Talk:Melamine

message: --the diagram contains no carbon. The diagram and formula C3H6N6  are inconsistent.
--Perdustin (talk) 17:42, 27 January 2023 (UTC)
replies: text: It does, in organic chemistry diagrams the carbon atoms are not written, they are at the points where the bonds (lines) meet (its a short writing form because there is no organic compound without carbon) so they are in the ring between the nitrogen atoms. 80.128.193.55 (talk) 17:38, 12 February 2023 (UTC)
thread_title:  Structural diagram is incorrect 

message: http://ap.google.com/article/ALeqM5j9TWJGihXFri_4iWWPS7iDjKrT5gD935Q0NO0
--81.234.213.165 (talk) 11:09, 15 September 2008 (UTC)
replies: text: No, this is info for 2008 Chinese milk scandal.  Such details aren't about Melamine per se, but rather about an event which had melamine as one of it's components.  NJGW (talk) 07:35, 5 October 2008 (UTC)
thread_title: Milk powder for babies containing Melamine claim two lives

message: I would like to see some information about why melamine utensils are not microwave safe. Is it because they might release formaldehyde or other toxic compound? Or is it simply because the melamine might melt?
--Qole 14:54, 4 June 2006 (UTC)
replies: text: I don't have any specialized knowledge on the subject, but I know that my melamine plates get pretty hot in the microwave.  So I don't figure it's any toxic stuff.  NickelShoe (Talk) 15:21, 5 June 2006 (UTC)
replies: text: I think you just nailed it on the head right there; its organic and it really heats up. That means at some point, its going to undergo decomposition, and that point will be a lot sooner than a material based on glass.  —Preceding unsigned comment added by 70.162.242.234 (talk) 21:25, 12 October 2008 (UTC)
thread_title: Not Microwave Safe

message: The name of this article rhymes with melanin, the substance responsible for skin pigmentation. Is it appropriate to note this fact by providing a link from one to the other? --Folajimi 15:55, 5 June 2006 (UTC)
replies: text: If it's just an "isn't this neat" random info fact, then no. If you are genuinely concerned that someone would possibly confuse melanin with melamine, then perhaps. The only reason to provide above the fold type links to (topically) unrelated articles is if people might mistakenly come to this page instead of the other one. -- 21:39, 12 December 2006 (UTC)
thread_title: Disambiguation

message: I'd like to know more about *how* those "magic" cleaning erasers made from melamine work. How are they able to clean surfaces that normal detergents and solvents cannot? --72.202.150.92 02:42, 12 December 2006 (UTC)
replies: text: Check out Magic Eraser. NickelShoe (Talk) 02:48, 12 December 2006 (UTC)
thread_title:  Cleaning Eraser action 

message: I came to this page to find out if Melamine is dishwasher safe. Would be nice to add info if anyone knows.—The preceding unsigned comment was added by 60.241.91.114 (talk • contribs).
:Did you check the bottom of the plate?  They're usually dishwasher safe, but you might be careful with heat drying them. NickelShoe (Talk) 17:02, 7 January 2007 (UTC)
replies: text:  I'd second checking the bottom.  I have some pet food bowls that say "100% Melamine / Dishwasher safe / Do not microwave" and it's likely you would find similar wording on your items. Marc Kupper (talk) (contribs) 21:41, 6 May 2007 (UTC)
replies: text: We got Melmac dishware for our wedding and 40 years later some of those plates are still in use by our daughter.  They are nearly indestructable, except putting one over a gas jet will do the job. NStahl (talk) 20:32, 22 January 2008 (UTC)
thread_title: Dishwasher Safe

message: When ingested in large amounts the substance may have effects on the kidneys and bladder, resulting in stone formation .  Andreas  (T) 22:10, 30 March 2007 (UTC)
thread_title:  Toxicity 

message: I hope someone is preparing information on how and why it's used in fertilizer. —The preceding unsigned comment was added by NStahl (talk • contribs) 09:45, 31 March 2007 (UTC)
replies: text: I could not find information of how melamine is broken down to produce nitrogen compounds that plants can take up. Is is ammonium ions or nitrates?  Andreas  (T) 15:08, 2 April 2007 (UTC)
replies: text: The bacterial metabolism cite I added under the toxicity section indicates that melamine degrades to ammonia via cyanuric acid and then allophanate. Abby Kelleyite 23:23, 26 April 2007 (UTC)
thread_title:  Use in Fertilizer 

