Abstract: A process for the wet granulation of organic pigment is disclosed which consists in treating under vigorous agitation an aqueous suspension of pigment with acetic anhydride, propionic anhydride or a mixture thereof. Acetic anhydride is used preferentially. After hydrolysis of the anhydride, besides the granules, an aqueous solution of acid or its corresponding salt, directly saleable or re-usable in the chemical industry, is recovered whereby problems related to the recovery of organic solvents are avoided.

Abstract: The invention relates to copper phthalocyanine pigments, characterized in that they have a specific surface according to BET of between 15 to 65 m.sup.2 /g and a .beta. form content of between 3 and 85%, and in that they contain up to 10% of a fatty amine or a mixture of fatty amines of the formula: ##STR1## in which R.sub.1 represents a non-aromatic, C.sub.1 to C.sub.22 aliphatic or alicyclic hydrocarbon chain, R.sub.2 represents hydrogen or a non-aromatic, C.sub.1 to C.sub.22 aliphatic or alicyclic hydrocarbon chain, the sum of the carbon atoms of chains R.sub.1 and R.sub.2 is between 6 and 50 , R.sub.3 represents hydrogen or a C.sub.1 to C.sub.4 aliphatic radical, and p varies from 0 to 20.The invention also relates to a process for preparing these pigments and processes for their use for the coloration of inks, paints, plastics materials, textiles and leathers and coating of various substrates.