Sodium Formate

Sodium formateyog hmoov dawb los yog crystalline uas nqus tau dej, nrog rau me ntsis tsw ntawm formic acid. Yaj hauv dej thiab glycerin, yaj me ntsis hauv ethanol, yaj tsis tau hauv ether. Lom. Siv tau rau hauv kev tsim cov formic acid, oxalic acid, formamide thiab hmoov pov hwm, kev lag luam tawv, chrome tannery camouflage acid, siv rau hauv cov catalysts.

Cov Khoom:Sodium formate yog hmoov dawb crystalline, me ntsis hygroscopic, me ntsis formic acid tsw, soluble hauv dej, me ntsis soluble hauv ethanol, insoluble hauv ether, qhov hnyav tshwj xeeb 1.919, melting point 253 ℃, delix hauv huab cua, tshuaj lom neeg ruaj khov.

Cov ntawv thov tseem ceeb:

Siv rau hauv kev lag luam tawv, cov kev siv tseem ceeb yog raws li nram no:

(1) Feem ntau siv rau hauv kev tsim cov tshuaj formic acid, oxalic acid thiab hmoov pov hwm, tab sis kuj siv rau hauv kev tsim cov dimethylformamide, thiab lwm yam. Kuj siv rau hauv kev lag luam tshuaj, luam ntawv thiab zas xim. ;

(2) cov tshuaj reagents, cov tshuaj tua kab mob thiab cov mordant rau kev txiav txim siab ntawm phosphorus thiab arsenic;

(3) Siv ua ib qho tshuaj preservative.for alkyd resin coating, plasticizer, muaj zog;

(4) Siv ua cov khoom tawg, cov khoom siv tiv taus kua qaub, roj av roj av, cov khoom siv nplaum.

Sodium formate thiabCalcium formate:

Sodium formate thiab calcium formate yog ob hom ntsev hlau ntawm formate. Sodium formate kuj tseem hu ua sodium formate. Muaj ob hom molecular ntawm sodium formate compounds hauv xwm:

① Anhydrous sodium formate yog hmoov dawb crystalline, me ntsis hygroscopic, lom. Qhov ceev ntawm qhov sib piv yog 1.92 (20 ℃) ​​thiab qhov melting point yog 253 ℃. Yaj hauv dej, me ntsis soluble hauv ethanol, insoluble hauv ether.

② Sodium dihydrate yog siv lead ua tsis muaj xim. Muaj ntxhiab tsw me ntsis ntawm formic acid, lom. Yaj hauv dej thiab glycerin, yaj me ntsis hauv ethanol. Thaum kub siab, nws tawg ua hydrogen thiab sodium oxalate, thiab thaum kawg ua sodium carbonate. Nws yog tsim los ntawm kev sib cuam tshuam ntawm formic acid nrog sodium hydroxide.

Cov kev siv tseem ceeb ntawm sodium formate yog raws li nram no:

Sodium formate siv tau ua cov tshuaj reagent tshuaj, siv rau kev txiav txim siab ntawm arsenic thiab phosphorus cov ntsiab lus, tab sis kuj siv ua tshuaj tua kab mob, mordant, thiab lwm yam. Hauv kev lag luam, hmoov sodium formate siv los hloov formic acid los txhim kho kev ua haujlwm ntawm limestone FGD system.

Txoj kev npaj ntawm sodium formate:Sodium bicarbonate siv hauv chav kuaj kom ua rau cov tshuaj formic acid ua haujlwm kom cov tshuaj alkaline, tshem tawm Fe3 +, lim, ntxiv formic acid rau hauv cov lim dej, ua kom cov tshuaj tsis muaj zog acidic, ua kom qhuav thiab crystallize kom tau txais cov qauv sodium nyoos.

Calcium formate yog ib qho hmoov dawb crystalline uas ntws dawb nrog cov tshuaj tiv thaiv pwm, tiv thaiv xeb thiab tiv thaiv kab mob. Nws yog cov organic acid pub additive. Cov ntsiab lus ntawm 99%, 69% formic acid, 31% calcium, cov dej tsawg. Cov khoom no muaj qhov kub siab melting thiab tsis yooj yim rau kev puas tsuaj hauv cov khoom granular. Ntxiv 0.9% ~ 1.5% rau hauv pub. Cov khoom no cais cov formic acid hauv plab, txo cov pH ntawm lub plab, tswj cov acidity ntawm txoj hnyuv, thiab tiv thaiv kev loj hlob ntawm cov kab mob pathogenic, yog li tswj thiab tiv thaiv qhov tshwm sim ntawm raws plab cuam tshuam nrog kev kis kab mob. Trace formic acid tuaj yeem ua kom muaj zog ntawm pepsinogen thiab txhim kho kev nqus ntawm cov khoom xyaw nquag hauv pub. Chelate nrog cov zaub mov hauv pub los txhawb kev zom thiab kev nqus ntawm cov zaub mov; Nws kuj tseem siv tau ua cov calcium ntxiv. Nws tuaj yeem tiv thaiv raws plab thiab txhim kho tus nqi ciaj sia ntawm cov menyuam npua. Txhawb kev hloov pauv pub thiab nce txhua hnub.

Ntim, khaws cia thiab thauj mus los:Cov ntim khoom kaw hauv cov thoob hlau uas muaj zaj duab xis yas, khaws cia rau qhov chaw txias, qhuav, thiab muaj cua nkag tau zoo, tsis txhob muab tshav ntuj ncaj qha, deb ntawm cov chaw kub, kua qaub, dej, thiab cua noo.

Xaus lus, sodium formate yog ib qho tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam. Nws yog siv rau hauv kev tsim ntau yam tshuaj tsim nyog, suav nrog formic acid, oxalic acid, formamide, thiab dimethylformamide, thiab kuj siv rau hauv kev lag luam tawv. Nws txoj kev phooj ywg ib puag ncig, kev ruaj khov, thiab kev hloov pauv tau ua rau nws yog qhov kev xaiv zoo tshaj plaws hauv ntau daim ntawv thov. Yog li ntawd, nws yog ib qho tshuaj tsim nyog tshawb nrhiav los ntawm cov lag luam uas tuaj yeem tau txais txiaj ntsig zoo tshaj plaws los ntawm nws cov khoom.