3,3'-Diaminobenzidine CAS 10000-10-0

Selenium reagent yog hu ua DAB luv luv, thiab nws lub npe scientific yog3,3'-Diaminobenzidine. Nws tsim cov qia daj nrog Se (W) hauv acidic nruab nrab. DAB yog ib hom alkali, uas darkens sai heev nyob rau hauv cov huab cua. Nws hydrochloride yog ib rab koob dawb, soluble hauv dej, thiab nws cov tshuaj aqueous ntawm hydrochloride tuaj yeem siv los ua cov xim tsim. 3,3 '- diamino Benzidine (DAB) yog dav siv hauv chemistry, biochemistry, cov ntaub ntawv thiab lwm yam kev tshawb fawb. Tam sim no, nyob rau hauv cov teb chaws uas tsim aerospace thiab tub rog industries, DAB tau pib tsom rau kev tshawb fawb thiab yog siv raws li ib tug monomer rau kev npaj ntawm high-qib polymer cov ntaub ntawv, feem ntau yog rau cov synthesis ntawm tshav kub-resistant polymer resins thiab hluavtaws fiber, tab sis nws daim ntawv thov raws li tus neeg sawv cev chromogenic nyob rau hauv thaj tsam ntawm Analytical chemistry tsuas yog pom nyob rau hauv kev txiav txim photometric ntawm selenium.

3,3'-Diaminobenzidine(DAB) yog dav siv hauv chemistry, biochemistry, cov ntaub ntawv thiab lwm yam kev tshawb fawb. Cov piv txwv ntawm daim ntawv thov yog raws li nram no:

1. Siv los txheeb xyuas cov ntsiab lus ntawm diacetyl hauv cov zaub mov.

Lub 3,3 '- diamino Benzidine tau siv ua ke ua ntej derivatization reagent rau qhov tseeb ntawm cov ntsiab lus diacetyl hauv cov qauv, thiab kev txiav txim siab ntawm cov ntsiab lus diacetyl hauv cov zaub mov (tshwj xeeb yog cov qauv cawv) los ntawm HPLC tau muab. Lub hauv paus ntsiab lus tshawb nrhiav yog raws li nram no:

Cov kauj ruam kev siv tshwj xeeb yog raws li hauv qab no:

(1) Ntxiv 0.2-1.0mL ntawm 1-5mM 3,3 '- diamino Benzidine (DAB) aqueous solution into 1.8-6. 0mL ntawm cov qauv yuav tsum tau kuaj, sib tov zoo thiab hnov ​​​​mob rau 15-30min ntawm 25-50 degree ;

(2) Qauv nrog ua tiav cov tshuaj tiv thaiv ntawm 0.22 μ M membrane filtration, filtrate kuaj pom los ntawm HPLC. 3, 3 '- diamino Benzidine yog siv los ua derivatization reagent los kuaj diacetyl, thiab cov tshuaj tiv thaiv tuaj yeem ua tiav hauv 5-10 min ntawm chav tsev kub, uas yog pH tsawg dua. Piv nrog rau derivatization reagent tau tshaj tawm yav dhau los, nws muaj qhov zoo ntawm kev ua haujlwm yooj yim thiab ceev.

2. Kev txiav txim ncaj qha ntawm selenium hauv cov khoom siv antimony siv selenium reagent spectrophotometric.

Lub hauv paus ntsiab lus ntawm quantitatively sublimating selenium thaum roasting ntawm 750-800 degree C thiab ntes nws los ntawm sodium carbonate magnesium oxide ncaj qha tshem tawm matrix cuam tshuam xws li antimony. Tom qab hloov Se (VI) rau hauv Se (IV) nrog hydrochloric acid, cov xim yog txiav txim ncaj qha. Cov txheej txheem yog yooj yim rau kev khiav lag luam thiab muaj tsawg kawg nkaus ib puag ncig muaj kuab paug. Tom qab kuaj xyuas cov qauv, cov txiaj ntsig kev txiav txim siab txaus siab. Txoj kev no siv tau rau cov khoom lag luam antimony nrog cov selenium loj feem ntawm 0 001 feem pua ​​~ 0 1 feem pua ​​kev txiav txim.

3. Synthesis ntawm poly 2,2 '-5,5' - Benzimidazole thiab poly 2,5' - Benzimidazole.

Txoj kev suav nrog cov kauj ruam hauv qab no:

(1) Polycondensation yog nqa tawm nrog polyphosphoric acid (PPA) (chemically ntshiab, cov ntsiab lus: P2O5 Ntau tshaj los yog sib npaug rau 80.0wt feem pua) raws li cov kuab tshuaj, ib co ntawm cov saum toj no PPA yog ntxiv rau ib tug Qee qhov ntim ntawm Round-hauv qab lub raj mis, nyob rau hauv kev tiv thaiv ntawm nitrogen (ntws tus nqi: 40-50mL / min), rhuab, nplawm thiab rhuab mus rau 140 degree, maj mam ntxiv ib qho nyiaj ntawm 3,3 ' - diamino Benzidine ( DAB · 4HCl · 2H2O, 97wt feem pua), Dissolve 3, 3 '- diamino Benzidine nyob rau hauv PPA thiab volatilize HCl roj uas muaj nyob rau hauv tag nrho, maj mam ntxiv Isophthalic acid ( tshuaj ntshiab, ntau dua los yog sib npaug rau 99wt feem pua ​​) nyob rau hauv tus nqi ntawm lwm yam tshuaj;

