Hoek W, Kamphuis M, Gast R
J Clin Chem Clin Biochem. 1981 Dec;19(12):1209-10.
The molar lineic absorbance of haemiglobin cyanide was determined by direct titration of haemiglobin with cyanide: 540 epsilon HiCN = 1101 m2 X mol(-1). The stability constant (equilibrium association constant): KHiCN = 1.5 X 10(6) 1/mol, was calculated from the titration curve.