Paraformaldehyde (PFA) is the smallest polyoxymethylene. It is polymerization product of formaldehyde. Paraformaldehyde has been used in the past for disinfecting sickrooms, clothing, linen and sickroom utensils. It has been used as a fumigant and in manufacturing synthetic resins & as a…

Polyvinylpyrrolidone K 30 is used as thickeners, dispersing agents, detoxicant, complexing agent, lubricants and binders. Polyvinylpyrrolidone is a component of Denhardt′s Solution.