Hydrolysis

Initial emittable concentration (C0), diffusion coefficient (Dm) and partition coefficient (K) are the three key emission parameters determining formaldehyde emissions from “dry” building materials. Previous studies of humidity effect on formaldehyde emissions were mainly focused on the analysis of steady-state emission rates or concentrations, whereas humidity effects on emission parameters were seldom discussed.

Recently, products of chemical reaction have been at issue as the topic of research on Indoor AirQuality. In this study, the emission mechanism of 2-ethyl-1-hexanol (2E1H) is studied. It has beenreported that 2E1H at high concentrations is measured in indoor air over the long term. The emissionmechanism for 2E1H is considered that water with high pH in concrete slabs and self-leveling sub-floormaterial reacts to di-2-ethylhexyl phthalate (DEHP) in PVC flooring and compounds containing the2-ethyl-1-hexyl group in the adhesive.