Figure 2From: Application of alizarin colorimetric measurements for quantification of amine extraction by model food simulants from epoxy polymer Amounts of residual amine extracted from cured epoxy resin with water (◇), 95% ethanol (◯), 10% ethanol (△) and 3% acetic acid (☐). The determinations performed using calibration with 527 nm absorbance for pellets after 24 hours of curing (white)and pellets after six months in room temperature (grey).Back to article page