very slightly soluble in hot alcohol[clarification needed], benzene, glycerol, pyridine insoluble in ether, benzene, CCl4
log P
−1.37
Acidity (pKa)
5.0 (conjugated acid)[3]
Basicity (pKb)
9.0 [3]
Magnetic susceptibility (χ)
−61.8·10−6 cm3/mol
Refractive index (nD)
1.872[1]
Structure
Crystal structure
Monoclinic
Thermochemistry
Std enthalpy of combustion (ΔcH⦵298)
−1967 kJ/mol
Hazards
Autoignition temperature
> 500 °C (932 °F; 773 K)
Lethal dose or concentration (LD, LC):
LD50 (median dose)
3850 mg/kg (rat, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Nverify (what is YN ?)
Infobox references
Chemical compound
Melamine/ˈmɛləmiːn/ⓘ is an organic compound with the formula C3H6N6. This white solid is a trimer of cyanamide, with a 1,3,5-triazine skeleton. Like cyanamide, it contains 66% nitrogen by mass, and its derivatives have fire-retardant properties due to its release of nitrogen gas when burned or charred. Melamine can be combined with formaldehyde and other agents to produce melamine resins. Such resins are characteristically durable thermosetting plastic used in high pressure decorative laminates such as Formica, melamine dinnerware including cooking utensils, plates, plastic products,[4] laminate flooring, and dry erase boards. Melamine foam is used as insulation, soundproofing material and in polymeric cleaning products, such as Magic Eraser.
Melamine-formaldehyde resin tableware was evaluated by the Taiwan Consumers' Foundation to have 20,000 parts per billion of free melamine that could migrate out of the plastic into acidic foods if held at 160 °F for two hours, such as if food was kept heated in contact with it in an oven.[4]
Melamine was once illegally added to baby formula in China, in order to increase the apparent protein content.[5] Ingestion of melamine may lead to reproductive damage, or bladder or kidney stones, and bladder cancer. It is also an irritant when inhaled or in contact with the skin or eyes. The United Nations' food standards body, the Codex Alimentarius Commission, has set the maximum amount of melamine allowed in powdered infant formula to 1 mg/kg and the amount of the chemical allowed in other foods and animal feed to 2.5 mg/kg. While not legally binding, the levels allow countries to ban importation of products with excessive levels of melamine.
^ abcHaynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. p. 3.516. ISBN 978-1439855119.
^Melamine from PubChem
^ abJang, Y.H., Hwang, S., Chang, S.B., Ku, J. and Chung, D.S. (2009). "Acid Dissociation Constants of Melamine Derivatives from Density Functional Theory Calculations". The Journal of Physical Chemistry A. 113 (46): 13036–13040. Bibcode:2009JPCA..11313036J. doi:10.1021/jp9053583. PMID 19845385.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ abNutrition, Center for Food Safety and Applied (December 19, 2022). "Melamine in Tableware Questions and Answers". FDA.
^Scholl, Peter F.; Bergana, Marti Mamula; Yakes, Betsy Jean; Xie, Zhuohong; Zbylut, Steven; Downey, Gerard; Mossoba, Magdi; Jablonski, Joseph; Magaletta, Robert; Holroyd, Stephen E.; Buehler, Martin (July 19, 2017). "Effects of the Adulteration Technique on the Near-Infrared Detection of Melamine in Milk Powder". Journal of Agricultural and Food Chemistry. 65 (28): 5799–5809. doi:10.1021/acs.jafc.7b02083. ISSN 0021-8561. PMID 28617599.
Melamine /ˈmɛləmiːn/ is an organic compound with the formula C3H6N6. This white solid is a trimer of cyanamide, with a 1,3,5-triazine skeleton. Like cyanamide...
Melamine foam is a foam-like material consisting of a melamine-formaldehyde condensate. It is the active component of a number of abrasive cleaner sponges...
Melamine resin or melamine formaldehyde (also shortened to melamine) is a resin with melamine rings terminated with multiple hydroxyl groups derived from...
other food materials and components being adulterated with the chemical melamine, which resulted in kidney stones and other kidney damage in infants. The...
Melamine cyanurate, also known as melamine–cyanuric acid adduct or melamine–cyanuric acid complex, is a crystalline complex formed from a 1:1 mixture...
widespread recall of many brands of cat and dog foods due to contamination with melamine and cyanuric acid. The recalls in North America, Europe, and South Africa...
and contamination of several food and feed ingredients with inexpensive melamine and other compounds, such as cyanuric acid, ammeline and ammelide, are...
Hexa(methoxymethyl)melamine (HMMM) is a hemiaminal ether commonly used as a crosslinking agent in the production of coatings and rubber items. It is produced...
performing based on cost and ease of use. Urea melamine resins offer water resistance with more melamine offering higher resistance. It is typically used...
incident. On September 30, 2008, Hong Kong authorities announced that melamine had been detected in Pocky Men's coffee cream-coated biscuit sticks made...
nitrogen atoms. A well known triazine is melamine (2,4,6-triamino-1,3,5-triazine). With three amino substituents, melamine is a precursor to commercial resins...
this purpose. Melamine formaldehyde resins (MF) are a class of impregnation resins for wood modification that are made by reacting melamine with formaldehyde...
5) Cyanuric acid is noted for its strong interaction with melamine, forming insoluble melamine cyanurate. This interaction locks the cyanuric acid into...
injected into chicken, pork, or other meats to increase their weight Urea, melamine and other nonprotein nitrogen sources, added to protein products to inflate...
amount sold. The restaurant was in the news in Japan for serving pizza with melamine-tainted dough from China in October 2008. April 1968 - Yasuhiko Shōgaki...
density fiberboard). Melamine boards range in quality primarily because of the amount of resin deposited on the base material. Some melamine boards remain clean...
accuracy of the color. Wooden splints, Nichrome wires, cotton swabs, and melamine foam are suggested for support. Safety precautions are crucial due to the...
made in its three Beijing factories, on suspicion of contamination with melamine. The recall affected the mainland China markets, Taiwan, Hong Kong and...
Babayan, A.V.Aleksandryan, "Toxicological characteristics of melamine cyanurate, melamine and cyanuric acid", Zhurnal Eksperimental'noi i Klinicheskoi...
related to melamine but with one amino group replaced by phenyl. Benzoguanamine is used in the manufacturing of melamine resins. Unlike melamine ((CNH2)3N3)...
infants and killing six. Their infant formula had been adulterated with melamine, which can cause kidney stones and other complications. It received a bankruptcy...
contamination by melamine unfolded. Complaints about kidney problems traced back to a brand of infant formula, subsequent discoveries of melamine contamination...
In October 2008, it became embroiled in a scandal involving traces of melamine being found in its eggs. Hanwei group specialises in egg-based products...
as melanine in French and Dutch) Melamine, an organic compound Melamine resin, a plastic material made from melamine and formaldehyde This disambiguation...
Current Maxim Maspion Electronics Tivoli Maspion Plastic Plasticwares Vanda Melamine Panda Maslon Aubecq Logam Jawa Ishizuka PVC Meglio Bank Maspion Former...