Talk:Sodium metabisulfite

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sodium metabisulfite (metabisulphite)[edit]

Is it really true that it can be thermally decomposed all the way to sodium oxide? Information on preparation/production methods for metabisulphite would be interesting. — Preceding unsigned comment added by 150.227.15.253 (talk) 13:20, 2 January 2012 (UTC)[reply]

Will be useful to direct readers to means to neutralise sulphur dioxide in foods, and especially fruit juices treated with sodium metabisulphite. I find the stuff totally objectionable, a sharp hit up the back of the nose, a good way to destroy an enjoyable food experience.

I think oxidation is the trick, either aeration or use of hydrogen peroxide. Are we looking for oxidising agents, and if so what other oxidising agents are likely to do the job . . . vitamin C?

My understanding is that dimethyl dicarbonate is a very effective alternative, a sterilant for juices which breaks down to innocuous compounds before consumption.

Some things I would like to point out: oxidants that are strong enough to affect SO₂ are strong enough to seriously destroy food value of anything that contain them. Vitamin C is an anti-oxidant (reductant) and would be the opposite of what is needed. The best way to remove the sulfite's effect is heating the food, though this wouldn't be productive with wine. Furthermore, diethylbicarbonate would be a small amount safer, not releasing a small amount of methyl alcohol. Hope this helps. 208.189.34.177 (talk) 05:35, 5 June 2008 (UTC)[reply]

Structural formula[edit]

The structural formula shown here is incorrect.The two Sulphurs should be bridged by one of the oxygens.

—The preceding unsigned comment was added by Garrison Roo (talk • contribs) 07:05, 11 March 2007 (UTC).[reply]

Wrong. The two sulfurs are not bridged by an oxygen. See, for example, http://scripts.iucr.org/cgi-bin/paper?bk0141&buy=1.

Ben (talk) 02:01, 8 December 2007 (UTC)[reply]

sodium pyrosulfite[edit]

sodium pyrosulfite should redirect to this!

Sainsburys own Paracetamol caplets 500mg use E223 too, I have taken these pills and then got ichy! due to the E223.

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Broken reference[edit]

Reference 1 to http://www.ific.org/publications/brochures/asthmabroch.cfm is broken. (I suffer from an allergic reaction to sodium metabisulphite so I was looking for a reference.) I searched the site this now goes to but was unable to find a relevant paper. RPTB1 (talk) 14:49, 8 December 2009 (UTC)[reply]

Broken link[edit]

The link to the MSDS goes to a non-existent page. — Preceding unsigned comment added by 158.51.81.36 (talk) 00:19, 28 February 2021 (UTC)[reply]

Terrible one for a food additive[edit]

http://www.google.com.au/search?hl=en&source=hp&q=Sodium+metabisulfite+E223+gov&btnG=Google+Search&meta=cr%3DcountryAU&aq=f&aqi=&aql=&oq=&gs_rfai=

--222.67.205.141 (talk) 04:16, 19 March 2010 (UTC)[reply]

http://www.google.co.uk/search?hl=en&source=hp&q=Sodium+metabisulfite+E223+gov&btnG=Google+Search&meta=cr%3DcountryUK%7CcountryGB&aq=f&aqi=&aql=&oq=&gs_rfai=

--222.67.205.141 (talk) 04:18, 19 March 2010 (UTC)[reply]

http://www.google.co.uk/search?hl=en&newwindow=1&q=Sodium+pyrosulfite+E223+gov.uk&btnG=Search&meta=cr%3DcountryUK%7CcountryGB&aq=f&aqi=&aql=&oq=&gs_rfai=

--222.67.205.141 (talk) 04:26, 19 March 2010 (UTC)[reply]

http://www.google.ca/search?um=1&hl=en&cr=countryCA&q=Sodium%20metabisulfite%20E223%20gc.ca&aql=&oq=&gs_rfai=&ie=UTF-8&sa=N&tab=iw

--222.67.205.141 (talk) 04:21, 19 March 2010 (UTC)[reply]

http://www.google.co.nz/search?hl=en&source=hp&q=Sodium+metabisulfite+E223+gov&btnG=Google+Search&meta=cr%3DcountryNZ&aq=f&aqi=&aql=&oq=&gs_rfai=

--222.67.205.141 (talk) 04:23, 19 March 2010 (UTC)[reply]

Info about sulfa (sulfite/sulfate) allergy....[edit]

and sulfa intolerance

http://scholar.google.co.nz/scholar?as_q=sulfite+allergy&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdts=5&hl=en

--222.67.205.141 (talk) 04:32, 19 March 2010 (UTC)[reply]

http://scholar.google.co.nz/scholar?hl=en&q=allintitle%3A+sulfate+allergy&btnG=Search&as_sdt=2000&as_ylo=&as_vis=0

--222.67.205.141 (talk) 04:35, 19 March 2010 (UTC)[reply]

http://scholar.google.co.nz/scholar?as_q=sulfa+allergy&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdts=5&hl=en

--222.67.205.141 (talk) 04:39, 19 March 2010 (UTC)[reply]

http://scholar.google.co.nz/scholar?hl=en&q=allintitle%3A+sulfite+intolerance&btnG=Search&as_sdt=2000&as_ylo=&as_vis=0

http://scholar.google.co.nz/scholar?hl=en&q=allintitle%3A+sulfate+intolerance&btnG=Search&as_sdt=2000&as_ylo=&as_vis=0

--222.67.205.141 (talk) 04:51, 19 March 2010 (UTC)[reply]

Allergies to Sulfa can be unrelated to allergies to sulfites; despite both containing sulfur, the molecules are different and have different binding properties. Sensitivity to sulfites can also occur without an actual sulfite allergy, the latter having more serious consequences. 76.10.128.192 (talk) 20:04, 11 February 2015 (UTC)[reply]