Sumporasta kiselina

Sumporasta kiselina
	Sulfurous acid
Identifikacija
CAS registarski broj	7782-99-2
PubChem	1100
ChemSpider	1069
UNII	J1P7893F4J
KEGG	C00094
ChEMBL	CHEMBL1161699
Jmol-3D slike	Slika 1
SMILES
	O=S(O)O
InChI
	InChI=1S/H2O3S/c1-4(2)3/h(H2,1,2,3) ; Kod: LSNNMFCWUKXFEE-UHFFFAOYSA-N InChI=1/H2O3S/c1-4(2)3/h(H2,1,2,3); Kod: LSNNMFCWUKXFEE-UHFFFAOYAJ
Svojstva
Molekulska formula	H2SO3
Molarna masa	82.07 g/mol
Opasnost
Podaci o bezbednosti prilikom rukovanja (MSDS)	ICSC 0074
EU-klasifikacija	Korozivna materija (C)
EU-indeks	016-011-00-9
R-oznake	R20, R34
S-oznake	(S1/2), S9, S26, S36/37/39, S45
Tačka paljenja	nije zapaljiva
Srodna jedinjenja
Srodna jedinjenja	Sumpor dioksid; Sumporna kiselina
	(šta je ovo?) (verifikuj) ; Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje (25 °C, 100 kPa) materijala
	Infobox references

Sumporasta kiselina je hemijsko jedinjenje sa formulom H₂SO₃. Ne postoje dokazi da sumporasta kiselina postoji u rastvorenom obliku, ali je molekul bio detektovan u gasnoj fazi.^[6] Konjugovane baze ove kiseline su međutim široko rasprostanjeni anjoni, bisulfiti (ili hidrogensulfiti) i sulfiti.

Ramanovi spektri rastvora sumpor dioksida u vodi pokazuju samo signale usled SO₂ molekula i bisulfitnog jona, HSO₃⁻.^[7] Intenziteti signala su konzistentni sa sledećim ekvilibrijumom:

SO₂ + H₂O

HSO₃⁻ + H⁺

K_a = 1.54×10⁻²; pK_a = 1.81.

Vodeni rastvori sumpor dioksida, koji se ponekad nazivaju sumporastom kiselinom, se korist kao redukujući agensi i sredstva za dezinfekciju, poput rastvora bisulfita i sulfitnih soli. Oni su takođe blagi izbeljivači, i koriste se za materijale koji se mogu oštetiti izbeljivačima koji sadrže hlor.

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Reference[uredi | uredi kod]

↑ 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
↑ Joanne Wixon, Douglas Kell (2000). „Website Review: The Kyoto Encyclopedia of Genes and Genomes — KEGG”. Yeast 17 (1): 48–55. DOI:10.1002/(SICI)1097-0061(200004)17:1<48::AID-YEA2>3.0.CO;2-H.
↑ Gaulton A, Bellis LJ, Bento AP, Chambers J, Davies M, Hersey A, Light Y, McGlinchey S, Michalovich D, Al-Lazikani B, Overington JP. (2012). „ChEMBL: a large-scale bioactivity database for drug discovery”. Nucleic Acids Res 40 (Database issue): D1100-7. DOI:10.1093/nar/gkr777. PMID 21948594. edit
↑ D. Sülzle, M. Verhoeven, J. K. Terlouw, H. Schwarz (1988). „Generation and Characterization of Sulfurous Acid (H₂SO₃) and of Its Radical Cation as Stable Species in the Gas Phase”. Angew. Chem. Int. Ed. Engl. 27: 1533–4. DOI:10.1002/anie.198815331.
↑ Jolly, William L. (1991). Modern Inorganic Chemistry (2nd izd.). New York: McGraw-Hill. ISBN 0-07-032768-8.

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Portal Hemija

[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

[4] Joanne Wixon, Douglas Kell (2000). „Website Review: The Kyoto Encyclopedia of Genes and Genomes — KEGG”. Yeast 17 (1): 48–55. DOI:10.1002/(SICI)1097-0061(200004)17:1<48::AID-YEA2>3.0.CO;2-H.

[5] Gaulton A, Bellis LJ, Bento AP, Chambers J, Davies M, Hersey A, Light Y, McGlinchey S, Michalovich D, Al-Lazikani B, Overington JP. (2012). „ChEMBL: a large-scale bioactivity database for drug discovery”. Nucleic Acids Res 40 (Database issue): D1100-7. DOI:10.1093/nar/gkr777. PMID 21948594. edit

[6] D. Sülzle, M. Verhoeven, J. K. Terlouw, H. Schwarz (1988). „Generation and Characterization of Sulfurous Acid (H₂SO₃) and of Its Radical Cation as Stable Species in the Gas Phase”. Angew. Chem. Int. Ed. Engl. 27: 1533–4. DOI:10.1002/anie.198815331.

[7] Jolly, William L. (1991). Modern Inorganic Chemistry (2nd izd.). New York: McGraw-Hill. ISBN 0-07-032768-8.

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Sumporasta kiselina

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