Zinc carbonate
Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.020.435 |
EC Number |
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PubChem CID
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UNII | |
UN number | 9157 |
CompTox Dashboard (EPA)
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Properties | |
ZnCO3 | |
Molar mass | 125.4 |
Appearance | white solid |
Density | 4.434 g/cm3[1] |
Melting point | 140 °C (284 °F; 413 K)[1] (decomposes) |
0.91 mg/L[1] | |
Solubility product (Ksp)
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1.46×10−10[2] |
-34×10−6 cm3/mol[3] | |
Refractive index (nD)
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n1=1.621, n2=1.848[4] |
Structure[5] | |
Calcite, hR30, No. 167 | |
R3c | |
a = 4.6528 Å, c = 15.025 Å
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Formula units (Z)
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6 |
Hazards | |
GHS labelling: | |
Signal word
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Warning |
H319, H410, H411 | |
P264, P273, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, P362, P391, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Zinc carbonate is the inorganic compound with the formula ZnCO3. It is a white solid that is insoluble in water. It exists in nature as the mineral smithsonite. It is prepared by treating cold solutions of zinc sulfate with potassium bicarbonate. Upon warming, it converts to basic zinc carbonate (Zn5(CO3)2(OH)6).[6]
Zinc carbonate adopts the same structure as calcium carbonate. Zinc is octahedral and each carbonate is bonded to six Zn centers such that oxygen atoms are three-coordinate.
References[]
Cited sources[]
- Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. ISBN 9781498754293.
Categories:
- Carbonates
- Zinc compounds
- Inorganic compound stubs