Talk:Glycolic acid

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Does anyone have a pK_a or K_a value for glycolic acid as this is what I was looking for specifically. I found at this site a value of 1.47*10-4 which, to my calculations tranlates to a pK_a of 3.83 (to 2 decimal places). However, I have no specialist knowledge of chemistry and do not fully understand why there are no 2nd and 3rd values and, if they exist, why not to use them. Some help is required here, thanks in advance! Hydraton31 22:09, 4 June 2006 (UTC)

[edit] Cleanup

I performed a real quick cleanup, but a solid reference for the chembox needs to be indentified so that accurate data can be entered. I haven't checked if hydroxyacetic acid redirects here, but it should.

I'll check back here and edit a bit more when i get a chance

Dakoman 02:28, 8 June 2006 (UTC)

Yes, hydroxyacetic acid redirects to this article. As far as I can remember I got all the data in the chembox from a Sigma-Aldrich MSDS. Berserker79 09:48, 8 June 2006 (UTC)

[edit] Tattoo removal?

I don't think this article should reference tattoo removal until someone can provide a source that this treatment works or even exists. I am unable to find any information to suggest glycolic acid can help remove tattoos.

I agree. Without a reliable source, the information should be removed. (It looks like it already has been.) It can be added back in later if properly sourced. --Ed (Edgar181) 16:01, 14 November 2006 (UTC)

[edit] External link addition to glycolic.org

There has been a recent addition (reverted a number of times and re-added) of a link to glycolic.org, with the description "Official site". Glycolic acid is a generic name of a chemical — and does not have an "official site". The referenced external link is to an "informational page" on a site promoting glycolic acid for facial peels. Directly at the top of the linked page is a link for "Store" which leads to the page selling the products. I believe this link is inappropriate as:

1. Link to a commerical site. (Wikipedia is not for advertising.)
2. Inappropriately calling it an "official site", implying that it has some special standing with relation to the topic of the article.

— ERcheck (talk) 14:11, 4 March 2007 (UTC)