El dióxido de silicio es una sustancia amorfa que se produce sintéticamente bien mediante un proceso de hidrólisis en fase de vapor, que da sílice pirogenada, bien mediante un proceso húmedo, que da sílice precipitada, gel de sílice, o sílice hidratada.
The task of establishing that revenue has been received and expenditure incurred in a lawful and regular manner and that the financial management has been sound shall also encompass the utilisation by bodies outside the Commission of Community funds they have receivedEurlex2019 Eurlex2019