. 2022 Aug 8;6(20):2994–3005. doi: 10.1039/d2qm00375a

Kinetic discoloration constants of SINO-1, SINO-2 and NIPS-1 in 2 × 10⁻⁵ M solutions in toluene, THF and DMF at 25 °C from their MC form. *k₂ constant of the bi-exponential decay.

Dye	k (s⁻¹) Toluene	k (s⁻¹) THF	k (s⁻¹) DMF
SINO-1	0.59	1.2	0.77
SINO-2	0.58; 3.8 × 10⁻²*	0.83	0.51
NIPS-1	28	—	8.1

Kinetic discoloration constants of SINO-1, SINO-2 and NIPS-1 in 2 × 10−5 M solutions in toluene, THF and DMF at 25 °C from their MC form. *k2 constant of the bi-exponential decay.