Talk:Sodium hypochlorite/Archive 3

Should this article be merged with bleach?

There is also a Wikipedia article about bleach. I would suggest merging these two articles, or at least strictly disambiguating them (for example, discussing only chemistry in the article about sodium hypochlorite and only household use in the article about bleach). Thomas.Hedden (talk) 20:44, 23 February 2009 (UTC)

As only one voice, I'm not averse to this suggestion. Bleach is a somewhat generalized word (oxidizing or reducing agents that decolorize), although it has come to mean primarily sodium hypochlorite in the vain of "household bleach". Also, you might generally find chemists going to sodium hypochlorite, and "normal people" going to bleach....  ;-) GVB012009 (talk) 08:11, 24 February 2009 (UTC)

Bleach need not be sodium hypochlorite. Sulfur dioxide and hydrogen peroxide are used as bleaches too. So, no need to merge. --Rifleman 82 (talk) 08:46, 24 February 2009 (UTC)

Production of sodium hypochlorite

My first edit to this article will be in the ‘Production’ sub-section. As always, I welcome feedback. GVB012009 (talk) 08:18, 24 February 2009 (UTC)

Obadasi Study Perspective

All, I'd like to post a perspective on both the Bleach and Sodium Hypochlorite discussion pages pertaining to the Odabasi references (8 and 9). I have reviewed the information and found the results interesting, but Obadasi, et al. did dimensionalize the potential risk to consumers or to workers (of which it appears to be vanishingly small):

1. The highest level that Odabasi cites for concentration of carbon tetrachloride (seemingly his biggest alarm) is 459 micrograms per cubic meter -- that translates to 0.073 ppm (part per million), or 73 ppb (part per billion). The OSHA-allowable time-weighted average concentration is 10 ppm -- almost 140 times higher -- and ***over an eight-hour period***.

2. The OSHA highest allowable peak concentration (5 minute exposure for five minutes in a 4-hour period) is 200 ppm, twice as high as Odabassi's highest peak level (from the headspace of a bottle of a sample of bleach plus detergent).

I do think that we owe it the readers, if we wish to include the Obadasi information, to put it in perspective. I would welcome feedback from the group before making such an edit. GVB012009 (talk) 20:27, 26 February 2009 (UTC)

NaOCl solubility in water graph

Anybody has such a graph with dependence of solubility on various temperature water? Renaldas Kanarskas (talk) 20:16, 20 May 2009 (UTC)

use in Mister Plumber

I'd just like to point out that this chemical is used in Mister Plumber. --72.188.76.225 (talk) 02:43, 27 May 2009 (UTC)

Density?

Curious whether the density of 1.11 g/cm3 is given for 20 °C or some other temperature, and whether this is for the pentahydrate or one of the common solutions with water such as a 5%, 10%, or 12.5%. MetaEd (talk) 16:17, 14 October 2009 (UTC)

Hychlorite and Zonite

Here is a link to an FDA document on this topic. It mentions various historical matters that might be useful for anyone editing this article.

[1]

Especially see page 3 for references to the old brandnames Hychlorite and Zonite. 66.102.199.179(talk) 03:15, 18 October 2009 (UTC)

Re: Safety section

The Safety section of this article really needs to be cleaned up. Particularly the last couple passages (beginning with 'A recent European study...' ) referring to the 'Halogenated VOC from...Chlorine-Bleach- Containing Household Products' study (the link to the actual study requires further searching but theslideshow offers a good summary). If we refrain from including some of the study's more speculative conclusions, we eliminate the need to explain why they're speculative to begin with and that would go a long way to improving the section's quality and readability.
--K10wnsta (talk) 22:15, 3 March 2010 (UTC)

Production - Symproportionation?

I'm doing AS Level Chemistry in the UK at the moment, and according to my specification, the

Cl₂ + 2 NaOH → NaCl + NaOCl+ H₂O

reaction is disproportionation, rather than symproportionation (its opposite) I'd edit the main article straight away rather than posting on here but I know that AS Chemistry is notorious for telling white lies to make things simpler for candidates, so if a real Chemist could confirm this I'd be grateful, thanks :) —Preceding unsigned comment added by 86.25.230.77 (talk) 21:19, 6 June 2010 (UTC)

Other uses

In addition to the common use as household bleach, NaOCl/NaOH solutions are also the active ingredients of many commercial drain openers, liquid automatic-dishwasher detergents, and mildew removers. 121a0012 (talk) 09:39, 1 January 2011 (UTC)