Sodium Hydrosulfide Production nikadhu kud i NaOH Absorption

2025-08-14

Yore macon mi mako NaOH

Ka NaHS sodium hydrosulfide concentration utuc 70%, etimo dihydrate flakes.

I rwom ma piny, etiye calu trihydrate ma pii.

Kura mi lubo:

A 1 L three-necked round-bottom flask utiye ku stirrer man reflux condenser (ma juketho i CaCl₂ drying tube).

Flask ne juyike ku nitrogen ma muthwo, man juyike ku 200 mL (3.4 mol) anhydrous ethanol.

12 g (0.522 mol) pa sodium maleng jumedo i dul ma nok ithe cinge man judwoko wange nitundo ma epodho.

Ju ketho pii ma wok kud i pii, man H2S ma muthwo (ma muthwo iwi P2O5) jubolo i 5-10 bubbles/sec pi 2 h ithe cing.

I ngei ngico, 750 mL anhydrous ether jumedo pi nyayu NaHS sodium hydrosulfide zo.

Tic:

Jam rubu ne juyike pio pio (coarse frit) mi juku pii kud umo.

Piny ma tek ju lwoko 3× ku anhydrous ether, man juyike i vacuum desiccator (CaCl₂) pi sawa madwong.

Adwogi: 29.4 g pa ≥98% NaHS maleng.