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Melamine

Names Preferred IUPAC name1,3,5-Triazine-2,4,6-triamineOther names 2,4,6-Triamino-s-triazineCyanurotriamideCyanurotriamineCyanuramideIdentifiers CAS Number108-78-13D model (JSmol)Interactive imageChEBICHEBI:27915ChemSpider7667ECHA InfoCard100.003.288KEGGC08737PubChemCID7955UNIIN3GP2YSD88CompTox Dashboard(EPA)DTXSID6020802InChIInChI=1S/C3H6N6/c4-1-7-2(5)9-3(6)8-1/h(H6,4,5,6,7,8,9)Key: JDSHMPZPIAZGSV-UHFFFAOYSA-NInChI=1/C3H6N6/c4-1-7-2(5)9-3(6)8-1/h(H6,4,5,6,7,8,9)Key: JDSHMPZPIAZGSV-UHFFFAOYAFSMILESNc1nc(N)nc(N)n1Properties Chemical formulaC3H6N6Molar mass126.123 g·mol Appearance White solid Density1.573 g/cm Melting point343 °C (649 °F; 616 K) (decomposition) Boiling pointSublimes Solubility in water3240 mg/ L (20 °C) Solubilityvery slightly soluble in hot alcohol, benzene, glycerol, pyridine insoluble in ether, benzene, CCl4log P−1.37 Acidity (pKa) 5.0 (conjugated acid) Basicity (pKb) 9.0 Magnetic susceptibility (χ)−61.8·10 cm/mol Refractive index (nD)1.872 Structure Crystal structureMonoclinic Thermochemistry Std enthalpy ofcombustion(ΔcH298)−1967 kJ/mol Hazards GHS labelling: PictogramsSignal wordWarningHazard statementsH351, H373Precautionary statementsP203, P260, P280, P318, P319, P405, P501Autoignitiontemperature500 °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 ( ?)

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