Glacial acetic acid (GAA), CAS naj npawb 64-19-7, yog cov anhydrous lossis ze-anhydrous daim ntawv ntawm acetic acid. Nws yog cov kua ntshiab, tsis muaj xim nrog lub ntsej muag ntse, khaus khaus thiab muaj zog corrosive zog. Vim tias nws yog soluble hauv dej thiab miscible nrog ntau cov kuab tshuaj organic, glacial acetic acid plays lub luag haujlwm tseem ceeb hauv cov tshuaj tiv thaiv, kev sib cais, thiab kev tsim khoom lag luam. Cov lus qhia no tshuaj xyuas nws cov khoom, cov lus qhia tshwj xeeb, thiab cov lus nug tseem ceeb ntawm seb glacial acetic acid puas yog tshuaj lom.
Physicochemical Properties ntawm Glacial Acetic Acid
Glacial acetic acid yog qhov txawv ntawm nws lub peev xwm los ua ob qho tib si hnyav thiab cov kua qaub reactive. Nws cov polarity siab tso cai rau nws kom yaj ntau yam ntawm cov organic thiab inorganic, nrog rau ntau cov ntaub ntawv uas tsis zoo soluble hauv dej. Nws muaj qhov nruab nrab volatility, uas txhais tau hais tias nws tuaj yeem raug tshem tawm ntawm cov tshuaj tiv thaiv kab mob yam tsis muaj cov khoom sib kis, tab sis nws tsis evaporate sai heev uas nws tsim teeb meem kev ua haujlwm. Piv nrog rau ntau cov kuab tshuaj lom thiab muaj kev phom sij, glacial acetic acid muaj cov kab mob toxicity thiab biodegradability zoo dua, uas txhawb nqa nws siv hauv kev tsim khoom ib puag ncig.
| Khoom | Tus nqi |
|---|---|
| Fusing point | 16.6 C |
| Boiling point | 117.9 C |
| Qhov ntom | 1.05g / cm3 |
| Flash point | 39 C (lub khob kaw) |
| Refractive Index | 1.371 ntawm 20 C |
| Saturated vapor siab | 1.52 kPa ntawm 20 C |
| Qhov ntsuas kub tseem ceeb | 321.6 C |
| Critical siab | 5.78 MPa rau |
| Nws pib - qhov kub thiab txias | 426 C |
| Kev tawg txwv hauv huab cua | 5.4% mus rau 16.0% los ntawm ntim |
Puas yog Glacial Acetic Acid Toxic?
Cov lus teb nyob ntawm qhov concentration thiab txoj kev raug. Ntawm qhov tsis tshua muaj siab pom hauv vinegar thiab lwm yam khoom noj khoom haus, acetic acid tsis muaj teeb meem rau kev noj ib txwm. Txawm li cas los xij, nyob rau ntawm qhov siab siab tau ntsib hauv cov chaw soj nstuam thiab cov chaw tsim khoom, txawm li cas los xij, glacial acetic acid yog ib qho ua rau lub qhov muag, tawv nqaij, thiab cov mucous membranes. Ntev ntev los yog rov ua dua ntawm daim tawv nqaij nrog cov concentrated acetic acid tuaj yeem ua rau cov ntaub so ntswg puas thiab cov tshuaj kub hnyiab, thaum nqus tau nws cov vapors tuaj yeem ua rau mob ua pa. Kev noj cov concentrated glacial acetic acid yog kev kho mob xwm txheej ceev thiab tuaj yeem ua rau raug mob loj. Cov kev phom sij no tau cuam tshuam los ntawm cov txheej txheem kev faib tawm uas xaiv cov tshuaj acetic acid ua cov tshuaj tiv thaiv kab mob, thiab kev txwv kev ua haujlwm raug siv hauv chaw ua haujlwm.
Qhov zoo ntawm Glacial Acetic Acid ua cov khoom hnyav
Glacial acetic acid muaj ntau qhov zoo ntawm kev siv hauv kev lag luam. Nws cov kev daws teeb meem zoo ua rau kev npaj txheej txheej, inks, adhesives, thiab ntau lwm yam khoom tsim. Nws qhov nruab nrab volatility txhawb kev tshem tawm ntawm cov tshuaj tiv thaiv sib tov, txo qhov kev pheej hmoo ntawm cov khoom sib kis. Nws qhov kev sib piv qis dua thiab zoo dua biodegradability ua rau nws muaj kev xaiv ib puag ncig zoo dua li ntau cov tshuaj chlorinated los yog cov kuab tshuaj tsw qab. Cov khoom no piav qhia vim li cas glacial acetic acid tseem yog cov kuab tshuaj tseem ceeb hauv kev tsim tshuaj lom neeg, kev ua textile, thiab kev ua haujlwm hauv chav kuaj.
