Purification of White phosphorus

Dissolve 3 mL of sulfuric acid and 2 g of potassium dichromate in 50 mL of 60°C water, then put the impure white phosphorus to it and mechanically stir few times and leave the mixture to stand for 2 days in a dark room with occasional stirring. Discard the solution and wash the WP with water. Then add 50 mL of 30% nitric acid and stir the mixture in 60°C for 6h, then remove magnetic stir bar and cool down to room temperature, wash with water few times and store underwater in dark.

Source

Capture

The impure product

wpchromicaftermath

Chromic acid solution

wpaftermathchromic2

After washing of the chromic acid

7657007668_4fa8cd3b4c

Then purification with nitric acid

purestwp

Very pure White phosphorus

Scroll to top