message: It appears to me that melamine found in Chinese gluten was not used as a fertilizer, but is a residue of the pesticede cyromazine. The chemical structure of cyromazine is very similar to that of melamine.  Andreas  (T) 21:39, 6 April 2007 (UTC)
replies: text: Formula and description: http://www.generalchem.cn/template/crop/Cyromazine.htm  Andreas  (T) 22:28, 6 April 2007 (UTC)
thread_title:  Cyromazine 

message: The NYT reported melamine as being produced from coal but did not specify the process beyond being done in "boilers".  Perhaps this is some sort of Fischer-Tropsch process.  I'm looking for some reference that says this but if anyone else can find one, please add it here and in 2007 pet food crisis. Abby Kelleyite 07:23, 30 April 2007 (UTC)
replies: text: I have added some info re coal gasification in urea production and info that the manufacturer reported in the NYT produces both urea and melamine. Need that final link that says that melamine is also produced via goal gasification. Abby Kelleyite 14:20, 30 April 2007 (UTC)

text: Btw, for anyone trying to look more into the coal gasification thing, there is a nice illustrative diagram in a document proposing building a similar operation in Alaska on page 4 of the pdf. http://www.gasification.org/Docs/2006_Papers/22JOHN-Paper.pdf  I don't think it's enough on point to include as a ref in the article but might help people find other refs. Abby Kelleyite 18:49, 30 April 2007 (UTC)

text: Thankyou for the info.  I did find one reference regarding Fischer-Tropsch and nitrogen but I only have the abstract. Investigation on the Fischer-Tropsch Synthesis with Nitrogen-Containing Syngas over CoPtZrO2/Al2O3 Catalyst Dongyan Xu, Hongmin Duan, Wenzhao Li,* and Hengyong Xu Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China Received November 10, 2005 I would need someome who understands this sort of thing much better than me to see if it relevant. Abby Kelleyite 15:28, 2 May 2007 (UTC)

text: A little more verbiage from the newer NYT story (first May 3 story): "melamine scrap" which is not "pure melamine but impure melamine scrap that is sold more cheaply as the waste product after melamine is produced by chemical and fertilizer factories here."  —The preceding unsigned comment was added by AbbyKelleyite (talk • contribs) 17:54, 3 May 2007 (UTC)

text: The major motivation, btw, for adding the coal references is to indicate that what the NYT reporter appears to be talking about is not melamine resin scrap, which is an issue a number of people have raised. Abby Kelleyite 18:08, 3 May 2007 (UTC)

text: Another thing on the FT of coal, this brief reference notes that the standard FT used to create large hydrocarbons "also creates a lot of molecules in between, containing four to nine carbon atoms, which are considered waste products of the reactions." I'm wondering, if given this propensity to produce all these molecules, combined with the reference of FT involving nitrogen from above, might be a recipe for spitting out a waste product containing both melamine and cyanuric acid.  Speculation, for now. Abby Kelleyite 17:03, 4 May 2007 (UTC)

text: It seems increasingly like Barboza is talking about melamine monomer but perhaps both kinds are used as NPN adulterants.  Have you seen any reference anywhere that raises this as a possibility?  It would be good to get the debate, if any, into the article for NPOV.  Surely someone quotable has raised this possibility but I can't find it in english, anyway.  Abby Kelleyite 18:44, 3 May 2007 (UTC)

