Paraformaldehyde (PFA) is the smallest poloxymethylene, the polymerization product of formaldehyde with a typical degree of polymerization of 8–100 units.
- Manufacturing of resins for plastics (e.g. moulding powders) and for the wood industry
- Manufacturing of paints, vamishes, coatings, dyes and other specialty chemicals
- As a bactericide and fungicide