Kev daws teeb meem Sodium Bicarbonate: Ib txoj hauv kev mus rau Sodium Hydrosulfide
2025-08-15
Tsis muaj dej sodium hydrosulfide
Npaj raws li tau piav qhia saum toj no nyob rau hauv cov xwm txheej tsis muaj dej noo.
Cov kua NaHS uas muaj dej
Sodium sulfide nonahydrate (Na₂S·9H₂O) yog yaj rau hauv dej tshiab distilled los ua ib qho 13% (w/v) Na₂S kua.
Hauv qab sib xyaw thiab hauv qab sib xyaw 20°C, 14 g NaHCO₃ yog ntxiv rau 100 mL ntawm cov kua no, ua rau muaj kev yaj tam sim ntawd thiab kev ua kom sov.
Tom qab ntawd ntxiv 100 mL methanol (khaws qhov kub kom tsawg dua 20°C), ua rau cov Na₂CO₃ siv lead ua ke.
Tom qab 10 feeb, cov khoom sib tov raug lim, thiab cov seem raug ntxuav nrog 50 mL methanol.
Cov lim dej muaj ≥9 g NaHS thiab ≤0.6 g Na₂CO₃ (~3.5 g NaHS thiab 0.2 g Na₂CO₃ ib 100 mL).