Names | |
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IUPAC name
Dicopper carbonate dihydroxide
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Other names
copper carbonate hydroxide, cupric carbonate, copper carbonate
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.031.909 |
PubChem CID
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Properties | |
Cu2(OH)2CO3 | |
Molar mass | 221.114 g/mol |
Appearance | green powder |
Density | 4 g/cm3 |
Melting point | 200 °C (392 °F; 473 K) |
Boiling point | 290 °C (554 °F; 563 K) decomposes |
insoluble | |
Solubility product (Ksp)
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7.08·10−9 |
Thermochemistry | |
Std molar
entropy (S |
88 J/mol·K |
Std enthalpy of
formation (ΔfH |
−595 kJ/mol |
Hazards | |
Safety data sheet | Oxford MSDS |
GHS pictograms | |
GHS signal word | Warning |
H302, H315, H319, H335 | |
P261, P305+351+338 | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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159 mg/kg (rat, oral) |
US health exposure limits (NIOSH): | |
PEL (Permissible)
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TWA 1 mg/m3 (as Cu) |
REL (Recommended)
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TWA 1 mg/m3 (as Cu) |
IDLH (Immediate danger)
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TWA 100 mg/m3 (as Cu) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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(what is ?) | |
Infobox references | |
Basic copper carbonate is a chemical compound, more properly called copper(II) carbonate hydroxide. It is an ionic compound (a salt) consisting of the ions copper(II) Cu2+
, carbonate CO2−
3, and hydroxide HO−
.
The name most commonly refers to the compound with formula Cu
2CO
3(OH)2. It is a green crystalline solid that occurs in nature as the mineral malachite. It has been used since antiquity as a pigment, and it is still used as such in artist paints, sometimes called verditer, green bice, or mountain green.
Sometimes the name is used for Cu
3(CO
3)2(OH)2, a blue crystalline solid also known as the mineral azurite. It too has been used as pigment, sometimes under the name mountain blue or blue verditer.