AQUEOUS SOLUTION OF FORMALDEHYDE ABSORBENT

摘要

PURPOSE:To obtain a formaldehyde absorbent having strong absorbing capacity of formaldehyde released from woodwork and exerting no adverse effect on a human body or the woodwork after use, by using an aqueous solution containing sodium sulfite and ammonium salt. CONSTITUTION:Sodium sulfite and ammonium salt such as ammonium chloride or ammonium phosphate are dissolved in water to obtain an aqueous formaline absorbent solution. This aqueous solution is applied to the front and back surfaces of a woodwork such as plywood prepared using a formalin type resin. Formaldehyde released from the woodwork is rapidly reacted with the absorbent and caustic soda generated during reaction is rapidly reacted with acid generated from the ammonium salt to be formed into a neutral salt.