text: I haven't seen anybody in mainstream media looking into this.  In his Apr 30 article, Barboza said melamine costs "about $1.20 for each protein count per ton".  Melamine is about 66% nitrogen while protein has 16%.  Assuming a "protein count"  = 1% protein, his description means one can replace 1 ton of pure protein by 0.25 ton of melamine at a price of $120.  That gives a melamine price of $480/ton, or about 3840 yuan/ton.  Compare that with the going price of urea in China (it takes 3 molecule of urea to make 1 molecule of melamine), Barboza's melamine does look more like the monomer.  However, from a business point of view, waste melamine plastic would be much cheaper than even monomer (industrial grade of mixed by-product), somewhat less toxic and deliver almost the same amount of NPN...  --Tsiaojian lee 21:28, 3 May 2007 (UTC)
replies: text: I suspect that both may be being used, particularly with what you have reported in regard to the "prior art" of using ground urea-formaldehyde resin.  There was mention in one of the barboza pieces, if I remember correctly, that the melamine scrap he was talking about used to be free and now is auctioned off. I seriously suspect that it is a mixture of carbon, hydrogen, nitrogen of varying compositions (including melamine and cyanuric acid) produced as a residue in the coal->urea->melamine process, much like the mix of hydrocarbon waste in the standard FT coal gasification. I hope (because of the expected lower toxicity) that ground melamine resin may be the more common contaminant.  Both companies he's focused on so far, though, have been chemical manufacturers.  I fear there may be a lot of this glop.  Anyway, if you find even a chinese language only ref re ground melamine resin, I'd add it for balance. Abby Kelleyite 12:41, 4 May 2007 (UTC)
replies: text:  After doing some research, I re-wrote the synthesis section of melamine.  What you suspected indeed looks VERY LIKELY!!  The solid from melamine waste water contains mostly melamine but also some cyanuric acid etc.  Since it's an unwanted waste it would also be very cheap.  That also explains the cyanuric acid... --Tsiaojian lee 20:41, 4 May 2007 (UTC)
thread_title:  Melamine from coal 

message: I pointed the current flags to the [2007 pet food crisis] because at the moment there is much more info there, but I am no wiki policy expert.  If there is some other way to indicate that someone reading these sections should look there for more info that works for me. Also, it would help a reader if they were pointed to the proper subsections of that rather large article, but I don't know how to do that.  For toxicity, there is a subsection on "melamine and cyanuric acid in pet sickness" and for widespread use in china, there is a subsection on "melamine production and use".  Thanks for any help the more wiki knowledgable can provide.  Abby Kelleyite 14:31, 30 April 2007 (UTC)
thread_title:  Redirects to 2007 pet food crisis 

message: How are we in these times to distinguish the current melamine/food-chain scare from gross commercial indifference, subtle political terrorism or a covert military act of war ?
:Well as unfortunate as the death of thousands of pets are, it seems unlikely that killing them would be an act of war. Also, it seems unlikely that China would gain any advantage as a result of this but it's going to cost them financially so I'm not particularly sure why they would engage in 'political terrorism' Nil Einne 10:19, 8 May 2007 (UTC)
thread_title: Indifference, Terrorism, War

message: Is there any research and surveillance being done to uncover contaminants of melamine and other industrial chemicals with links -- however small -- to the food chain ?
This is important because some industrial contaminants accumulate in the tissues of living things, so ANY detectable amount is far too much.  Such contaminants include the heavy metals -- cadmium, lead, etc.  Lead is a probable contaminant because it is/was widely used as a paint pigment.  Has China outlawed such uses and removed leaded paints from buildings and industrial equipment where it might inadvertantly get into products ?
: Just added a section reviewing detection of melamine in food.  Please feel free to comment. --Tsiaojian lee 21:15, 6 May 2007 (UTC)
thread_title: Contamination of Contaminants

