Talk:Sodium dithionite

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Also adding reducing potential would be nice134.53.50.60 16:49, 15 January 2007 (UTC) Never mind maybe I should read Jasoninkid 16:55, 15 January 2007 (UTC)[reply]

Toxicity

The first sentence says it is toxic, but the article later makes reference to the compounds' low toxicity at 5gm/kg, which seems pretty nontoxic to me - means an adult of 50kg would need to consume 250 grams or a half pound of the pure compound. Unlikely to ever occur, so I removed the initial toxic mention. 70.232.28.207 00:08, 14 October 2007 (UTC)[reply]

Redox potential

The reduction potential, E°′, of −0.66 V is for the redox couple [SO₂]⁻/[HSO₃]⁻. The cited Eur. J. Chem. article notes that above 10 nM, the [SO₂]⁻ species exists as a dimer, i.e., [S₂O₄]²⁻, and that the midpoint potential increases with increasing dithionite concentration: ΔE_m/Δlog([S₂O₄²⁻]) = 29 mV. At typical dithionite concentrations of 1 mM, the reversible potential is −0.473 V. Grunkhead 10:00, 3 March 2009 (UTC)[reply]

Reference

Not my kind of thing, but if anyone wants to expand it, this link says much more about its properties, synonyms and uses. Tearlach 16:50, 16 August 2005 (UTC)[reply]

This stuff is in Dylon's Fabric Colour Stripper as a domestic pre-dye. You dissolve it (300g) in 2 litres of warm water and add it to a 95 deg C wash. The instructions say "may not remove some colours such as bright greens, bright blues and indigo". I'm not sure why - the chemistry of these things is fun, isn't it? 90.192.184.78 14:07, 10 July 2007 (UTC)[reply]