Oxalic Acid

Oxalic Acidyog ib hom tshuaj organic. Cov tshuaj ua haujlwm yog h₂c₂o₄. Nws yog cov khoom lag luam metabolic ntawm cov tsiaj muaj sia. Nws yog ob-feem tsis muaj kua qaub tsis muaj zog. Nws yog dav faib hauv cov nroj tsuag, tsiaj, thiab fungal lub cev. Nws ua ntau yam ua haujlwm hauv cov kab muaj sia. Yog li ntawd, oxalic acid feem ntau yog ib qho kev tawm tsam rau qhov nqus thiab siv cov ntxhia cov ntsiab lus. Nws anhydride yog carbon trioxide.

Cov yam ntxwv:Daim ntawv tsis muaj kob monoclinatic lossis cov hmoov pismatic lossis hmoov dawb, oxalic acid tsis muaj tshuaj los ntawm synthesis. Sublimation ntawm 150 ~ 160 ℃. Nws tuaj yeem tiv thaiv huab cua kub qhuav. 1g yog soluble hauv 7ml dej, 2ml boiling dej, 2.5ml ethanol, 100ml glycerin, thiab insoluble nyob rau hauv benzene, chloroform thiab petroleum ether. 0.1mol / l tov muaj pH ntawm 1.3. Tus txheeb ze ntom (dej = 1) yog 1.653. Melting taw tes 189.5 ℃.

Tshuaj lom neeg cov khoom:Oxalic acid, tseem hu ua glycolic acid, yog dav pom hauv cov zaub mov cog. Oxalic acid yog lub crystal tsis muaj siv lead ua, soluble hauv dej ntau dua li hauv organic cov kuab tshuaj xws li ether,

Oxalate muaj kev sib haum xeeb ua kom muaj zog thiab yog lwm yam ntawm cov hlau chelating tus neeg sawv cev hauv cov khoom noj cog. Thaum oxalic acid yog ib co alkaline lub ntiaj teb hlau ntsiab, nws solubility yog txo qis, xws li calcium oxalate yog yuav luag tsis muaj Insoluble hauv dej. Yog li ntawd, muaj cov oxalic acid muaj cov nyhuv zoo ntawm cov xyoob xyoob ntoo ntawm cov zaub mov tseem ceeb; Thaum oxalic acid yog sib txuas nrog qee cov kev hloov cov hlau, soluble complexes tau tsim los ntawm kev ua kom sib haum ntawm oxaliles acid, yog cov solubility zoo heev.

Oxalic acid tau rau sublimate ntawm 100 ℃, nrawm sublimated ntawm 125 ℃, thiab cov subbimated ntawm 157 ℃, thiab pib txi.

Muaj peev xwm hnov ​​mob nrog alkali, tuaj yeem tsim cov khoom siv Esterification, Acyl Halogenation, tab sis kev cuam tshuam. Txo cov kev tawm tsam kuj tseem tuaj yeem tshwm sim, thiab decarboxylation tshua muaj tshwm sim nyob rau hauv tshav kub. Anhydrous oxalic acid yog hygroscopic. Oxalic acid cilt dej-soluble complexes nrog ntau yam hlau.

Cov Oxalate Oxalate:1, sodium oxalate; 2, potassium oxalate; 3, oxalate; 4, ferrous oxalate; 5, Albume Oxalate; 6, ammonium hydrogen oxalate; 7, magnesium oxalate 8, lithium oxalate.

Daim Ntawv Thov:

1. Cov neeg sawv cev sib tw, tus neeg sawv cev ua ntsej muag, tus neeg sawv cev nag lossis tus neeg sawv cev. Nws yog siv rau kev txiav txim siab beryllium, calcium, chromium, kub, mangium, thorium, thorium thiab lwm yam hlau ions. Picocrystal tsom xam rau sodium thiab lwm yam khoom. Precipalition calcium, magnesium, thorium thiab tsis tshua muaj ntiaj teb hais. Cov qauv daws teeb meem rau kev ntsuas hluav taws xob ntawm poov tshuaj permanganate thiab muaj kev daws teeb meem sulfate. Tshuaj dawb. Zas xim. Nws kuj tseem tuaj yeem siv los tshem tawm cov xeb ntawm cov khaub ncaws hauv lub tsev kev lag luam ua ntej yuav tsum ua ntej txhuam phab ntsa oxali acid alkali.

