111318-30-0Relevant articles and documents
Interaction between bromothymol blue and antipyrine in dichloromethane
Gainza, Alberto Hernandez,Jimenez, Luisa Puerta
, p. 2286 - 2290 (2007/10/02)
Antipyrine (AT) reacts with bromothymol blue (BTB) in dichloromethane (DCM), forming an ion pair of 1:1 stoichiometry.Chemical equilibrium has been demonstrated and the formation constants of the ion pair at various temperatures have been calculated spectrophotometrically.The thermodynamic parameters of the reaction are ΔH = -6994 cal/mol, ΔS = -11.05 cal/K mol, and ΔG25 deg C = -3703 cal/mol.