Sodium bicarbonate, chilinganizo cha mamolekyu ndi NAHCO₃, ndi pawiri, ndi ufa woyera wa crystalline, wopanda fungo, wamchere, wosavuta kusungunuka m'madzi.Kuwola pang'onopang'ono mu mpweya wonyowa kapena mpweya wotentha, kupanga mpweya woipa, ndi kutentha mpaka 270 ° C kusungunuka kwathunthu.Ikakhala acidic, imawola mwamphamvu, kutulutsa mpweya woipa.
Sodium bicarbonate imagwiritsidwa ntchito kwambiri pofufuza chemistry, kaphatikizidwe kazinthu, kupanga mafakitale, ulimi ndi ulimi wa ziweto.
Zakuthupi:sodium bicarbonatendi kristalo woyera, kapena opaque monocliplative makhiristo ndi pang'ono makhiristo, amene si fungo, pang'ono mchere ndi ozizira, ndipo mosavuta sungunuka m'madzi ndi glycerin, ndi insoluble mu Mowa.Kusungunuka m'madzi ndi 7.8g (18 ℃), 16.0g (60 ℃), kachulukidwe ndi 2.20g/cm3, gawo ndi 2.208, refractive index ndi α: 1.465;β: 1.498;γ: 1.504, muyezo entropy 24.4J/(mol · K), kupanga kutentha 229.3kj/mol, kusungunuka kutentha 4.33kj/mol, ndi kuposa kutentha mphamvu (Cp）20.89J/(mol · °C) (22°C) .
Chemical katundu:
1. Acid ndi zamchere
Njira yamadzimadzi ya sodium bicarbonate imakhala yofooka yamchere chifukwa cha hydrolysis: HCO3-+H2O⇌H2CO3+OH-, 0.8% yamadzimadzi pH mtengo ndi 8.3.
2. Kuchita ndi asidi
Sodium bicarbonate imatha kuchitapo kanthu ndi asidi, monga sodium bicarbonate ndi hydrochloride: nahco3+HCL = NaCl+CO2 ↑+H2O.
3. Kuchita kwa alkali
Sodium bicarbonate imatha kuchitapo kanthu ndi alkali.Mwachitsanzo, sodium bicarbonate ndi sodium hydroxide reaction: nahco3 + naOh = Na2CO3 + H2O;ndi calcium hydroxide reactions, ngati kuchuluka kwa sodium bicarbonate ya sodium kuli kokwanira, pali: 2NAHCO3 + CA (OH) 2 = CACO3 ↓+NA2CO3+2H2O;
Ngati pali sodium bicarbonate pang'ono, pali: Nahco3+CA (OH) 2 = CACO3 ↓+Naoh+H2O.
4. Kuchitapo mchere
A. Sodium bicarbonate imatha kuwirikiza hydrolysis ndi aluminiyamu kolorayidi ndi aluminiyamu kolorayidi, ndikupanga aluminium hydroxide, mchere wa sodium ndi carbon dioxide.
3AHCO3+AlCl3 = Al (OH) 3 ↓+3ACL+3CO2 ↑;3AHCO3+Al (CLO3) 3 = Al (OH) 3 ↓+3AClo3+3CO2 ↑.
B. Sodium bicarbonate imatha kuchitapo kanthu ndi njira zina zamchere zamchere, monga: 2HCO3-+Mg2+= CO2 ↑+MgCo3 ↓+H2O.
5. Kuwonongeka ndi kutentha
Chikhalidwe cha sodium bicarbonate chimakhala chokhazikika pa kutentha, ndipo n'chosavuta kusweka.Imawonongeka msanga pamwamba pa 50 ° C. Pa 270 ° C, mpweya woipa umatayika.Palibe kusintha mu mpweya wouma ndi kuwola pang'onopang'ono mu mpweya chinyezi.Kuwola Zomwe anachita: 2NAHCO3NA2CO3+CO2 ↑+H2O.
Munda wa ntchito:
1. Kugwiritsa ntchito labotale
Sodium bicarbonateimagwiritsidwa ntchito ngati ma analytical reagents ndipo imagwiritsidwanso ntchito popanga ma inorganic synthesis.Itha kugwiritsidwa ntchito pokonzekera njira yothetsera sodium carbonate-sodium bicarbonate buffer.Powonjezerapo pang'ono asidi kapena zamchere, zimatha kusunga ma ayoni a haidrojeni popanda kusintha kwakukulu, zomwe zimatha kusunga dongosolo la pH kukhala lokhazikika.
