Talk:Bromine
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Article changed over to new Wikipedia:WikiProject Elements format by maveric149. Elementbox converted 14:20, 1 July 2005 by Femto (previous revision was that of 21:48, 21 June 2005).
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[edit] Information Sources
Some of the text in this entry was rewritten from Los Alamos National Laboratory - Bromine. Additional text was taken directly from the Elements database 20001107 (via dict.org), Webster's Revised Unabridged Dictionary (1913) (via dict.org) and WordNet (r) 1.7 (via dict.org). Data for the table was obtained from the sources listed on the main page and Wikipedia:WikiProject Elements but was reformatted and converted into SI units.
[edit] Talk
There is a bromine cation that is used in electrophilic substitution with benzene (in the presence of FeBr3). What is the shorthand name of this bromine cation? (i think it is bromile or bromite, not really sure)
- I got redirected from bromide to the article. So, I was hoping to see something about it being put in soldier's tea to dampen their ardour. --bodnotbod 00:58, Jul 27, 2004 (UTC)
I'm not intimately familiar with bromine, but since the melting poing is below 273K, it seems that bromine should not be solid at STP. Zander 19:59, 13 Feb 2005 (UTC)
Doesn't bromine naturaly occur as the diatomic molecule Br2. Might be worth including. Oatzy
- Good idea. I added it. Edgar181 12:01, 7 March 2006 (UTC)
Well, that is what is bothering me. Is the density information for the naturally occurring diatomic molecule or for just Br? I think it's for the former... But I can't tell!! 216.165.56.155 04:51, 7 March 2006 (UTC)
- Yes, the density is for Br2. Edgar181 11:56, 7 March 2006 (UTC)
The top of the page says that 730,000,000 kg (730,000 metric tons) were produced in 1993. Under Occurrence and Preparation, worldwide production is listed as 500,000 metric tons (in 2001), no source given. The graph seems to indicate the former figure is incorrect. Could we get a single, authoritative, and recent number for this? Kanhef (talk) 01:07, 18 December 2007 (UTC)
[edit] Ozone Depletion
The article states that "bromine has been evaluated to have an ozone depletion potential of 60 when compared to chlorine." What does this potential of 60 mean? Is it a factor of 60, 60%? Someone please clarify this. --Vertigo
-- It's just 60: http://en.wikipedia.org/wiki/Ozone_depletion_potential . I turned the "ozone depletion potential" phrase to a link for clarification.Bengisuk 15:31, 17 February 2007 (UTC)
[edit] Recycling?
I am going to delete the recycling section. Recycling appears to be impossible for most of the applictions listed, since it is often found in the product (ie. flame retardants). Also, bromine is not particularily expensive, contrary to the "high cost" claim. In fact, it is often used in organic reactions (ie. alkane addition reactions where selectivity is important) because it is much less expensive than iodine (it also reacts much faster in addition reactions and is a liquid). Polonium 20:25, 25 October 2006 (UTC)
[edit] Viscosity
What is the viscosity of Bromine? --Savant13 19:22, 10 April 2007 (UTC)
- 1.252 mPa·s (0 °C), 0.944 mPa·s (25 °C), 0.746 mPa·s (50 °C), according to the CRC Handbook, 85th. (It's a bit unclear about accuracy, it's specified for the whole table as ranging "from 1% in the best cases to 5 to 10% in the worst cases".) Femto 10:54, 11 April 2007 (UTC)
[edit] Bromine in biology
Does bromine serve any biological function like chlorine and iodine do? --Seven of Nine 06:53, 12 April 2007 (UTC)
- Looks like it plays some role in marine sponges and can screw up the synthesis of thyroid hormones in other animals
- Any one fancy doing the reading for this one and writing it up properly? 163.1.181.208 (talk) 22:20, 22 February 2008 (UTC)
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- There are natural products of biological origin containing bromine; a famous example is Tyrian purple. --Itub (talk) 11:50, 25 February 2008 (UTC)
[edit] Density
The density of elemental bromine is 3.12 g/mL, per 88th CRC. Is it wikipedia practice to list the density of the element or of the diatom on the element's page? Christopher 21:29, 30 August 2007 (UTC)
