| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | paraformaldehyde | chemistry industry | Used as a solid-state form of formaldehyde for various industrial applications. | 1 |
| 2 | paraformaldehyde | chemistry industry | Paraformaldehyde is a common chemical used as a polymerization agent and disinfectant in the chemistry industry. | 1 |