Figure 4From: Facile spectrophotometric assay of molar equivalents of N-hydroxysuccinimide esters of monomethoxyl poly-(ethylene glycol) derivatives Effects of reaction temperatures on reaction rates of TNBS with ethanolamine. Except the differences in reaction temperatures, other conditions were the same. Final level of ethanolamine to react with TNBS was 100 μmol/L. At indicated time, reaction mixtures were withdrawn to measure absorbance at 420 nm.Back to article page