Sodium hydrosulfite. Jiki da kuma sinadaran Properties. aikace-aikace

Sodium hydrosulfite - shi ne wani inorganic fili, da karfe gishiri da wani acidic sodium da kuma sulfurous acid hana aifuwa na maza (E222) da kuma wani antioxidant. An whitening Properties. Yana yana da wadannan sinadaran dabara: NaHSO3.

Jiki Properties na sodium hydrosulfite:

1. Yana da wani farin foda da ciwon rauni grayish tint.
2. matauni taro na 104.061 g / mol, yawa - 1,48 g / santimetr³.
3. A narkewa batu ya 150 digiri centigrade.
4. Yana da readily mai narkewa a cikin ruwa (H2O) da kuma tsarma alkalis.

A sunadarai Properties na sodium hydroxide:

1. decompose a lokacin tsanani da:

2NaHSO3 (sodium hydrosulfite) = Na2SO3 (sodium sulfite) + SO2 (sulfur dioxide da aka saki a matsayin gas) + H2O (ruwa)

2. bazu acid:

HCI + NaHSO3 (hydrochloric acid) = NaCl (sodium chloride) + SO2 (sulfur dioxide) + H2O (ruwa)

3. bazu alkalis:

NaHSO3 + NaOH (hydroxide) = Na2SO3 (sodium sulfite) + H2O (ruwa)

4. oxidized oxygen:

+ O2 = 4NaHSO3 2Na2SO4 (sodium sulfate) + 2SO2 (sulfur dioxide, evaporates) + H2O (ruwa)

Yadda za a samu sodium hydrosulfite?

wadannan hanyoyin iya zama kafin su sami abu:

1. By dauki na sodium hydroxide da wani oxide da sulfur:
NaOH (sodium tushe) + SO2 (sulfur oxide) = NaHSO3 (sodium hydrosulfite)

2. Inã rantsuwa da dauki (a dakin da zazzabi) na sodium dithionite da ruwa da kuma hydrochloric acid:
2Na2S2O4 (sodium dithionite) + H2O (ruwa) + HCI (hydrochloric acid) = 2NaHSO3 (sodium hydrosulfite) + S (sulfur, precipitate a matsayin) + NaCl (sodium chloride)

3. Ta wajen wani dauki a wadda interacts sodium dithionite, ruwa da oxygen:
2Na2S2O4 (sodium dithionite a diluted form) + 2H2O (ruwa) + O2 (oxygen) = 4NaHSO3 (sodium hydrosulfite)

A amfani da sodium hydrosulfite:

- haske, da sinadaran da sauran masana'antu.

- a masana'antun sarrafa kayayyakin abinci da ake amfani da matsayin antioxidant ko a hana aifuwa na maza.

- yi amfani a kusan dukkanin giya yi nufi ga fitarwa (sinadaran Properties na sodium hydrosulfite a cikin wannan harka taimaka wajen hana hadawan abu da iskar shaka da kuma adana dandano na sha);

- da ake amfani da canning 'ya'yan itatuwa zuwa yãƙi germs da kuma hana browning.

- a dyeing da whitening daban-daban tsokoki da aka yi amfani da matsayin da hana aifuwa na maza.

- don cire amsawa dyes a rini aiwatar da auduga.

- for dyeing polyesters for reductive tsarkakewa.

- kamar yadda na hana aifuwa na maza a cikin bleaching na yadudduka da matsayin rage wakili don mazubi dyes.

- a biochemical Engineering da ake amfani domin ya kula anaerobic yanayi a cikin reactor.

Sodium hydrosulfite ne mai guba da mutane?

muna da dũkiyõyinsu a tambaya a wuce kima yawa iya haifar da tsananin rashin lafiyan halayen. Tare da goma sha tara eightieth shekara NaHSO3 (as potassium bisulfite, E 228) da aka haramta a Amurka don amfani a kan raw 'ya'yan itatuwa da kayan lambu bayan da wani yawan lokuta, mutuwa. sodium hydrosulfite Yanã cututtuka daban-daban na narkewa kamar tsarin. Bisa ga EU da umarnin a kan abubuwa da suke da hadarin gaske ga mutane, E 222 ƙari nasa ne da rukuni na m sunadarai. A Ukraine, da Rasha Federation da abu ne izini don amfani kawai da tsananin kiyaye da fasaha.

A amfani da sodium bisulfate a masana'antun sarrafa kayayyakin abinci

Wannan abu da ake amfani a cikin masana'antun sarrafa kayayyakin abinci da ake kira E 222. Wannan abinci kari roba asalin ciwon wani babban matakin da hadari. A cikin dogon din amfani Yanã tsanani cutar da jiki. Saboda da dukiya ga hana haifuwa da kuma ci gaban da kwayoyin da kwayoyin da amfani a matsayin antioxidant da kuma hana aifuwa na maza. A wani acidic yanayi tare da sodium sulfite decomposes zuwa sulfur-dauke da mahadi da sulfur da kanta.

Taimakon farko ga guba

An shawarar da hutu da kuma ci gaba da dumi, da kuma bushe tsabta tufafi, kazalika da sabo iska. Fata da kuma idanu ya kamata a rinsed da sanyi ruwa. Tare da konewa dora aseptic bandeji. Next, kira motar asibiti.