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Author: Subject: Interest Check: Sodium Dithionite, Na2S2O4 (Sodium Hydrosulfite)
Loptr
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Interest Check: Sodium Dithionite, Na2S2O4 (Sodium Hydrosulfite)

Hello everyone,

I have come across a source of Sodium Dithionite and wanted to gauge the amount of interest that would be found if it were to be offered up for sale here on SM.

I can't figure out how to post this as a poll, so just reply in this thread with a statement towards your interests in this compound. I know this compound is pretty easily prepared by the amateur, so I just need to figure out if purchasing it would be worth our while.

I look forward to your feedback!

Quoted from: http://reag.paperplane.io/00002516.htm

[Edited on 21-7-2016 by Loptr]
Praxichys
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I love buying things just to have them in stock. I'm assuming this is the dihydrate? I'd be interested in half a kilo if the price is right.

Loptr
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 Quote: Originally posted by Praxichys I love buying things just to have them in stock. I'm assuming this is the dihydrate? I'd be interested in half a kilo if the price is right.

You and I seem to be very similar in that regard. I was planning to go ahead and buy some to have on hand, but wanted to see if others were interested first.

I have also enrolled in a couple of chemistry courses at a local college for this fall, which is exciting because all of my chemistry work was a good ~10 years ago in college. It will be nice to have a more immediate understanding and intuition of what can be used for something, and how so.

Cheers!
Melgar
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My guess would be no. It's not super useful, and its main attraction is how cheaply it can be manufactured on an industrial scale. I can't really think of any amateur syntheses where sodium dithionite would be the reagent of choice, as opposed to another partially oxidized sulfur salt of sodium, like sodium metabisulfite or sodium thiosulfate.
carrant
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I would be interested in at least 500g (or more depending on pricing).
careysub
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 Quote: Originally posted by Melgar My guess would be no. It's not super useful, and its main attraction is how cheaply it can be manufactured on an industrial scale. I can't really think of any amateur syntheses where sodium dithionite would be the reagent of choice, as opposed to another partially oxidized sulfur salt of sodium, like sodium metabisulfite or sodium thiosulfate.

Here is a document that recounts a range of chemical applications:

It is used for example in a high yield hydrolysis of melatonin to 5-Methoxytryptamine:
Neurochemical Research, 26 (2001) 1171-1176
US Pat 4,772,726

Presumably this would work equally well for tryptophan.

Also:

Attachment: 10.1021@jo01309a011.pdf (560kB)

Texium

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It can also be used in place of aluminum in the luminol synthesis for a much cleaner and easier to work up product. I already have some though, thanks to careysub.

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Cryolite.
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The issue is of course price. Super iron out provides a reasonable source of sodium dithionite (~35% pure, with the contaminants all being various soluble sodium salts which should not interact), and for very cheap (amazon lists it at 10.99 for 28 ounces).
If you are after purity, there is a seller on ebay selling 100g of dithionite for 13.80. And finally, it can be made easily at home by the reaction of zinc powder and sodium bisulfite, followed by crashing out of the product with ethanol.

I might be interested in purchasing some (mostly to just have some around), but what price will you be selling at?
Loptr
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That's the purpose of this interest check, which is to gauge interest to determine an amount for purchase. I have not worked the numbers yet, but I could probably sell it for $35-45/kg. Again, that depends on interest. This is from an actual chemical supply company. Fleaker International Hazard Posts: 1244 Registered: 19-6-2005 Member Is Offline Mood: nucleophilic Just be wary of DOT rules on shipping and consult the HMT. Neither flask nor beaker. "Kid, you don't even know just what you don't know. " --The Dark Lord Sauron Loptr International Hazard Posts: 1316 Registered: 20-5-2014 Location: USA Member Is Offline Mood: Grateful  Quote: Originally posted by Fleaker Just be wary of DOT rules on shipping and consult the HMT. Thank you for the advice. It is appreciated. careysub International Hazard Posts: 1339 Registered: 4-8-2014 Location: Coastal Sage Scrub Biome Member Is Offline Mood: Lowest quantum state Shannon & Sons Minerals has sodium dithionite (from Germany) at$9 for one kilogram. 10 kg for \$67.

https://www.shannonsminerals.com/shop/index.php/shannonsmine...
Loptr
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*** EDITED ***

It seems they are in the USA. It looks like that if you want Sodium Dithionite, then go to Shannon & Sons.

[Edited on 21-7-2016 by Loptr]
careysub
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 Quote: Originally posted by Loptr *** EDITED *** It seems they are in the USA. It looks like that if you want Sodium Dithionite, then go to Shannon & Sons. [Edited on 21-7-2016 by Loptr]

If you are in Europe, try contacting them anyway.

They have a German connection I do not quite understand. Their chemicals are all of German origin, with German labelling. Much of their inventory is in Germany and ships from there.

This has created a problem trying to buy some of the things the site advertises (fossils, and pitchblende from the Hartz Mountains) - I could not get those things since they either could not ship (pitchblende) or was damaged in customs (!).

[Edited on 21-7-2016 by careysub]
Loptr
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They also have cheap calcium carbide. The cheapest I had found it was some site called Cheap Carbide, and I do believe these guys are cheaper.
careysub
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 Quote: Originally posted by Loptr They also have cheap calcium carbide. The cheapest I had found it was some site called Cheap Carbide, and I do believe these guys are cheaper.

One of the things I found I could not actually buy since it is in Germany, and shipping issues were a problem.

They do distribute from Gilbert, Arizona where Michael Shannon lives. But for some things I had to wait for a mineral shipment from Germany for a major Arizona mineral show. I didn't mind waiting.

But yes, there prices are good. I suggest contacting them and seeing what you work out whereever you are, Europe or U.S.

I got U.S. pitchblende from them, which is otherwise extremely hard to source.

[Edited on 22-7-2016 by careysub]
UC235
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 Quote: Originally posted by zts16 It can also be used in place of aluminum in the luminol synthesis for a much cleaner and easier to work up product. I already have some though, thanks to careysub.

I'm pretty sure Nurdrage was just making shit up when he chose to reduce luminol using aluminum. Sodium Dithionite is the literature reagent of choice. See: http://www.orgsyn.org/Content/pdfs/procedures/CV3P0069.pdf

I've found that Thiourea dioxide (Thiox/Spectralite) is a quick, efficient, and reliable reducing agent for this transformation as well. Thiox is DOT packing group III while dithionite is considered group II.

[Edited on 22-7-2016 by UC235]

 Sciencemadness Discussion Board » Fundamentals » Reagents and Apparatus Acquisition » Interest Check: Sodium Dithionite, Na2S2O4 (Sodium Hydrosulfite) Select A Forum Fundamentals   » Chemistry in General   » Organic Chemistry   » Reagents and Apparatus Acquisition   » Beginnings   » Responsible Practices   » Miscellaneous   » The Wiki Special topics   » Technochemistry   » Energetic Materials   » Biochemistry   » Radiochemistry   » Computational Models and Techniques   » Prepublication Non-chemistry   » Forum Matters   » Legal and Societal Issues