TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The milling step includes a solid milling media which can be separated from the nanodispersion. The milling step includes a dispersion agent, which is sulfates, sulfonates, acrylic or styrene-acrylic copolymers, sulfonated polyesters or styrenics, phosphorated polyesters or dispersion agents containing amine, acidic or poly ether functional groups. The milling step includes another solid pigment provided that the fluorinated metal phthalocyanine comprises at least 50 wt.% of the mixture. Preferred Components: The milling media is a polymeric resin or a ceramic particle. At least 75 volume% of the particles have a particle size of less than 30 nm, at least 70 volume% of the particles have a particle size of less than 22 nm and at least 65 volume% of the particles have a particle size of less than 18 nm. The organic solvent has a gamma c hydrogen bonding parameter of at least 8. The organic solvent is ketones, amides, alcohols, polyols, ethers or esters. Preferred Definitions:    z = 1;    M = cu2+ (when n is 0) or Al3+ (when n is 1 and L is X);    X = halo, OH, -O-, -O-Si(R1)2-O-Si(R1)2-O- (preferred) or -O-Si(R1)2-R1-Si(R1)2-O-;    R1 = alkyl or aryl; and    R = fluoro (preferred) or trifluoromethyl.    SPECIFIC COMPOUNDS - The use of 11 compounds (II) is disclosed e.g. bis(tetrafluorophthalocyanylalumino)-1,1,3,3-tetraphenyl-1,3-disiloxane of formula (IIa) and fluorinated phthalocyanine compounds of formula (IIb)-(IIe).    EXAMPLE - To a stainless steel cold water jacketed vessel (1 l) with a specially designed baffle, 244 g of a 1:1 (w/w) solvent mixture comprised of propylene glycol monomethyl ether acetate and cyclohexanone was introduced along with Solsperse 41000 (RTM: Dispersant polymer) (11.25 g). Then, a 50 mm diameter tool steel D blade connected to a vertical Caframo mechanical stirrer was submerged into the solvent. While operating the stirrer at 500 rpm, bis(tetrafluorophthalocyanylalumino)-1,1,3,3-tetraphenyl-1,3-disiloxane (45 g) was added, followed by 0.2 mm Zirstar (RTM: Zirconium silicate milling media) (600 g). The resulting dispersion was milled by gradually increasing the mixing rate starting with 1600 rpm for 18 hours, then ramping to 2800 rpm over 6 hours, holding at 2800 rpm for 18 hours and finishing with 3000 rpm for 5 hours. The dispersion was isolated after separation from the milling media by pressure filtration through a 20 micron filter.