Which conditions can lead to polymerization of formaldehyde?

Polymerization of formaldehyde can indeed occur under extreme temperature conditions. When formaldehyde is exposed to high temperatures, it can facilitate the process whereby formaldehyde molecules link together to form larger molecules called polymers. This reaction is often accelerated by heat, which provides the necessary energy for the chemical bonds to form.

In the context of formaldehyde, maintaining a stable environment is critical for its effectiveness as a preservative and disinfectant in the mortuary science field. Extreme temperatures can not only cause polymerization but can also lead to changes in the physical and chemical properties of formaldehyde solutions, making them less effective for their intended uses.

While other conditions, such as humidity and pH, can affect formaldehyde's reactivity, they do not specifically lead to polymerization in the same way that temperature does. Therefore, extreme temperature is a key factor that can directly promote the polymerization of formaldehyde.