID	28211 (hexahydrate)
UNII	57JSH2LO1G Y
CompTox Dashboard (EPA)	DTXSID40890720
InChI InChI=1S/2ClHO4.Cu/c2*2-1(3,4)5;/h2*(H,2,3,4,5);/q;;+2/p-2 Key: YRNNKGFMTBWUGL-UHFFFAOYSA-L
SMILES [O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[Cu+2]
Properties
Chemical formula	Cu(ClO4)2 (anhydrous)
Molar mass	262.447 g/mol (anhydrous) 370.539 g/mol (hexahydrate)
Appearance	Blue crystalline hygroscopic solid (hexahydrate)
Odor	odorless
Density	2.225 g/cm3 (hexahydrate)
Melting point	82 °C (180 °F; 355 K) (hexahydrate)
Boiling point	120 °C (248 °F; 393 K) (hexahydrate)
Solubility in water	146 g/(100 ml) (30°C)
Refractive index (nD)	1.505 (hexahydrate)[1]
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H315, H319, H335
Precautionary statements	P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m3 (as Cu)[2]
REL (Recommended)	TWA 1 mg/m3 (as Cu)[2]
IDLH (Immediate danger)	TWA 100 mg/m3 (as Cu)[2]
Safety data sheet (SDS)	External MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Infrared spectroscopic studies of anhydrous copper(II) perchlorate provided some of the first evidence for the binding of perchlorate anion to a metal ion.^[4] The structure of this compound was eventually deduced by X-ray crystallography. Copper resides in a distorted octahedral environment and the perchlorate ligands bridge between the Cu(II) centers.^[5]

Safety

Like other perchlorates, copper(II) perchlorate is a strong oxidant.