Melamina: Perbedaan antara revisi

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Mengganti Melamine2.svg dengan Structural_formula_of_melamine.svg (berkas dipindahkan oleh CommonsDelinker; alasan: fix large margins).
 
(10 revisi perantara oleh 6 pengguna tidak ditampilkan)
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| Reference =
<ref>''Merck Index'', 12th Edition, '''5853'''.</ref>
| ImageFileL1 = Melamine2Structural formula of melamine.svg
| ImageSizeL1 = 150px
| ImageFileR1 = Melamine-3D-balls.png
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| PEL = }}
}}
'''Melamina'''<ref>http://www.pusatbahasa.diknas.go.id/glosarium/index.php?gloss_asing=melamine&gloss_indonesia=&jenis=contain&Bidang=all&infocmd=Cari {{Webarchive|url=https://web.archive.org/web/20080929084312/http://www.pusatbahasa.diknas.go.id/glosarium/index.php?gloss_asing=melamine&gloss_indonesia=&jenis=contain&Bidang=all&infocmd=Cari |date=2008-09-29 }}></ref> adalah senyawa [[basa organik]] dengan rumus kimia [[karbon|C<sub>3</sub>]][[hidrogen|H<sub>6</sub>]][[nitrogen|N<sub>6</sub>]] dan memiliki nama [[IUPAC]] '''1,3,5-triazina-2,4,6-triamina'''. Ia hanya sedikit larut dalam air.
 
Melamina adalah [[trimer]] dari [[sianamida]], dan seperti sianamida, ia mengandung 66% nitrogen (berdasarkan massa). Ia merupakan [[metabolit]] dari [[siromazina]], sejenis [[pestisida]]. Melamina terbentuk dalam tubuh mamalia yang mengonsumsi siromazina.<ref>[{{Cite web |url=http://www.emea.europa.eu/pdfs/vet/mrls/077000en.pdf |title=Report on cyromazine of the European Medicines Agency] |access-date=2008-09-24 |archive-date=2008-10-10 |archive-url=https://web.archive.org/web/20081010173725/http://www.emea.europa.eu/pdfs/vet/mrls/077000en.pdf |dead-url=yes }}</ref> Dilaporkan juga siromazina diubah menjadi melamina pada tanaman.<ref>Lori 0. Lim, Susan J. Scherer, Kenneth D. Shuler, and John P. Toth. Disposition of [[Cyromazine]] in Plants under Environmental Conditions ''J. Agric. Food Chem.'' 1990, 38, 860-864 [http://pubs.acs.org/cgi-bin/abstract.cgi/jafcau/1990/38/i03/f-pdf/f_jf00093a057.pdf?sessid=6006l3]</ref><ref>[{{Cite web |url=http://www.fao.org/ag/AGP/AGPP/Pesticid/JMPR/Download/92/Cyromazi.PDF [[|title=&#91;&#91;FAO]]&#93;&#93; report on cyromazine] |access-date=2008-09-24 |archive-date=2012-01-25 |archive-url=https://web.archive.org/web/20120125014436/http://www.fao.org/ag/AGP/AGPP/Pesticid/JMPR/Download/92/Cyromazi.PDF |dead-url=yes }}</ref>
 
== Sintesis ==
Baris 61:
: 6 (NH<sub>2</sub>)<sub>2</sub>CO → C<sub>3</sub>H<sub>6</sub>N<sub>6</sub> + 6 NH<sub>3</sub> + 3 CO<sub>2</sub>
 
Pertama-tama, urea terurai menjadi [[asam sianat]] pada [[reaksi endotermik]]: (NH<sub>2</sub>)<sub>2</sub>CO → [[HCNO]] + NH<sub>3</sub>. Kemudian [[asam sianat]] ber[[polimer]]isasi membentuk melamina dan [[karbon dioksida]]: 6 HCNO → C<sub>3</sub>H<sub>6</sub>N<sub>6</sub> + 3 CO<sub>2</sub>. Reaksi kedua adalah [[eksotermik]], namuntetapi keseluruhan proses reaksi bersifat [[endotermik]]
 
== Lihat pula ==
Baris 67:
* [[Triazina]]
* [[Sianamida]]
* [[Asam sianurat]]
 
== Referensi ==
Baris 75:
* [http://www.romerlabs.com Rapid Melamine ELISA Test Kit]
* [http://toxnet.nlm.nih.gov/cgi-bin/sis/search/r?dbs+hsdb:@term+@na+Melamine NLM Hazardous Substances Databank – Melamine]
* [http://www.sciencelab.com/xMSDS-Melamine-9924600 Melamine Materials Safety Data Sheet (MSDS)] {{Webarchive|url=https://web.archive.org/web/20070927000610/http://www.sciencelab.com/xMSDS-Melamine-9924600 |date=2007-09-27 }}
* [http://www.inchem.org/documents/sids/sids/108781.pdf OECD Screening Information Data Set (SIDS): Melamine] {{Webarchive|url=https://web.archive.org/web/20081001230407/http://www.inchem.org/documents/sids/sids/108781.pdf |date=2008-10-01 }} (High Production Volume Chemicals Screening Information,PDF, 89 pages).
* [http://www.fda.gov/oc/opacom/hottopics/petfood.html FDA Web Page with Information on Pet Food Recall (due to Melamine contanimination )] {{Webarchive|url=https://web.archive.org/web/20080916040802/http://www.fda.gov/oc/opacom/hottopics/petfood.html |date=2008-09-16 }}
 
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[[Kategori:Amina]]
[[Kategori:Triazina]]
[[Kategori:Keamanan pangan]]
 
 
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