2. Kugwiritsa ntchito mafakitale
Sodium bicarbonate angagwiritsidwe ntchito kupanga pH zozimitsira moto ndi zozimitsira thovu thovu, ndi sodium bicarbonate mu makampani mphira angagwiritsidwe ntchito kupanga mphira ndi siponji.Sodium bicarbonate m'makampani opanga zitsulo angagwiritsidwe ntchito ngati chosungunulira poponya ma ingots achitsulo.Sodium bicarbonate mu makampani makina angagwiritsidwe ntchito ngati akamaumba wothandizira kuponyedwa zitsulo (sangweji) mchenga.Sodium bicarbonate mu makampani osindikizira ndi utoto angagwiritsidwe ntchito ngati wothandizila mtundu kukonza, asidi -m'munsi chotchinga, ndi nsalu utoto wothandizila kumbuyo mankhwala mu kudetsa kusindikiza;kuwonjezera soda ku utoto kungalepheretse gauze mu yopyapyala.Kupewa.
3. Kugwiritsa ntchito pokonza chakudya
Pokonza chakudya, sodium bicarbonate ndiye chinthu chotayirira chomwe chimagwiritsidwa ntchito kwambiri popanga masikono ndi mkate.Mtundu ndi wachikasu - bulauni.Ndi carbon dioxide mu chakumwa cha soda;ikhoza kuphatikizidwa ndi alum kupita ku ufa wothira wamchere, kapena ikhoza kupangidwa ndi citromes ngati alkali yamwala wamba;komanso ngati wothandizira kusunga batala.Itha kugwiritsidwa ntchito ngati chopangira utoto wa zipatso ndi masamba pokonza masamba.Kuonjezera 0.1% mpaka 0.2% ya sodium bicarbonate potsuka zipatso ndi ndiwo zamasamba zimatha kukhazikika zobiriwira.Pamene sodium bicarbonate imagwiritsidwa ntchito ngati mankhwala a zipatso ndi masamba, imatha kuonjezera pH mtengo wa zipatso ndi ndiwo zamasamba pophika zipatso ndi ndiwo zamasamba, zomwe zimatha kuonjezera pH mtengo wa zipatso ndi ndiwo zamasamba, kusintha madzi okhala ndi mapuloteni, kulimbikitsa kufewetsa. wa maselo a minofu chakudya, ndi kusungunula astringent zigawo zikuluzikulu.Komanso, pali zotsatira pa mkaka wa mbuzi, ndi kuchuluka kwa ntchito 0.001% ~ 0.002%.
4. Ulimi ndi kuweta ziweto
Sodium bicarbonateitha kugwiritsidwa ntchito pakunyowetsa zaulimi, ndipo imathanso kupanga kusowa kwa lysine m'zakudya.Soluble sodium bicarbonate mu madzi pang'ono kapena zosakaniza mu tcheru kudyetsa ng'ombe (moyenera kuchuluka) kulimbikitsa kukula kwa ng'ombe.Zingathenso kuwonjezera kwambiri kupanga mkaka wa ng'ombe za mkaka.
5. Kugwiritsa ntchito mankhwala
Sodium bicarbonate ingagwiritsidwe ntchito ngati mankhwala opangira mankhwala, omwe amagwiritsidwa ntchito pochiza asidi wambiri wa m'mimba, poizoni wa metabolic acid, komanso akhoza kukhala ndi mkodzo wamchere kuteteza miyala ya uric acid.Komanso akhoza kuchepetsa impso kawopsedwe sulfa mankhwala, ndi kuteteza hemoglobin kuchoka mu aimpso tubular pamene pachimake hemolysis, ndi kuchiza zizindikiro chifukwa kwambiri chapamimba asidi;jakisoni mtsempha si yeniyeni mankhwala poyizoni Zotsatira za mankhwala.Kupweteka kwa mutu kosalekeza, kusowa kwa njala, nseru, kusanza, etc.
Zosungirako ndi zoyendera: Sodium bicarbonate ndi chinthu chosawopsa, koma chiyenera kupewedwa ku chinyezi.Sungani mu thanki youma mpweya wabwino.Osasakaniza ndi asidi.Soda wophika sayenera kusakanizidwa ndi zinthu zapoizoni kuti apewe kuipitsa.
Kunyamula: 25KG / BAG
Nthawi yotumiza: Mar-17-2023