message: This question is posed to readers who can give insight on what non-toxic chemicals/drugs might be investigated to react with Melamine/Cyanuric acid complex to reverse the crystalurea that leads to renal failure.
Recalling that in diabetic ketoacidosis, acetoacetic acid and acetone are produced in high levels (80mg/dl or more). Question: Invitro can acetoacetic acid or acetone's keto group react with the amino group of Melamine to make a more soluble product? 
We need more information reagarding the reactions that Melamine can undergo at physiologic ph.
71.127.24.125
:This might be premature, as we're not even sure that Melamine itself is the culprit, or whether it's just a marker for another agent. --Slashme 15:19, 7 May 2007 (UTC)
replies: text:  Ditto that.  The quick & dirty way to figure out the culprit is direct animal experiments -- a millenia-old method in toxicology.  Just feed lab cats/dogs melamine with other chemical suspects at various dosage combinations.  It should become clear soon what causes the acute intoxication.  It may not explain the underlying mechanism.  But sitting in a lab & staring at those crystals is not an effective short-term solution. --Tsiaojian lee 17:12, 7 May 2007 (UTC)
replies: text: Before you use animals in testing antidotes it makes more sense to first see if the reaction being looked for can occur in the test tube. People should not be so casual about animal experiments. It is also wasteful.  —Preceding unsigned comment added by 71.127.23.22 (talk) 02:45, 19 September 2008 (UTC)
replies: text: Iso-triazines may be reformed by reaction with chromic acid to produce quinone (harmless vitamin K). Appropriately, this same reaction may be produced by consuming low pH foods that are high in chromium, such as vinegar and romaine lettuce. --Gustable (talk) 05:20, 1 October 2008 (UTC)
replies: text: Please provide a reference that supports this and explains the connection to Melamine.  You seem to feel this is very important, but have yet to proved a source for it.  NJGW (talk) 05:24, 1 October 2008 (UTC)
replies: text: Following some searching through older pages I found the reference I was looking for on the page devoted to Aniline.  Aniline is not an Iso-triazine, yet is an aromatic amine.  Experiential evidence has supported that this longshot does convert what I would assume to be unreacted aniline impurities from the melamine preparation process into quinone.  This may also remediate the other triazines experiencing a change in equilibrium.  I hope this is sufficient. --Gustable (talk) 02:51, 2 October 2008 (UTC)
replies: text: Unless there is a journal article or some other very reliable source discussing this in relation to Melamine, this is novel synthesis of other data (a form of original research).  NJGW (talk) 05:07, 2 October 2008 (UTC)
thread_title: Chemical Reactions to Reverse Crystaluria??

message: Melamine toxicity in ruminants
Melamine toxicity.
I have been surprised that in so many articles on melamine toxicity people are saying that before that pet food contamination 'the only known risk was to rodents'. Looking in the CAB Abstracts Archive I found a paper that shows crystalluria in sheep fed melamine for 11 days (Clark, R. 1966. Melamine crystalluria in sheep. CAB Record Number: 19671407708). This should be of interest to toxicologist especially as melamine is now being found widely in different animal feeds.
RT —The preceding unsigned comment was added by 194.131.255.12 (talk) 10:53, 9 May 2007 (UTC)
thread_title:  Melamine toxicity in ruminants 

message: Survey To Quantify Pet Deaths From Tainted Food
I have been so tired from all the recent developments, but I am getting back at it.  This is all too important. Abby Kelleyite 15:10, 15 May 2007 (UTC)
replies: text: Other similar surveys are being done by AAVLD, FDA and some state public health agencies.  Currently no statistical analysis (aside from geographical location) is available.  The case statistics may explain the discrepancy of melamine/CA toxicity between earlier animal experiments and actual feeding by consumers.  E.g. older, sicker animals or certain breeds could be much more affected than the rest.  --Tsiaojian lee 18:57, 15 May 2007 (UTC)
thread_title:  A new survey on pet deaths 

message: There are more up-to-date photos showing crystals in both prox and distal tubules with oxalate-type crystals in the former, while the latter seem to be associated with attenuation and loss of epithelium.  Abby Kelleyite 21:32, 15 May 2007 (UTC)
thread_title:  More recent photos on crystal formation in kidney tubules 

message: I just wanted to warn everyone that my password got hacked at Daily Kos.  I've changed it now and I think the problem is under control. You may want to change yours here as well.  It is best to be safe. Be sure to choose something with a strong level of protection. Abby Kelleyite 20:35, 15 May 2007 (UTC)
thread_title:  password problems 

message: The AVMA has some summary information on the AAVLD survey of the 347 cases that met diagnostic criteria for "pet food-induced nephrotoxicity" from April 5-June 6  and UCDavis has info on the first published toxicology study looking at melamine and CYA ingestion in cats conducted after the recall.  Abby Kelleyite (talk) 22:56, 20 November 2007 (UTC)
replies: text: More on the survey from Michigan State University including some comments re: potential for chronic toxicity.  Abby Kelleyite (talk) 17:46, 29 November 2007 (UTC)
replies: text: And here's the AAVLD proceedings from their october meeting. Page 29 reports on the survey.  Toxicology session findings start at page 100. Abby Kelleyite 20:33, 30 November 2007 (UTC)
replies: text: Looking at this new press release from MSU, I fear that in my apparent role as de facto editor in charge of adding new science info here, I may have made some errors in attribution or emphasis of new information from the AAVLD meeting in October.  My attempt has been to add information, with references, to help others reach their own conlusions about the science.  I have neither the qualifications nor the inclination to apportion credit and wish to apologize to any of the involved individuals and institutions for any errors or ommissions on my part, and wanted to assure everyone involved that I have no affiliation with any of the involved institutions and that any errors I have made are in good faith.  As with any wikipedia article, anyone is welcome to edit.  Abby Kelleyite (talk) 19:34, 7 December 2007 (UTC)
thread_title:  Toxicology study and AAVLD survey results 

