Sodium bicarbonate, iyo molecular formula ndeye NAHCO₃, inorganic compound, ine white crystalline powder, isina hwema, munyu, nyore kunyungudika mumvura.Kuora zvishoma nezvishoma mumhepo ine hunyoro kana mhepo inopisa, gadzira kabhoni dhaikisaidhi, uye kupisa kusvika 270 ° C yakaora zvachose.Kana iine acidic, inoora zvakasimba, ichibudisa carbon dioxide.
Sodium bicarbonate inoshandiswa zvakanyanya maererano nekuongorora chemistry, inorganic synthesis, kugadzirwa kwemaindasitiri, kurima nekupfuya mhuka.
Zvinhu zvenyama:sodium bicarbonateikristaro chena, kana makristasi epaque monocliplative makristasi mashoma, asina kunhuwa, ane munyu zvishoma uye anotonhorera, uye anonyungudika nyore mumvura uye glycerin, uye isinganyungudika mu ethanol.Solubility mumvura ndeye 7.8g (18℃), 16.0g (60 ℃), density i 2.20g/cm3, chikamu i2.208, refractive index is α: 1.465;β: 1.498;γ: 1.504, standard entropy 24.4J/(mol · K), gadzira kupisa 229.3kj/mol, yakanyungudutswa kupisa 4.33kj/mol, uye kupfuura kupisa kugona (Cp）20.89J/(mol ·°C)(22°C) .
Chemical properties:
1. Acid uye alkaline
Iyo aqueous solution ye sodium bicarbonate haina simba alkaline nekuda kwehydrolysis: HCO3-+H2O⇌H2CO3+OH-, 0.8% aqueous solution pH kukosha i8.3.
2. React with acid
Sodium bicarbonate inogona kuita neasidhi, yakadai se sodium bicarbonate uye hydrochloride: nahco3 + HCL = NaCl+ CO2 ↑+H2O.
3. Kuita kune alkali
Sodium bicarbonate inogona kuita nealkali.Somuenzaniso, sodium bicarbarbonate uye sodium hydroxide reaction: nahco3 + naOh = Na2CO3 + H2O;uye calcium hydroxide reactions, kana chiyero che sodium bicarbonate yakazara, pane: 2NAHCO3 + CA (OH) 2 = CACO3 ↓ + NA2CO3 + 2H2O;
Kana pane zvishoma sodium bicarbonate, pane: Nahco3+CA (OH) 2 = CACO3 ↓+Naoh+H2O.
4. Kuita kumunyu
A. Sodium bicarbonate inogona kupeta hydrolysis nearuminiyamu chloride nearuminiyamu chloride, uye kugadzira aruminiyamu hydroxide, sodium munyu uye carbon dioxide.
3AHCO3+AlCl3 = Al (OH) 3 ↓+3ACL+3CO2 ↑;3AHCO3+Al (CLO3) 3 = Al (OH) 3 ↓+3AClo3+3CO2 ↑.
B. Sodium bicarbonate inogona kuita nemamwe masimbi emunyu, akadai se: 2HCO3-+Mg2+= CO2 ↑+MgCo3 ↓+H2O.
5. Kuparara nekupisa
Chimiro chesodium bicarbonate yakagadzikana pakupisa, uye iri nyore kuputsika.Inokurumidza kuora pamusoro pe50 ° C. Pa270 ° C, carbon dioxide yakarasika zvachose.Iko hakuna shanduko mumhepo yakaoma uye zvishoma nezvishoma kuora mumhepo ine hunyoro.Decomposition The reaction equation: 2NAHCO3NA2CO3+CO2 ↑+H2O.
Nzvimbo yekushandisa:
1. Kushandiswa kwerabhoritari
Sodium bicarbonateinoshandiswa seanalytical reagents uye inoshandiswawo kune inorganic synthesis.Inogona kushandiswa kugadzira sodium carbonate-sodium bicarbonate buffer mhinduro.Kana uchiwedzera huwandu hushoma hweasidhi kana alkali, inogona kuchengetedza huwandu hwehydrogen ions pasina shanduko huru, iyo inogona kuchengetedza system pH kukosha kwakadzikama.
