Calcium phosphate colorants are provided that comprise calcium phosphate
particles, a dye, and aluminum hydroxide and which are resistant to dye
migration and suitable for use in food, drugs and cosmetics. The calcium
phosphate particles are coated with a dye and the dye is fixed to the
particles by the aluminum hydroxide. Also provided is a method for making
a calcium phosphate colorant in which aluminum hydroxide is mixed with a
calcium phosphate slurry to deposit aluminum hydroxide onto the calcium
phosphate particles contained within the slurry.