| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | phosphorus trichloride | laboratory settings | Used as a reagent in chemical reactions and synthesis processes | 1 |
| 2 | phosphorus trichloride | laboratory settings | Used as a reagent in chemical reactions and synthesis | 1 |
| 3 | phosphorus trichloride | laboratory settings | Used as a reagent for making organophosphorus compounds and as a chlorinating agent in chemical reactions. | 1 |