OXALIC ACIDCAS68603-87-2
cov lus qhia tshwj xeeb
| YAM KHOOM | COV LUS QHIA |
| Qhov tsos | Cov kua dawb pob tshab |
| Qhov kub yaj | 189.5°C (hloov kho) (lit.) |
| Kub taw tes | 337.5℃[ntawm 101 325 Pa] |
| qhov ceev | 0.99 g/mL ntawm 25 °C |
| Qhov ceev ntawm cov pa dej | 4.4 (piv rau huab cua) |
| Lub zog ua pa | ＜0.01mmHg（20℃） |
| Cov coefficient ntawm acidity (pKa) | 4.43[thaum 20℃] |
| Kev yaj dej | 100g/L ntawm 25℃ |
| Kev txwv tsis pub raug tshav ntuj | ACGIH: TWA 1 mg/m3; STEL 2 mg/m3 |
| LogP | 0.162 ntawm 25 ℃ |
| XAUS LUS | COV TXiaj Ntsig Ua Raws Li Cov Qauv Lag Luam |
Kev Siv
Cov tshuaj oxalic acidCov tshuaj txheem yog cov tshuaj oxalic acid nrog qhov paub tseeb tias muaj qhov concentration thiab siv dav hauv cov teb xws li kev tshuaj xyuas tshuaj lom neeg, kev tsim khoom lag luam, thiab kev tshawb fawb. Cov txheej txheem siv tseem ceeb yog raws li nram no:
Kev Tshuaj Xyuas Tshuaj thiab Kev Txiav Txim Siab
- Kev Ntsuas Acid - Base Titration: Oxalic acid yog dibasic weak acid uas tuaj yeem dhau los ntawm kev ua kom tsis muaj zog nrog cov bases. Nws tuaj yeem siv ua cov kua qaub txheem los txiav txim siab qhov concentration ntawm cov kua alkaline tsis paub - concentration. Piv txwv li, thaum titrating cov kua sodium hydroxide nrog cov kua oxalic acid txheem, siv phenolphthalein ua tus qhia, qhov concentration tseeb ntawm cov kua sodium hydroxide tuaj yeem suav raws li kev sib raug zoo stoichiometric thiab qhov ntau ntawm cov kua oxalic acid txheem siv ntawm qhov kawg - qhov chaw ntawm titration.
- Redox Titration: Cov pa roj carbon hauv oxalic acid muaj qhov valence ntawm +3, qhia txog kev txo qis thiab muaj peev xwm cuam tshuam nrog cov tshuaj oxidizing muaj zog hauv cov tshuaj redox. Hauv cov kua qaub, sodium oxalate tuaj yeem raug oxidized los ntawm potassium permanganate. Siv cov tshuaj no, cov tshuaj oxalic acid txheem tuaj yeem siv los ua tus qauv qhov concentration ntawm cov tshuaj potassium permanganate.
Kev Tswj Xyuas Kev Lag Luam Zoo
- Kev Kho Mob Nto Hlau: Hauv cov txheej txheem kho qhov chaw ntawm cov hlau xws li txhuas, cov kua qaub oxalic tuaj yeem siv rau kev txiav thiab ntxuav. Los ntawm kev siv cov kua qaub oxalic acid txheem, qhov concentration ntawm cov kua tuaj yeem tswj tau meej kom ntseeg tau tias muaj kev sib xws thiab ruaj khov ntawm cov nyhuv kho qhov chaw hlau, yog li txhim kho cov khoom zoo. Piv txwv li, los ntawm kev tswj qhov concentration ntawm cov kua qaub oxalic acid txheem hauv ib qho tshwj xeeb, cov khoom txhuas tuaj yeem txiav kom tau txais cov qauv nto zoo nkauj thiab zoo nkauj.
- Kev Lag Luam Electroplating: Cov tshuaj oxalic acid txheem siv tau los kho qhov acidity thiab cov khoom sib xyaw ntawm cov tshuaj electroplating, kom ntseeg tau tias qhov zoo thiab kev ua tau zoo ntawm cov txheej electroplated. Kev tswj hwm qhov concentration ntawm oxalic acid kom raug pab txhim kho qhov lo, gloss, thiab corrosion tsis kam ntawm cov txheej electroplated, kom ntseeg tau tias cov khoom electroplated ua tau raws li cov qauv zoo.
Ntim thiab Xa Khoom
25KG / Nruas los yog raws li cov neeg siv khoom xav tau.
Kev Xa Khoom: 6 hom khoom txaus ntshai thiab tuaj yeem xa los ntawm dej hiav txwv.
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.