message: An editor suggested merging this section with 2007 pet food recalls without additional comment. While that article and Chinese protein export contamination are the main articles for the information in this section, I think that the brief summary information provided here offer valuable context for the recent toxicology infomation and governmental advisories in the preceding sections. I would, however, be interested in hearing what anyone else thinks about this. Abby Kelleyite (talk) 15:44, 22 February 2008 (UTC)
thread_title:  Proposed merger of Reported widespread use in Chinese feed and food section 

message: I removed the following text from the "See also" section because it was out of place, but it may be useful for other editors, so I've moved it here:
:New article available describing finding melamine in seafood  samples after the recall and the method used:
:Determination and Confirmation of Melamine Residues in Catfish, Trout, Tilapia, Salmon, and Shrimp by Liquid Chromatography with Tandem Mass Spectrometry
:Wendy C. Andersen,*† Sherri B. Turnipseed,† Christine M. Karbiwnyk,† Susan B. Clark,‡ Mark R. Madson,‡ Charles M. Gieseker,§ Ron A. Miller,§ Nathan G. Rummel,§ and Renate Reimschuessel§
:Animal Drugs Research Center and Denver District Laboratory, U.S. Food and Drug Administration, Denver Federal Center, P.O. Box 25087, Denver, Colorado 80225-0087, and Center
:http://www.ncbi.nlm.nih.gov/pubmed/18494486
-- Ed (Edgar181) 15:02, 8 August 2008 (UTC)
thread_title:  Moved from article 

message: This latest development may be worth putting in the article BBC asia-pacific/NZherald.  Reports coming out suggest at least one baby has died Reuters. --Zven (talk) 08:50, 14 September 2008 (UTC)
replies: text: Uh - a lot has been added on this - but I would oppose adding more than perhaps one sentence yet - Wikipedia is not a newspaper - and all this is still in the process of happening - an article here should not be caught in any current excitement, but should reflect the final judgment as it is normally done a year or so later (generally, in other cases, information that nobody will be interested in anymore in, say, 10 years, should not be included at all). 65.37.189.161 (talk) 16:38, 17 September 2008 (UTC)
replies: text:  I think we need more than one sentence. In particular I'd like to see an encyclopedic explanation (not reportage) of the chemistry behind why someone would add toxic melamine to milk. Melamine isn't a protein, so just what sort of "protein measurement" was being hoodwinked here?  I'd also like some description of likely mechanisms for its harm. I've heard reports of "kidney stones", which are usually painful rather than fatal. What's so different about these ones? Are the stones fatal? Made of solid melamine? Or are they just simultaneous symptoms with some other mechanism actually causing the deaths?  Andy Dingley (talk) 16:47, 17 September 2008 (UTC)

text: There is conflicting information in the article.  With reference to baby powder issue, the article states: "Melamine which is a banned substance in China...".  However, elsewhere in the article it states: "China is the world's largest exporter of melamine, while its domestic consumption still grows by 10% per year."  The second statement would be incredible if Melamine was indeed a banned substance in China.  Perhaps it is a banned substance in foodstuffs?  Bernard S. Jansen (talk) 00:59, 19 September 2008 (UTC)

text: "Melamine, which is a banned substance in China" sounds more like a patriotic statement. I am changing it to "classified controlled substance". However, I feel even my modification is inaccurate. Someone who is familiar with China needs to modify that to controlled/classified substance of some classification under Chinese law. Otherwise, that statement should be removed altogether. What is the classification of melamine in China under which melamine is controlled? Someone with Chinese legal and consumer expertise please elaborate. It is not banned substance because China is world's capital of melamine-ware production.Hence Jewish Anderstein (talk) 12:12, 19 September 2008 (UTC)

