Melamine → Methylphosphonic acid melamine salt
Reaktionsgleichung
[CH3:1][P:2](=[O:5])([OH:4])[OH:3].[N:6]1[C:13]([NH2:14])=[N:12][C:10]([NH2:11])=[N:9][C:7]=1[NH2:8]>O>[N:6]1[C:13]([NH2:14])=[N:12][C:10]([NH2:11])=[N:9][C:7]=1[NH2:8].[CH3:1][P:2](=[O:3])([OH:5])[OH:4]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of methylphosphonic acid (28.8 parts, 0.3 mol) in water (50 milliliters) is added dropwise to a suspension of melamine (37.8 parts, 0.3 mol) in water (500 milliliters) at refluxing temperatures over 30 mins. A clear solution is formed. Heating is continued for a further 2 hours and the reaction mixture is evaporated to dryness under reduced pressure. The solid product is collected, washed with methanol and dried at 80° C. under vacuum to give 64 parts of methylphosphonic acid melamine salt having melting point >250° C. Calculated for C4H11N6O3P: %C 21.62, %H 4.95, %N 37.84, %P 13.96. Found: %C 21.51, %H 4.80, %N 37.64, %P 13.66.