| 摘要 |
A basic aluminum composition comprising an empirical formula: Al2(OH)6—aXa where 0.5≦̸a≦̸5.0, and X is an anion of nitrogen; and wherein the composition possesses an NMR spectrum in which a −40 to +40 ppm resonance line comprises at least 60% of the total area of the NMR spectrum.
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