The present invention relates to solid forms of (r) -6- (2-fluorophenyl) -N- (3- (2- (2-methoxyethylamino) ethyl) phenyl) -5,6-dihydrobenzo [dihydrochloride dihydrochloride] h] quinazolin-2-amine and methods for their preparation and use.a presente invenção refere-se a formas sólidas de dicloridrato de (r)-6-(2-fluorofenil)-n-(3-(2-(2-metoxietilamino)etil)fenil)-5,6-di-hidrobenzo[h]quinazolin-2-amina e métodos para preparação e uso das mesmas.