Barijum-karbonat

Barijum-karbonat
Nazivi
	Drugi nazivi viterit
Identifikacija
CAS broj	513-77-9 ;
3D model (Jmol)	interaktivna slika;
ChemSpider	10121 ;
ECHA InfoCard	100.007.426
MeSH	Barium+carbonate
PubChem C ID	10563;
UNII	6P669D8HQ8 ;
	InChI InChI=1S/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 Ključ: AYJRCSIUFZENHW-UHFFFAOYSA-L ; InChI=1/CH2O3.Ba/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2;
	SMILES [Ba+2].[O-]C(=O)[O-]; ; ; ; ; ;
Svojstva
Hemijska formula	BaCO3
Molarna masa	197,336 g/mol
Agregatno stanje	beli kristal
Gustina	4,2865 g/cm3, основно
Tačka topljenja	811 °C
Tačka ključanja	1555 °C
	Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje materijala (na 25°C [77°F], 100 kPa).
	Reference infokutije

Barijum-karbonat je neorgansko hemijsko jedinjenje hemijske formule BaCO₃.

Dobijanje uredi

Javlja se u prirodi u vidu minerala viterita, ali se može dobiti industrijskim putem iz barita.^[3]

Istorijat uredi

Mineral viterit je nazvan prema Viljemu Viteritu koji je 1784. utvrdio da je hemijski različit od barijum-sulfata. Viterit kristališe u ortorombičnom kristalnom sistemu.^[3]

Svojstva uredi

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^[3]:

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

Sa sumpornom kiselinom slabo reaguje.^[3]

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

Značaj uredi

Upotrebljava se za spravljanje otrova za pacove, keramike i cementa.^[3]

Reference uredi

^ 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. PMID 20970519. doi:10.1016/j.drudis.2010.10.003. uredi
^ 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.
^ ^a ^b ^v ^g ^d Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.
^ Ghose, A.K.; Viswanadhan V.N. & 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. PMID 11749573. doi:10.1021/ci000392t.
^ 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. PMID 11020286. doi:10.1021/jm000942e.

Literatura uredi

Clayden, Jonathan; Greeves, Nick; Warren, Stuart; Wothers, Peter (2001). Organic Chemistry (I izd.). Oxford University Press. ISBN 978-0-19-850346-0.
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 (Second izd.). Academic Press. ISBN 0080429882.

Spoljašnje veze uredi

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. PMID 20970519. doi:10.1016/j.drudis.2010.10.003. uredi

[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.

[мел-3] v ^g ^d Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.

[4] Ghose, A.K.; Viswanadhan V.N. & 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.

[5] 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. PMID 11749573. doi:10.1021/ci000392t.

[6] 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. PMID 11020286. doi:10.1021/jm000942e.

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