text: * I have added a theory on where the melamine contamination might have come from in Talk:2008_Chinese_milk_scandal#Melamine_as_a_by-product.3F.  I am sure there are more chemists watching this article than the other one.  Can someone verify if that is even chemically possible?  Kowloonese (talk) 21:25, 30 September 2008 (UTC)
thread_title:  Melamine in milk powder 

message: Under Toxicity, US Statements subheading, there are a series of dates listed with date and month, but no year, eg: April 1. Can someone who knows when these statements where made add a year?  -Bernard S. Jansen (talk) 01:02, 19 September 2008 (UTC)
replies: text: The old US statements were from 2007 and I believe they have been moved to either the 2007 pet food recalls article or its associated talk page. Abby Kelleyite (talk) 22:50, 13 August 2009 (UTC)
thread_title:  Toxicity - US Statements - Dates 

message: Given the renal crystalization is a reoccuring problem, some research needs to be done to find some non-toxic substance that will dissovle those crystals. Something maybe with an unhindered keto group, that is also water soluble to react with the amino groups.
71.127.23.22 (talk)  —Preceding undated comment was added at 02:41, 19 September 2008 (UTC)
thread_title:  Research into what non-toxic substances dissolve Melamine

message: The wiki lists the LD50 as 3000mg/kg, which is a completely nonsensical value.  It probably needs to be micrograms instead of miligrams, but I haven't found a source for this fact.  —Preceding unsigned comment added by 205.175.225.22 (talk) 22:11, 25 September 2008 (UTC)
replies: text: Why is it nonsensical?  See Melamine MSDS --Burntnickel (talk) 17:16, 30 September 2008 (UTC)
replies: text:  The issue is that the PH is correct in the kidneys for Melanine to crystalise. How you quantify the slow progressive nature of kidney failure from kidney stone growth is difficult. Studies in rodents such as mice do not directly translate to humans --Zven (talk) 07:11, 2 October 2008 (UTC)
thread_title: Toxicity incorrect

message: I don't think it is appropriate for the first sentence of the article to contain the clause "which has been implicated in the Chinese protein export contaminations." It is better to include such comment in a later sentence.Igloo321 (talk) 07:49, 5 October 2008 (UTC)
replies: text: Good point, I changed the lead to say all that Melamine is in one sentence, though I left what melamine is most notable for in general in the lead.  NJGW (talk) 07:52, 5 October 2008 (UTC)
replies: text: I don't think the clause should be located inside the first general overview at all.  It should be located in a later section discussing Chinese product contamination rather than just up front, as this is a chemistry article, not an article discussing scandals.  ~electricRush (T C) 05:31, 2 November 2008 (UTC)
replies: text: The lead should be a mini-article, explaining the most notable aspects of a topic.  This aspect of the chemical is certainly it's most notable, though this may change in the future.  NJGW (talk) 06:25, 2 November 2008 (UTC)
replies: text: How come there isn't reference to the contamination of Chinese products exported to the UK?Fuzbaby (talk) 01:19, 21 June 2009 (UTC)
thread_title: The first sentence's reference to Chinese export contamination

message: It seems to me that testing ought not to be so expensive, won't melamine hydrolyze all the way to ammonia and CO2 if attacked with heat by, say, concentrated sodium hydroxide? Proteins, on the other hand, only break down as far as their individual amino acids, right - which will presumably remain somewhat attracted to the sodium due to their carboxyl groups. So why not test for the stuff (in foodstuffs) in a tube with concentrated NaOH solution and heat, and see how much ammonia comes off?
Last I checked, NaOH, water, and heat were pretty cheap, and detecting small amounts of ammonia as a gas is a very simple problem that could probably be approached with pH detection, additionally ammonia makes NH4Cl "clouds" when in the presence of HCl vapor, making isolated, optical detection by diffraction also possible, right?
Sure, lots of other things would fail this test too; but its not like they should be in food either, right? For example urea will probably fail it, as would simple amines in many drugs, even caffeine may decompose in a manner that would trigger failure of this test. The whole point however, is that carbohydrate, protein, and fat will NOT trigger a failure of this simple test, and those are the three primary organic components in most feedstuffs, and the problem with melamine contamination is NOT one of trace contamination, but rather, one of DELIBERATE contamination by crooks looking to substantially raise profits by diluting protein-containing material.  —Preceding unsigned comment added by 70.162.242.234 (talk) 21:34, 12 October 2008 (UTC)
replies: text: This sounds like a question best asked at the chemistry portal or wp:refdesk.  All we can do here is repeat what the best sources say.  NJGW (talk) 23:28, 12 October 2008 (UTC)
replies: text: I think that what you describe has a problem that "ammonium X" will react with NaOH to release free ammonia as well.  Since such salts are very cheap (fertilizer for example) the test could easily be defeated, even by 'accident'. Wnt (talk) 04:35, 17 January 2009 (UTC)
thread_title: Why is testing expensive?