Kev Tswj Xyuas Kev Nyab Xeeb thiab Kev Cia Siab
Vim tias glacial acetic acid yog corrosive thiab flammable, kev nyab xeeb tuav yuav tsum tau tswj kom tsim nyog. Ib txwm ua haujlwm hauv qhov dej - qhov chaw cua lossis hauv qab lub hood fume, thiab hnav cov tshuaj lom neeg- hnab looj tes tiv thaiv, tsom iav, thiab khaub ncaws tiv thaiv. Khaws cov thawv kaw kom nruj thiab khaws cov kua qaub kom deb ntawm cov oxidizers, cov hauv paus muaj zog, thiab qhov hluav taws kub. Txij li thaum nws lub teeb nyem yog 39 C, tsis txhob qhib nplaim taws thiab qhov chaw kub nyob ze ntawm cov thawv qhib. Nyob rau hauv rooj plaub ntawm daim tawv nqaij los yog qhov muag, yaug qhov chaw cuam tshuam nrog dej kom ntau thiab nrhiav kev kho mob, thiab ua raws li cov lus qhia hauv daim ntawv qhia kev nyab xeeb rau kev tiv thaiv kev nchuav thiab kev pab thawj zaug.
Specifications rau Industrial thiab Laboratory Siv
Glacial acetic acid muaj nyob rau hauv cov qib uas ua tau raws li kev lag luam thiab kev kuaj xyuas. Cov ntsiab lus tseem ceeb muaj xws li purity, fusing point, boiling point, ntom, thiab dej cov ntsiab lus. Cov neeg yuav khoom yuav tsum tau thov daim ntawv pov thawj ntawm kev tshuaj xyuas thiab xyuas kom meej tias cov qib xa khoom zoo sib xws rau daim ntawv thov, txawm tias rau kev sib txuas, kev rho tawm, hloov pH, lossis kev ua cov polymer. Cov qauv xws li GB / T thiab ISO kev taw qhia rau acetic acid tuaj yeem raug xa mus rau kev lees paub zoo, thiab kev ua raws li kev thauj mus los thiab cov kev cai tshuaj lom neeg yuav tsum raug lees paub ua ntej xa khoom.
Cov lus nug nquag
Puas yog glacial acetic acid tib yam li cov kua qaub li niaj zaus?
Tsis yog. Vinegar yog ib qho tshuaj dilute aqueous uas muaj kwv yees li 4 mus rau 8 feem pua acetic acid, thaum glacial acetic acid yog qhov tseem ceeb ntshiab acetic acid uas muaj cov kab dej xwb, ua rau nws nyob deb dua corrosive thiab txaus ntshai.
Kuv yuav ua li cas yog tias glacial acetic acid kov kuv daim tawv nqaij?
Tam sim ntawd tshem tawm cov khaub ncaws tsis huv thiab yaug cov tawv nqaij uas muaj dej ntau rau tsawg kawg 15 feeb, tom qab ntawd nrhiav kev kho mob, vim tias cov tshuaj acetic acid muaj zog tuaj yeem ua rau muaj tshuaj lom.
glacial acetic acid vapors puas tuaj yeem ua rau muaj teeb meem kev noj qab haus huv?
Yog lawm. Kev nqus pa ntawm cov kua qaub uas muaj acetic acid tuaj yeem ua rau lub qhov ntswg, caj pas, thiab lub ntsws, thiab cov pa ntau dhau tuaj yeem ua rau hnoos, mob hauv siab, thiab thaum mob hnyav, mob ntsws ntsws.
Vim li cas glacial acetic acid hu ua glacial?
Lub sij hawm glacial yog hais txog qhov tseeb hais tias cov ntshiab acetic acid solidifies rau hauv dej khov -zoo li cov muaju ntawm kwv yees li 16.6 C, zoo dua li cov chav tsev kub hauv qhov chaw txias.
Puas yog glacial acetic acid flammable?
Glacial acetic acid yog cov kua hluav taws xob uas muaj qhov taw tes ntawm 39 C hauv lub khob kaw, yog li nws tuaj yeem ignite thaum raug rau qhov hluav taws kub, thiab nws cov vapors tsim tawg sib xyaw nrog huab cua ntawm li 5.4% thiab 16.0% los ntawm ntim.
Cov qib dab tsi ntawm glacial acetic acid feem ntau muab?
Glacial acetic acid feem ntau muab nkag rau hauv kev lag luam, khoom noj khoom haus, thiab cov qib kuaj nrog txawv purity thiab impurity specifications; qib zaub mov ua tau raws li cov qauv kev sib txuas ntxiv, thaum qib kuaj pom zoo rau kev soj ntsuam thiab kev sib txuas ua haujlwm.
