What Is Paraformaldehyde?
Paraformaldehyde is the solid form of liquid formaldehyde. Classified as a thermoplastic, this chemical compound exhibits the typical characteristics of similar polymers with long-chain polyoxymethylene glycols, namely the ability to turn to liquid when exposed to heat and solidify upon cooling or being frozen to a hard, glass-like material. In fact, this substance can be melted and cooled repeatedly and still retain these properties.
