Zinc carbonate
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ChemSpider |
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ECHA InfoCard | 100.020.435 |
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UNII |
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UN number | 9157 |
CompTox Dashboard (EPA) |
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InChI
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Properties | |
Chemical formula | ZnCO3 |
Molar mass | 125.4 |
Appearance | white solid |
Density | 4.434 g/cm3[1] |
Melting point | 140 °C (284 °F; 413 K)[1] (decomposes) |
Solubility in water | 0.91 mg/L[1] |
Solubility product (Ksp) | 1.46×10−10[2] |
Magnetic susceptibility (χ) | -34×10−6 cm3/mol[3] |
Refractive index (nD) | n1=1.621, n2=1.848[4] |
Structure[5] | |
Crystal structure | Calcite, hR30, No. 167 |
R3c | |
a = 4.6528 Å, c = 15.025 Å | |
Formula units (Z) | 6 |
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GHS labelling: | |
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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 |
Chemical compound
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 (calcite).[7] Zinc is octahedral and each carbonate is bonded to six Zn centers such that oxygen atoms are three-coordinate.
References
- ^ a b c Haynes, p. 4.95
- ^ Haynes, p. 5.178
- ^ Haynes, p. 4.131
- ^ Haynes, p. 4.137
- ^ Haynes, p. 4.144
- ^ Wagenknecht, F.; Juza, R. (1963). "Zinc carbonate". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 1086.
- ^ Effenberger, H.; Mereiter, K.; Zemann, J. (1981). "Crystal structure refinements of magnesite, calcite, rhodochrosite, siderite, smithonite, and dolomite, with discussion of some aspects of the stereochemistry of calcite type carbonates". Zeitschrift für Kristallographie - Crystalline Materials. 156 (3–4): 233–243. Bibcode:1981ZK....156..233E. doi:10.1524/zkri.1981.156.3-4.233.
Cited sources
- Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. ISBN 9781498754293.
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Organozinc(I) compounds |
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Organozinc(II) compounds |
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- C
24H
46ZnO
4