硫 is a Japanese kanji written with 12 strokes, listed here under the keyword “sulfur”. It is built from 㐬 (lifebelt) and 石 (stone). In Remembering the Kanji by James W. Heisig it is frame 825.
On KumiJi Glyph Explorer, open the parts search and type “lifebelt” + “stone”. 硫 is among the results, together with every other character containing the same shapes.
Open 硫 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.