2. Kushandiswa kwemaindasitiri
Sodium bicarbonate inogona kushandiswa kugadzira pH yekudzimisa moto uye yekudzimisa moto ine furo, uye sodium bicarbonate muindasitiri yerabha inogona kushandiswa kugadzira rabha nechiponji.Sodium bicarbonate muindasitiri yesimbi inogona kushandiswa sechinhu chinonyunguduka chekukanda ingots dzesimbi.Sodium bicarbonate muindasitiri yemakina inogona kushandiswa semubatsiri wekuumba simbi yakakandwa (sandwiches) jecha.Sodium bicarbonate muindasitiri yekudhinda uye yekudhaya inogona kushandiswa seyakagadziriswa ruvara, asidhi -base buffer, uye jira rinodhaya rekare rekurapa mumiririri mukusvibisa kudhinda;kuwedzera soda kudhayi kunogona kudzivirira gauze mu gauze.Kudzivirira.
3. Kushandiswa kwekudya kwekudya
Mukugadzira chikafu, sodium bicarbonate ndiyo inonyanya kushandiswa yakasununguka inoshandiswa kugadzira mabhisikiti nechingwa.Ruvara nderweyero-brown.I carbon dioxide muchinwiwa chesoda;inogona kusanganiswa nealum kune alkaline yakaviriswa poda, kana inogona kuumbwa ne citromes sechiuto alkali ibwe;asiwo semugadziri wekuchengetedza bhotela.Inogona kushandiswa semichero uye miriwo yemavara mumiriri mukugadzira miriwo.Kuwedzera nezve 0.1% kusvika 0.2% ye sodium bicarbonate kana uchigeza michero nemiriwo inogona kudzikamisa girinhi.Kana sodium bicarbonate ichishandiswa semuchero nemiriwo kurapwa, inogona kuwedzera pH kukosha kwemichero nemiriwo nekubika michero nemiriwo, izvo zvinogona kuwedzera pH kukosha kwemichero nemiriwo, kuvandudza kubatwa kwemvura kweprotein, kukurudzira kupfava. yemasero echikafu chenyama, uye nyungudutsa iyo astringent zvikamu.Mukuwedzera, kune mhedzisiro pamukaka wembudzi, nehuwandu hwekushandisa 0.001% ~ 0.002%.
4. Kurima nekupfuya mhuka
Sodium bicarbonateinogona kushandiswa kunyura kwekurima, uye inogona zvakare kugadzirisa kushomeka kwe lysine yemukati muchikafu.Soluble sodium bicarbonate mumvura shoma kana inosanganiswa mu concentrate yekudyisa nyama yemombe (yakakodzera mari) kukurudzira kukura kwemombe.Inogonawo kuwedzera zvakanyanya kugadzirwa kwemukaka kwemombe dzemukaka.
5. Kushandiswa kwekurapa
Sodium bicarbonate inogona kushandiswa seyakabikwa yemishonga, iyo inoshandiswa kurapa yakawandisa gastric acid, metabolic acid poisoning, uye inogona zvakare alkaline weti kudzivirira uric acid matombo.Inogonawo kuderedza huturu hweitsvo yemishonga yesulfa, uye kudzivirira hemoglobin kubva pakuisa mu renal tubular kana acute hemolysis, uye kurapa zviratidzo zvinokonzerwa nekunyanyisa gastric acid;jekiseni remutsinga harina-specific kune drug poisoning The treatment effect.Kuenderera mberi kwemusoro, kurasikirwa kwechido, kusvotwa, kurutsa, nezvimwe.
Chengetedzo uye chekufambisa chinyorwa: Sodium bicarbonate isiri-ine njodzi chigadzirwa, asi inofanirwa kudzivirirwa kubva kunyoro.Chengetedza mune tangi yakaoma yemhepo.Usasanganise neasidhi.Soda inodyiwa haifanirwe kusanganiswa nezvinhu zvine chepfu kudzivirira kusvibiswa.
Kutakura: 25KG / BAG
Nguva yekutumira: Mar-17-2023