CPC Subgroup
C01B 17/34 Polysulfides of sodium or potassium
Full Title
Sulfur; Compounds thereof > Alkali metal sulfides or polysulfides > Polysulfides of sodium or potassium
C01B 17/34 Sulfur; Compounds thereof > Alkali metal sulfides or polysulfides > Polysulfides of sodium or potassium