Method for obtaining photostable valentinite and valentinite thus obtained

摘要

The invention relates to a process for obtaining photostable valentinite and to valentinite obtained by said process. The process consists in carrying out a basic hydrolysis of antimony trichloride at a temperature comprised between about 80 DEG and 100 DEG C. with a weight ratio of H2O/Sb2O3 equal to or greater than about 10. Obtention of photostable valentinite.