Patent ID: 8292995

Claim:
A salt of a sulfonated dye, said salt modulating a stability of said dye, wherein said salt comprises at least one phosphazene cation of formula (C): wherein: R 15 , R 16 and R 17 are each independently selected from the group consisting of: C 6-12 aryl, C 5-12 heteroaryl; N(R 20 )(R 21 ) and —N═P[N(R 22 ) 2 ] 3 ; R 18 and R 19 are each independently selected from the group consisting of: H and C 1-8 alkyl; or R 18 and R 19 are together: ═P(Ph) 3 ; R 20 and R 21 are each independently selected from the group consisting of: H and C 1-8 alkyl; or R 20 and R 21 are together joined to form a nitrogen-containing C 5-10 heterocycloalkyl group; and R 22 is C 1-6 alkyl.