Mutengesi weSodium Metabisulfite muSouth Africa

Chii chinonzi Sodium Metabisulfite?

Sodium metabisulfite (Na₂S₂O₅), inozivikanwawo sesodium pyrosulfite, ipfu chena yekristaro inova sodium bisulfite isina mvura, inoburitsa sulfur dioxide kana paine mvura kana acid. Nehuwandu hweSO₂ hwe≥64%, imushonga weSO₂ wakasimba uye wakasimba unoshandiswa semushonga unochengetedza, antioxidant, bleaching agent, uye reduction agent muindasitiri yechikafu, zvinwiwa, mishonga, mishonga, uye migodhi. Yakanyoreswa sechikafu chinowedzera E223 uye ndeimwe yemakemikari esulfite anoshandiswa zvakanyanya pasi rose.

Indasitiri yeChikafu, Chinwiwa & Waini

Mukugadzira chikafu, sodium metabisulfite inochengetedza michero yakaomeswa, miriwo, uye muto kubva pakusviba uye kuora kwehutachiona. Mukugadzira, inowedzerwa ku wort kudzivirira oxidation. Mukugadzira waini, inonyungudutswa kuti igadzire sulfiti yekuchenesa mabara uye kugadzikana kwewaini pakati pekuvirisa. Mukugadzira hove dzegungwa, inodzivirira mavara matema (melanosis) muma prawns nema crustaceans panguva yekuchengetwa nekugoverwa. Miganhu yemutemo pane zviri mukati meSO₂ inosiyana zvichienderana nechikamu chechikafu uye kutonga; Terracore inopa zvitupa zvekuongorora kuti zvibatsire kutevedzera mitemo.

Kurapa Mvura & Kuchera Migodhi

Sodium metabisulfite inoshandiswa kubvisa chlorine mumvura yekunwa uye kubvisa tsvina, ichikurumidza kusangana nechlorine yakasara uye pasina kuunza zvinhu zvinokuvadza. Mukuchera, chinhu chakakosha chinodzvinyirira flotation chinoshandiswa mukudonha kwesimbi inokosha uye base metal sulfide ores, uko inowedzerwa kuflotation circuit kuti ideredze pyrite ne arsenopyrite uku ichiyangarara goridhe rine zvicherwa. Inoshandiswawo mukubvisa cyanide mutsvina yegoridhe (kuderedza CN⁻ muInco SO₂/Air process).

Mumiriri weKuderedza Mishonga neMaindasitiri

Sodium metabisulfite inoshandiswa mumishonga inoshandiswa se antioxidant uye preservative mujekiseni, mishonga inogadzirwa pamusoro, uye mvura inonwiwa kudzivirira kuora kwe oxidative kwezvinhu zvinoshanda. Mumakemikari eindasitiri inoderedza marara e chromate kubva pa electroplating kuenda ku trivalent chromium (Cr³⁺) kuti mvura inyure uye iraswe zvakanaka. Inoshandiswawo mukutora mifananidzo se preservative, mu rabha vulcanisation, mu textile printing discharge pastes, uye mu paper pulp bleaching.