Glyoxylic acid/CAS: 298-12-4
Kev Piav Qhia Luv:
Lub Npe Khoom: Glyoxylic acid
CAS: 298-12-4
Hom: ZA-Y
MF:C2H2O3
MW:74.04
QAUV:
Kev piav qhia:
Glyoxylic acid, tseem hu ua formic acid, hydrated acetic acid, lossis oxoacetic acid, nrog rau cov tshuaj formula C2H203, yog cov aldehyde acid yooj yim tshaj plaws uas pom muaj nyob rau hauv cov txiv hmab txiv ntoo tsis tau loj hlob, nplooj ntsuab mos, thiab beets qab zib. Crystallization los ntawm dej yog ib qho monoclinic crystal system (muaj 1/2 crystal water). Qhov hnyav molecular yog 70.04. Melting point 98 ℃. Nws muaj ntxhiab tsw tsis zoo, yog ib qho acid corrosive heev, yooj yim deliquescent, thiab tuaj yeem tsim ib qho nplaum thaum raug rau huab cua. Me ntsis soluble hauv ethanol, ether, thiab benzene, tuaj yeem yaj dawb hauv dej, thiab cov kua dej ruaj khov thiab tsis lwj hauv huab cua. Nws muaj nyob rau hauv daim ntawv ntawm hydration hauv cov kua dej. Tsuas yog stainless hlau, nws tuaj yeem cuam tshuam nrog feem ntau cov hlau. Nws muaj ob qho tib si acidic thiab aldehyde zog. Nws tuaj yeem ntxiv nrog sodium bisulfite lossis hydrocyanic acid, tshuaj tiv thaiv nrog hydroxylamine lossis phenylhydrazine los tsim oxime lossis hydrazone, ua rau muaj kev cuam tshuam iav nyiaj, ua rau muaj kev cuam tshuam Conicoro, thiab tseem tuaj yeem tsim cov ntsev carboxylate thiab esters.
Kev Qhia Tshwj Xeeb:
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Qhov kub yaj | -93°C |
| Kub taw tes | 111 °C |
| Qhov Ceev | 1.33 g/mL ntawm 20 °C |
| Cov ntsuas kev cuam tshuam | n20/Hnub 1.414 |
| Lub zog ua pa | 14hPa ntawm 19.85 ℃ |
| Cia txias. | Khaws cia rau hauv qab +30 ° C. |
| Kev yaj tau | Sib xyaw nrog ethanol. Sib xyaw me ntsis nrog ether thiab benzene. Sib xyaw nrog esters tsis tau. |
| Daim Ntawv | Kua ntshiab |
| Xim | Tsis muaj xim rau lub teeb txiv kab ntxwv rau daj |
| pka | 3.18 (ntawm 25 ℃) |
| PH | 0.3 (19.5°C hauv H2O) |
Kev Siv
Glyoxalic acid siv tau rau hauv kev tsim ntau yam kev tshuaj tiv thaiv.
Glyoxylic acid yog siv rau hauv Hopkins Cole reaction, uas yog siv rau hauv kev kuaj pom ntawm tryptophan hauv cov protein.
Nws reacts nrog phenol kom tau 4-hydroxymandelic acid, uas thaum reacting nrog ammonia ntxiv, nws yuav muab hydroxyphenylglycine, ua ib qho precursor rau amoxicillin.
Nws kuj tseem siv ua cov khoom pib rau kev npaj ntawm 4-hydroxyphenylacetic acid, uas yog siv los ua atenolol.
Ntim Khoom
250KG / Nruas los yog raws li cov neeg siv khoom xav tau.
Khaws cia thiab khaws cia
Lub neej txee: 24 lub hlis txij li hnub tsim khoom hauv cov ntim khoom tsis tau qhib khaws cia rau hauv qhov chaw txias thiab qhuav kom tsis txhob raug tshav ntuj ncaj qha, dej.
Lub tsev rau khoom muaj cua nkag, ziab kom qhuav kub tsawg, Sib cais ntawm cov tshuaj oxidants, cov kua qaub.