(2) Tom qab ua tiav stirring thiab sib tov, hloov cov kua sib tov mus rau lub qhov cub microwave. Ua ntej, qhov ntsuas kub rau 170 degree rau 0-60 feeb ntawm cov tshuaj tiv thaiv, thiab tom qab ntawd ua haujlwm kub rau 200 degree rau 40-160 feeb ntawm cov tshuaj tiv thaiv, nrog lub zog microwave ntawm 300-500W;

(3) Ncuav cov tshuaj tiv thaiv rau hauv dej deionized thaum nws kub, cia nws sawv ntsug rau 10-15 teev, ntxuav nws nrog dej kom txog thaum nws nyob ze rau nruab nrab, thiab ntxiv cov tshuaj sodium bicarbonate saturated rau neutralization;

(4) Nqus plua plav, dej ntxuav ntau zaus (n Ntau dua lossis sib npaug rau 3), anhydrous ethanol (analytical ntshiab, cov ntsiab lus: CH3CH2OH Ntau dua lossis sib npaug li 99.7wt feem pua) ntxuav ntau zaus (n Ntau dua lossis sib npaug rau 3) ;

(5) Qhuav ntawm 100-140 degree rau 24-36 teev;

(6) Sib tov rau hauv hmoov, npaj rau siv.

4. Npaj ib tug qeeb-tso flue gas denitrification tus neeg sawv cev.

Nrog 3,3 '- diamino Benzidine, 3, 4-diaminobenzoic acid thiab Isophthalic acid li precursors, polyphosphoric acid raws li hnyav, nyob rau hauv ultraviolet lub teeb irradiation, polyphenylimidazole copolymer yog synthesized nyob rau hauv qis kub catalysis, thiab ces urea tau coated, tshwj xeeb suav nrog cov kauj ruam hauv qab no:

1) Sib tov thiab yaj 3,3'-diamino Benzidine, 3, 4-diaminobenzoic acid thiab Isophthalic acid nyob rau hauv polyphosphoric acid hnyav nyob rau hauv kev tiv thaiv ntawm nitrogen, maj mam cua sov mus rau 120 degree, tswj qhov kub thiab txias rau 24 teev, thiab ces txias rau chav sov;

2) Dissolve urea thiab Sodium dodecylbenzenesulfonate hauv dej, thiab tom qab ntawd ntxiv cov tshuaj hauv 1) poob los ntawm kev poob nrog ib lub koob txhaj tshuaj, thaum bubbling thiab nplawm nrog nitrogen;

3) Lim thiab ziab cov khoom uas tau txais hauv 2) ntawm qhov kub thiab txias kom tau txais cov tshuaj tua hluav taws xob qeeb qeeb.

3,3'-Diaminobenzidine(DAB) yog ib qho tseem ceeb staining reagent siv dav hauv kev sim biochemical thiab histological. Cov hauv qab no yog txoj hauv kev yooj yim synthesis ntawm DAB thiab sib npaug tshuaj sib npaug:

1. Kev npaj cov khoom siv raw:

- Phenol (los yog hydroquinone)

- Sodium hydroxide (NaOH)

- Hydrogen peroxide (H₂O₂)

2. Synthesis cov kauj ruam:

(1) Dissolve quinone nyob rau hauv ib qho tsim nyog tus nqi ntawm cov kuab tshuaj thiab ntxiv ib tug tsim nyog tus nqi ntawm cov tshuaj NaOH.

(2) Ntxiv hydrogen peroxide rau cov kev daws teeb meem thiab hnov ​​​​mob rau ob peb teev mus rau ob peb hnub, ua kom kub qis dua 40 degree C.

(3) Tom qab cov tshuaj tiv thaiv tiav lawm, kev sib cais-kua yog ua los ntawm kev pom lossis lwm txoj hauv kev.

(4) Cov khoom yog ntxuav thiab qhuav kom tau DAB.

3. Chemical Equation:

Cov kauj ruam tseem ceeb uas cuam tshuam rau cov tshuaj tiv thaiv tshuaj muaj xws li hauv qab no:

(1) 2C₆H₆O₂ntxiv 2NaOH → 3,3 '- Diphenylmethane dioxide ntxiv 2H₂O

(2) 3,3 '- Diphenylmethane dioxide ntxiv rau H₂O₂ → C₁₂H₁₄N₄

Cim npe nrov: 3,3'-diaminobenzidine cas 91-95-2, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom