, Section2={{Chembox Properties , Formula = C₆H₉N₁₁ , MolarMass = 235.21 g/mol , Appearance = white powder , Density = , MeltingPt = , MeltingPt_notes = , BoilingPt = , BoilingPt_notes = , Solubility = insoluble , SolubleOther = slightly soluble in acids , Solvent = , pKa = , pKb = , Section7={{Chembox Hazards , MainHazards = , NFPA-H = , NFPA-F = , NFPA-R = , NFPA-S = , FlashPt = , AutoignitionPt = , ExploLimits = , PEL = Melam (''N2''-(4,6-diamino-1,3,5-triazin-2-yl)-1,3,5-triazine-2,4,6-triamine) is a condensation product of

melamine Melamine 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 67% nitrogen by mass, and its derivatives have fire retardant properties due t ...

Synthesis

Melam was discovered by

Liebig Justus Freiherr von Liebig (12 May 1803 – 20 April 1873) was a German scientist who made major contributions to agricultural and biological chemistry, and is considered one of the principal founders of organic chemistry. As a professor at t ...

in 1834 from the residue of heating

ammonium thiocyanate Ammonium thiocyanate is an inorganic compound with the formula NH4SCN. It is the salt of the ammonium cation and the thiocyanate anion. Uses Ammonium thiocyanate is used in the manufacture of herbicides, thiourea, and transparent artificial resin ...

Chemical property

In the presence of 30%

ammonia Ammonia is an inorganic compound of nitrogen and hydrogen with the formula . A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell. Biologically, it is a common nitrogenous was ...

, melam undergoes hydrolysis to form ammeline and

. It also reacts with concentrated

nitric acid Nitric acid is the inorganic compound with the formula . It is a highly corrosive mineral acid. The compound is colorless, but older samples tend to be yellow cast due to decomposition into oxides of nitrogen. Most commercially available nitri ...

, producing

cyanuric acid Cyanuric acid or 1,3,5-triazine-2,4,6-triol is a chemical compound with the formula (CNOH)3. Like many industrially useful chemicals, this triazine has many synonyms. This white, odorless solid finds use as a precursor or a component of bleach ...

. Upon heating, melam first loses ammonia to form

melem In chemistry, melem is a compound with formula ; specifically, 2,5,8-triamino-heptazine or 2,5,8-triamino-tri-''s''-triazine, whose molecule can be described as that of heptazine with the three hydrogen atoms replaced by amino groups. It is a whit ...

, and then

melon A melon is any of various plants of the family Cucurbitaceae with sweet, edible, and fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit. Botanically, a melon is a kind of berry, specifically a "pepo". The ...

References

* B. Bann and S.A. Miller, "Melamines and derivatives of melamine", ''

Chemical Reviews ''Chemical Reviews'' is peer-reviewed scientific journal published twice per month by the American Chemical Society. It publishes review articles on all aspects of chemistry. It was established in 1924 by William Albert Noyes (University of Illinoi ...

'', vol.58, p131-172 (1958). Triazines Secondary amines Polyamines