The physical and chemical properties of paraformaldehyde are introduced by the equipment manufacturer.

Polyformaldehyde (CH2O) n, also called solid formaldehyde, formaldehyde polymer, the polymerization degree n of low molecular weight formaldehyde is about 8-12, the solubility is 80, there is a strong odor of formaldehyde, the degree of polymerization degree n is more than 12 of solubility is 120-170, insoluble in ethanol, propanol and ether, soluble in dilute acid and dilute alkali solution. Some mechanical properties of the plastic can not be made into thin films, which can be used as disinfectants, bactericides, and resin and artificial ivory, and can be obtained by polymerization of pure formaldehyde under the alkaline condition (such as HaOH).

Paraformaldehyde is made from dehydration and drying of formaldehyde. It is produced in two steps: first, it is heated under negative pressure to remove 37% of the formaldehyde first, and the concentrated aldehyde of 65%-70% is polymerized under the condition of alkaline catalysis and then dried and obtained. It is worth clarifying that the boiling point should be reduced in order to reduce the loss of aldehyde.

The above is the knowledge of paraformaldehyde equipment manufacturer's introduction to the characteristics of paraformaldehyde.