2. Kev lag luam kws tshuaj siv hauv kev tsim cov aomomcin, oxytetraccline, Streptomycin, Borneol, vitamin B12, phenobarbital thiab lwm yam tshuaj. Luam Ntawv thiab Dyeing Kev Lag Luam siv raws li cov xim pab, kom dawb, kev kho mob. Plastics kev lag luam rau kev tsim cov PVC, amino plastics, urea - formaldehyde plastics.

3. Siv ua catalyst rau phenolic resin synthesis, cov txheej txheem catalytic yog qhov sib zog me, thiab lub sijhawm ntev tshaj plaws. Acetone Oxalate daws tau cating cov tshuaj tiv thaiv ntawm epoxy cob qhia thiab lub sijhawm kho kom luv. Kuj tseem siv los ua hluavtaws ureace formaldehyde cob, melamine forticredehyde resin pH regulator. Nws kuj tseem tuaj yeem ntxiv rau hauv polyvinyl forticdehyde dej-soluble nplaum kom txhim kho qhov ziab nrawm nrawm nrawm nrawm nrawm. Kuj tseem siv raws li urea formaldehyde resin kho tus neeg sawv cev, hlau ion chelating tus neeg sawv cev. Nws tuaj yeem raug siv los ua kev npaj cov tshis cov hmoov txhuv nplej siab nrog kmno4 oxidant kom nrawm rau cov oxidation tus nqi thiab luv luv lub sij hawm.

Raws li tus neeg sawv cev tshuaj dawb:

Oxalic acid yog tsuas yog siv los ua kom txo cov neeg sawv cev thiab tshuaj dawb, siv rau cov tshuaj tiv thaiv tsawg, zas xim txo tus neeg sawv cev, tanning tus neeg sawv cev, thiab lwm yam.

Oxalic acid kuj tseem siv tau hauv kev tsim cov cobalt-molybdenum-aluminium catalysts, ntxuav ntawm cov hlau thiab moj bleing, thiab tshuaj dawb ntawm textiles.

Siv rau cov hlau nto tu thiab kho, tsis tshua muaj ntiaj teb cov extraction, textile luam ntawv thiab zas, tawv ua, thiab lwm yam.

Xws li tus neeg sawv cev txo qis:

Hauv cov organic synthesis kev lag luam feem ntau yog siv nyob rau hauv kev tsim cov hydroquinone, pentaquatherol, npib oxalate, gallic acid thiab lwm yam khoom siv tshuaj lom.

Plastics kev lag luam rau kev tsim tawm ntawm pvc, amino plastics, urea - formaldehyde plastics, pleev xim, thiab lwm yam.

Dow kev lag luam yog siv los tsim cov pib ntsuab thiab lwm yam.

Luam Ntawv thiab Dyeing kev lag luam tuaj yeem hloov acetic acid, siv ua xim xim xim cov xim pab, tshuaj dawb.

Kws kev lag luam rau kev tsim cov auritomycin, tetracycline, streptomycin, epelrine.

Ib qho ntxiv, oxalic acid kuj tseem siv tau rau hauv cov hluavtaws ntawm ntau yam oxalate thiab oxalamide cov khoom, socium oxalate, socium oxalate thiab lwm yam khoom yog cov khoom lag luam tshaj plaws.

Cia Txoj Kev:

1. Kaw rau hauv qhov chaw qhuav thiab txias. Ncov noo noo-pov thawj, dej-pov thawj thiab hnub ua pov thawj. Cia kub yuav tsum tsis pub tshaj 40 ℃.

2. Txav deb ntawm cov tshuaj oxides thiab alkaline. Siv polypropylene woven hnab hlua nrog hnab yas, 25kg / hnab.

Zuag qhia tag nrho, oxalic acid yog cov tshuaj ntau ntau nrog ntau daim ntawv thov hauv ntau yam kev lag luam. Nws cov khoom ua rau nws xaiv qhov zoo tshaj plaws, ua kom dawb huv thiab tshuaj dawb, thiab nws muaj ob peb daim ntawv thov hauv cov ntawv nyeem, ua teb thiab kev lag luam hlau. Txawm li cas los xij, ceev faj kev nyab xeeb yuav tsum tau ua thaum siv cov tshuaj no, vim nws muaj tshuaj lom thiab tuaj yeem tsim kev puas tsuaj yog tias tsis daws tau.