Talk:Aluminium sulfate

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[edit] Wikipedia paid by aldrich and Fisher?

Dear Sirs,

a discussion about the commerciality of "Suppliers" is started here: http://en.wikipedia.org/wiki/User_talk:213.188.227.119

My main sorrow is, that these "suppliers" are in front of the literature and external links, making the commercial links seem to be more important than the scientific contents.

http://en.wikipedia.org/wiki/User_talk:213.188.227.119

Best regards —The preceding unsigned comment was added by 213.188.227.119 (talk • contribs).

[edit] Medical Uses

If memory serves, Aluminium Sulphate is also used as a styptic (to check bleeding)... (AcrophobicEagle 06:51, 2 September 2005 (UTC))

[edit] Hydration

There is an inconsistancy in the article over the number of water molecules in the hydrate, either sixteen or eighteen. I will try to resolve this as soon as I can, and any input from other editors is welcome! Physchim62 08:23, 29 September 2005 (UTC)

  • The hexadecahydrate (16H2O) is the varient sold by Sigma-Aldrich Co., and the one to which the CAS number in the table refers. I have changed the preparation section accordingly. Physchim62 06:24, 30 September 2005 (UTC)
  • My sources show a variety of hydrates... General Chemical supplies a commercial 14H2O version and the current Fisher Scientific catalog indicates that their hydrate has "nH2O n=approx. 12-14". Two of my books, Standard Methods (in section 4500-NO3-D) and Water Quality, both refer to the 18H2O hydrate which is where I was originally looking. Perhaps it's best if we just say that there are a variety of hydrates ranging from 12 to 18? Musser 18:03, 5 October 2005 (UTC)
    • Eaton, Andrew D.; Clesceri, Lenore S.; & Greenberg, Arnold E. (1995). Standard Methods for the Examination of Water and Wastewater. American Public Health Association, American Water Works, Association, & Water Environment Federation. ISBN 0-87553-223-3. 
    • Tchobanoglous, George; & Schroeder, Edward D. (1985). Water Quality. Addison-Wesley. ISBN 0-201-05433-7. 
      • I find 18H20 more commonly, JTBaker and Richard J. Lewis,Sr. (1993). Hawley's Condensed Chemical Dictionary. 12th Edition. Van Nostrand Reinhold Company. ISBN 0-47123624-1.  (can't find the ISBN for 12th edition). I have made a note that both hydrates are commonly found. --Ben Best 21:54, 15 November 2007 (UTC)

[edit] CAS number

Please check compound's CAS number. Its international chemical safety card says the number would be 10043-01-3 but referring the article the number would be 11828-11-8. Please check out which of them is correct and edit the article if needed. -Anzee 19:27, 30 November 2006 (UTC)

Molecular mass also seems to be incorrect. -Anzee 19:30, 30 November 2006 (UTC)

Looking into it.
You are right, 11828-11-8 does not exist, 10043-01-3 is aluminum sulfate 18-hydrate. I'll make some changes --Dirk Beetstra T C 19:36, 30 November 2006 (UTC)