message: Carbon nanotubes are quite unreactive to modification or addition of side groups.  For this reason, it is often useful to nitrogen-dope (i.e. insert nitrogen atoms within the nanotube framework) so that modification can be possible and more uniformly distributed.  When creating nanotubes through carbon vapour deposition, melamine can be used as a nitrogen source therefor.  —Preceding unsigned comment added by 74.210.109.147 (talk) 04:25, 9 December 2008 (UTC)
thread_title:  Use in Formation of Nitrogen-Doped Carbon Nanotubes 

message: In Oct. 2008 I started a project to measure/detect melamine, called Melaminometer which is hosted as an open source project on [OpenWetWare].  OpenWetWare is also a wiki and I have a large number of ref. articles linked from it's project page.  Since everyone here is also interested in melaminehttps://mekoong.com/melamine I wanted to mention this (and thank everyone here since a large part of the initial research used wikipedia), plus also point it out as a ref. for additions to this article.  The proposed detection method uses an enzymatic approach, since certain bacteria have been found to degrade melamine (and Atrazine, a closely related substance).  As of today this method is still waiting implementation by a fab lab. Jcline0 (talk) 04:57, 19 February 2009 (UTC)
thread_title: Melamine detection; OpenWetWare project 

message: this is over simplifed and the second part sort of incorrect. Co2 is evolved from the reaction of the water (released from the condensation of cyanuric acid with ammonia) with isocyanic acid  — Preceding unsigned comment added by 122.109.117.3 (talk) 07:15, 14 April 2013 (UTC)
thread_title:  preparation - reaction mechanism urea -melamine 

message: Hello fellow Wikipedians,
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thread_title:  External links modified 

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thread_title:  External links modified 

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thread_title:  External links modified 

message: Substituted at 23:38, 29 April 2016 (UTC)
thread_title: Assessment comment

