Sodium metabisulfite yog ntau yam thiab dav siv tshuaj lom neeg nrog ntau yam kev siv thoob plaws kev lag luam sib txawv. Cov tshuaj no, tseem hu ua sodium pyrosulfite, yog dawb, crystalline hmoov uas yog soluble hauv dej. Nws cov tshuaj formula yog Na2S2O5, thiab nws yog feem ntau siv los ua ib tug ...
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