300 parts of water followed by adjusting the ph value of the resulted solution to 4 6 reverse osmosis was performed to remove the salts from the resulted solution and the content of salt is less than 0 5 by weight after desalination then 2 parts of the compound of the formula ii 2 was added into the resulted solution followed by mixing and adjusting the ph value to 5 0 5 5 finally the resulted solution was dried by spray drying to obtain a dye composition of the present example 20 parts of the compound of the formula i 13 and 80 parts of the compound of the formula i 14 were mixed with 300 parts of water followed by adjusting the ph value of the resulted solution to 6 8 reverse osmosis was performed to remove the salts from the resulted solution and the content of salt is less than 0 5 by weight after desalination then 2 parts of the compound of the formula ii 1 was added into the resulted solution followed by mixing and adjusting the ph value to 6 5 7 5 finally the resulted solution was dried by spray drying to obtain a dye composition of the present example the method for preparing the dye composition of the present example was the same with the method illustrated in example 2 except that the compound of.