message: Hello fellow Wikipedians,
I have just modified  on Melamine. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20081010173725/http://www.emea.europa.eu:80/pdfs/vet/mrls/077000en.pdf to http://www.emea.europa.eu/pdfs/vet/mrls/077000en.pdf
*Added archive https://web.archive.org/web/20081201105219/http://www.bartleby.com:80/61/24/M0202400.html to http://www.bartleby.com/61/24/M0202400.html
*Added archive https://web.archive.org/web/20090318122335/http://www.healthnews.com:80/alerts-outbreaks/safe-melamine-levels-named-world-health-organization-2252.html to http://www.healthnews.com/alerts-outbreaks/safe-melamine-levels-named-world-health-organization-2252.html
*Added archive https://web.archive.org/web/20071122165749/http://www.avma.org/onlnews/javma/dec07/071201c.asp to http://www.avma.org/onlnews/javma/dec07/071201c.asp
*Added archive https://web.archive.org/web/20070415115544/http://www.avma.org:80/aa/menufoodsrecall/products.asp to http://www.avma.org/aa/menufoodsrecall/products.asp
*Added  tag to http://ap.google.com/article/ALeqM5iCL58EMBN1tqq6xujZlsaITAFpCQD93BHE880
*Added  tag to http://www.cmj.org/Periodical/LinkIn.asp?journal=Chinese%20Medical%20Journal&linkintype=pubmed&year=2009&vol=122&issue=3&beginpage=245
*Added archive https://web.archive.org/web/20120212141029/http://irmm.jrc.ec.europa.eu/melamine to http://irmm.jrc.ec.europa.eu/melamine
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thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just modified 5 external links on Melamine. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Corrected formatting/usage for http://www.emea.europa.eu/pdfs/vet/mrls/077000en.pdf
*Corrected formatting/usage for http://www.bartleby.com/61/24/M0202400.html
*Corrected formatting/usage for http://www.healthnews.com/alerts-outbreaks/safe-melamine-levels-named-world-health-organization-2252.html
*Corrected formatting/usage for http://www.avma.org/aa/menufoodsrecall/products.asp
*Added archive https://web.archive.org/web/20070616050029/http://www.fsis.usda.gov/ophs/clg/Cyromazine.pdf to http://www.fsis.usda.gov/ophs/clg/Cyromazine.pdf
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thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just modified 6 external links on Melamine. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20121021011626/http://www.fao.org/ag/AGP/AGPP/Pesticid/JMPR/Download/92/Cyromazi.PDF to http://www.fao.org/ag/AGP/AGPP/Pesticid/JMPR/Download/92/Cyromazi.PDF
*Added  tag to http://jas.fass.org/content/47/6/1338
*Added archive https://web.archive.org/web/20070625030357/http://www.cdpr.ca.gov/docs/toxsums/pdfs/1023.pdf to http://www.cdpr.ca.gov/docs/toxsums/pdfs/1023.pdf
*Added archive https://web.archive.org/web/20100530065448/http://irmm.jrc.ec.europa.eu/html/activities/melamine/EUR23809EN_melamine.pdf to http://irmm.jrc.ec.europa.eu/html/activities/melamine/EUR23809EN_melamine.pdf
*Added archive https://web.archive.org/web/20081010110710/http://www.cfsan.fda.gov/~frf/lib4421.html to http://www.cfsan.fda.gov/~frf/lib4421.html
*Added archive https://web.archive.org/web/20081006060206/http://www.sequant.com/melamine to http://www.sequant.com/melamine
*Added archive https://web.archive.org/web/20090616191404/http://www.fertilizer.org/ifa/Home-Page/SUSTAINABILITY/Melamine to http://www.fertilizer.org/ifa/Home-Page/SUSTAINABILITY/Melamine
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thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just modified one external link on Melamine. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20080921003955/http://news.yahoo.com/s/ap/20080917/ap_on_re_as/as_china_baby_formula_recall to https://news.yahoo.com/s/ap/20080917/ap_on_re_as/as_china_baby_formula_recall;_ylt=Ah6kOst99plhMAY4QLFtXkes0NUE%20%20Yahoo!%20-%20China%20reports%203rd%20death%20in%20tainted%20milk%20scandal
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thread_title:  External links modified (January 2018) 

message: This was an amazing read, an all-around example of am well-written article. Yoleaux (talk) 19:36, 7 April 2020 (UTC)
thread_title:  Thank you! 

message: 1) Solubility- "Solubility in water 3240 mg/ L (20 °C)". If this were true my worktops would have holes in them. Disagreement is rife on many sites, some quote the 3240 figure (from here?). It seems to me that this must be an error.
2) "Melting point 343C (decomposition)" seems incompatible with the following line "Boiling point: Sublimes". "Boiling point: Decomposes" seems OK but no entry at all for "Boiling point" would be better.
I am not qualified to correct these errors. Request somebody who is please do so.
Pawprintoz (talk) 08:57, 22 February 2021 (UTC)
thread_title:  Seeming errors in box "Properties" 

message: First sentence states melamine is an organic compound, but it lacks carbon-carbon or carbon-hydrogen bonds. Technically, one might argue that it is inorganic. However, there are certainly exceptions to the definition of an organic compound, but I am not qualified enough to discern if this compound has been, historically, considered organic. Altoeclef (talk) 03:25, 23 November 2022 (UTC)
thread_title:  No C-C or C-H bonds. 

message: Is the compound soluble in benzene or is it not? The property list says both (moderately soluble and insoluble) can someone specify? (or maybe correct the mistake if there is any) 80.128.193.55 (talk) 17:46, 12 February 2023 (UTC)
thread_title:  Solubility in benzene? 

message: The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for deletion:
* 
Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 05:23, 15 May 2023 (UTC)
thread_title:  A Commons file used on this page or its Wikidata item has been nominated for deletion