CPC Subgroup
C01D 1/34 with selective solvents
Full Title
Oxides or hydroxides of sodium, potassium or alkali metals in general > Hydroxides > Purification; Separation > with selective solvents
C01D 1/34 Oxides or hydroxides of sodium, potassium or alkali metals in general > Hydroxides > Purification; Separation > with selective solvents