Melamine

Melamine

Names
IUPAC name 1,3,5-Triazine-2,4,6-triamine
Other names 2,4,6-Triamino-s-triazine Cyanurotriamide Cyanurotriamine Cyanuramide
Identifiers
CAS Number	108-78-1 Y
3D model (Jmol)	Interactive image
ChEBI	CHEBI:27915 Y
ChemSpider	7667 Y
ECHA InfoCard	100.003.288
KEGG	C08737 N
PubChem	7955
UNII	N3GP2YSD88 Y
InChI InChI=1S/C3H6N6/c4-1-7-2(5)9-3(6)8-1/h(H6,4,5,6,7,8,9) Y Key: JDSHMPZPIAZGSV-UHFFFAOYSA-N Y InChI=1/C3H6N6/c4-1-7-2(5)9-3(6)8-1/h(H6,4,5,6,7,8,9) Key: JDSHMPZPIAZGSV-UHFFFAOYAF
SMILES c1(nc(nc(n1)N)N)N
Properties
Chemical formula	C3H6N6
Molar mass	126.12 g/mol
Appearance	White solid
Density	1.574 g/cm3
Melting point	345 °C (653 °F; 618 K) (decomposition)
Boiling point	Sublimes
Solubility in water	3240 mg/ L (20 °C)
Solubility	very slightly soluble in hot alcohol, benzene, glycerol, pyridine insoluble in ether, benzene, CCl4
log P	-1.37
Acidity (pKa)	5.0
Magnetic susceptibility (χ)	-61.8·10−6 cm3/mol
Refractive index (nD)	1.872
Structure
Crystal structure	monoclinic
Thermochemistry
Std enthalpy of combustion (ΔcHo298)	-1967 kJ/mol
Hazards
Autoignition temperature	> 500 °C
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).
N  (what is YN ?)
Infobox references

Melamine ⁱ/ˈmɛləmiːn/ is an organic base and a trimer of cyanamide, with a 1,3,5-triazine skeleton. Like cyanamide, it contains 67% nitrogen by mass and, if mixed with resins, has fire retardant properties due to its release of nitrogen gas when burned or charred, and has several other industrial uses. Melamine is also a metabolite of cyromazine, a pesticide. It is formed in the body of mammals that have ingested cyromazine. It has been reported that cyromazine can also be converted to melamine in plants.

Melamine combines with cyanuric acid and related compounds to form melamine cyanurate and related crystal structures, which have been implicated as contaminants or biomarkers in Chinese protein adulterations.

The German word was coined by combining the words: melam (a derivative of ammonium thiocyanate) and amine. Melamine is, therefore, unrelated etymologically to the root melas (μελας, meaning black in Greek), from which the words melanin, a pigment, and melatonin, a hormone, are formed.