Copper(II) perchlorate is an inorganic compound with the chemical formula Cu(ClO4)2. It is a salt of copper and perchloric acid. It is a hygroscopic crystalline blue solid. It is commonly encountered as copper(II) perchlorate hexahydrate, According to X-ray crystallography, the salt is the aquo complex [Cu(H2O)6]2+ together with the weakly coordinating anion ClO−4.[4]
Copper(II) perchlorate hexahydrate
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Names | |
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IUPAC name
Copper(II) perchlorate
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Other names
Cupric perchlorate
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Identifiers | |
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3D model (JSmol)
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ChemSpider |
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ECHA InfoCard | 100.033.978 |
EC Number |
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PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
Cu(ClO4)2 | |
Molar mass | 262.447 g/mol (anhydrous) 370.539 g/mol (hexahydrate) |
Appearance | Blue crystalline hygroscopic solid (hexahydrate)[1] |
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) |
146 g/(100 ml) (30°C) | |
Refractive index (nD)
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1.505 (hexahydrate)[2] |
Hazards | |
GHS labelling: | |
Warning | |
H272, H315, H319, H335 | |
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)
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TWA 1 mg/m3 (as Cu)[3] |
REL (Recommended)
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TWA 1 mg/m3 (as Cu)[3] |
IDLH (Immediate danger)
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TWA 100 mg/m3 (as Cu)[3] |
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).
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Infobox references
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Like any perchlorate, it is a strong oxidizing agent.