Barijum-karbonat

Barijum-karbonat
Drugi nazivi	viterit
Identifikacija
CAS registarski broj	513-77-9
PubChem	10563
ChemSpider	10121
UNII	6P669D8HQ8
MeSH	Barium+carbonate
Jmol-3D slike	Slika 1
SMILES
	[Ba+2].[O-]C(=O)[O-]
InChI
	InChI=1S/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 ; Kod: AYJRCSIUFZENHW-UHFFFAOYSA-L InChI=1/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
Svojstva
Molekulska formula	BaCO3
Molarna masa	197.336 g/mol
Agregatno stanje	beli kristal
Gustina	4.2865 g/cm3, osnovno
Tačka topljenja	811 °C
Tačka ključanja	1555 °C
	; ; Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje (25 °C, 100 kPa) materijala
	Infobox references

Barijum-karbonat je neorgansko hemijsko jedinjenje hemijske formule BaCO₃.

Dobijanje

Javlja se u prirodi u vidu minerala viterita, ali se može dobiti industrijskim putem iz barita.^[4]

Istorijat

Mineral viterit je nazvan prema Viljemu Viteritu koji je 1784. utvrdio da je hemijski različit od barijum-sulfata. Viterit kristališe u ortorombičnom kristalnom sistemu.^[4]

Svojstva

To je beo prah, koji podseća na kredu. Nerastvoran je u vodi, mada se u maloj meri rastvara u prisustvu viška ugljen-dioksida. Reaguje sa kiselinama dajući rastvorljive barijumove soli^[4]:

BaCO₃(s) + 2 HCl(aq) → BaCl₂(aq) + CO₂(g) + H₂O(l)

Sa sumpornom kiselinom slabo reaguje.^[4]

Osobina	Vrednost
Particioni koeficijent^[5] (ALogP)	-2,0
Rastvorljivost^[6] (logS, log(mol/L))	1,3
Polarna površina^[7] (PSA, Å²)	153,4

Značaj

Upotrebljava se za spravljanje otrova za pacove, keramike i cementa.^[4]

Reference

↑ Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today 15 (23-24): 1052-7. DOI:10.1016/j.drudis.2010.10.003. PMID 20970519. edit
↑ Evan E. Bolton, Yanli Wang, Paul A. Thiessen, Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry 4: 217-241. DOI:10.1016/S1574-1400(08)00012-1.
↑ Hettne KM, Williams AJ, van Mulligen EM, Kleinjans J, Tkachenko V, Kors JA. (2010). „Automatic vs. manual curation of a multi-source chemical dictionary: the impact on text mining”. J Cheminform 2 (1): 3. DOI:10.1186/1758-2946-2-3. PMID 20331846. edit
↑ ^4,0 ^4,1 ^4,2 ^4,3 ^4,4 Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.
↑ Ghose, A.K., Viswanadhan V.N., and Wendoloski, J.J. (1998). „Prediction of Hydrophobic (Lipophilic) Properties of Small Organic Molecules Using Fragment Methods: An Analysis of AlogP and CLogP Methods”. J. Phys. Chem. A 102: 3762-3772. DOI:10.1021/jp980230o.
↑ Tetko IV, Tanchuk VY, Kasheva TN, Villa AE. (2001). „Estimation of Aqueous Solubility of Chemical Compounds Using E-State Indices”. Chem Inf. Comput. Sci. 41: 1488-1493. DOI:10.1021/ci000392t. PMID 11749573.
↑ Ertl P., Rohde B., Selzer P. (2000). „Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties”. J. Med. Chem. 43: 3714-3717. DOI:10.1021/jm000942e. PMID 11020286.

Literatura

Clayden Jonathan, Nick Greeves, Stuart Warren, Peter Wothers (2001). Organic chemistry. Oxford, Oxfordshire: Oxford University Press. ISBN 0-19-850346-6.
Smith, Michael B.; March, Jerry (2007). Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th izd.). New York: Wiley-Interscience. ISBN 0-471-72091-7.
Katritzky A.R., Pozharskii A.F. (2000). Handbook of Heterocyclic Chemistry. Academic Press. ISBN 0080429882.

Spoljašnje veze

Portal Hemija

Barium carbonate

[1] Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today 15 (23-24): 1052-7. DOI:10.1016/j.drudis.2010.10.003. PMID 20970519. edit

[2] Evan E. Bolton, Yanli Wang, Paul A. Thiessen, Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry 4: 217-241. DOI:10.1016/S1574-1400(08)00012-1.

[3] Hettne KM, Williams AJ, van Mulligen EM, Kleinjans J, Tkachenko V, Kors JA. (2010). „Automatic vs. manual curation of a multi-source chemical dictionary: the impact on text mining”. J Cheminform 2 (1): 3. DOI:10.1186/1758-2946-2-3. PMID 20331846. edit

[мел-4] 4,0 ^4,1 ^4,2 ^4,3 ^4,4 Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.

[5] Ghose, A.K., Viswanadhan V.N., and Wendoloski, J.J. (1998). „Prediction of Hydrophobic (Lipophilic) Properties of Small Organic Molecules Using Fragment Methods: An Analysis of AlogP and CLogP Methods”. J. Phys. Chem. A 102: 3762-3772. DOI:10.1021/jp980230o.

[6] Tetko IV, Tanchuk VY, Kasheva TN, Villa AE. (2001). „Estimation of Aqueous Solubility of Chemical Compounds Using E-State Indices”. Chem Inf. Comput. Sci. 41: 1488-1493. DOI:10.1021/ci000392t. PMID 11749573.

[7] Ertl P., Rohde B., Selzer P. (2000). „Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties”. J. Med. Chem. 43: 3714-3717. DOI:10.1021/jm000942e. PMID 11020286.

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