Xov xwm

Daim Ntawv Ceeb Toom Hnub So Hnub Tsib Xyoo 2022

Daim ntawv ceeb toom txog hnub ua haujlwm hnub so npaj rau xyoo 2022

Lub Tuam Txhab tuav Lub Peb Hlis Lub Rooj Sib Tham Zoo Siab

Thaum lub Plaub Hlis, lub Peb Hlis Ntuj Kev Zoo Siab tau teeb tsa los ntawm cov neeg ua haujlwm department.

Cov tshuaj reagent yuav los ntawm Fab Kis Cov Neeg Siv Khoom tau raug xa tawm.

Cov tshuaj reagent xaj los ntawm Fabkis cov neeg siv khoom tau raug xa tuaj.

Kev tswj hwm zoo ntawm cov qauv thiab cov khoom ntawm Hybrid Perovskites nyob...

Tus neeg sau xov xwm tau kawm los ntawm University of Science thiab Technology ntawm Tuam Tshoj tias pab pawg tshawb fawb ntawm xibfwb Zeng Jie thiab Associate Professor Zhou Shiming ntawm Hefei Na...

Qhov xwm txheej tam sim no Ntawm Cov Tshuaj Siv Tshuaj Intermediates

Tam sim no, kuv lub teb chaws xav tau ntau dua 2,000 cov khoom siv raw thiab cov khoom nruab nrab rau kev lag luam tshuaj txhua xyoo, thiab qhov kev thov ntau dua 2.5 lab tons. Tom qab ntau tshaj 3...

Physical And Chemical Properties Of Phenacetin

Dawb ci iab scaly siv lead ua los yog dawb crystalline hmoov. Lub melting point yog 137-138 ° C, thiab lub refractive index yog 1.571. Hardly soluble nyob rau hauv dej, me ntsis soluble nyob rau ha...

Daim ntawv thov ntawm N-Tris (Hydroxymethyl) Methylglycine

N-Tris (hydroxymethyl) methylglycine, Tricine luv luv, yog ib qho zwitterionic tsis siv nyob rau hauv biochemistry thiab molecular biology. Qhov pH tsis nyob ntawm Tricine yog 7.4-8.8. Nws yog tsua...

Taw qhia rau Kev Siv Polyethyleneimine

Polyethyleneimine yog dej-soluble polymer. Cov kua tsis muaj xim lossis lub teeb daj daj, hygroscopic, soluble hauv dej, ethanol, thiab insoluble hauv benzene. Cov dej concentration ntawm cov khoom...

Cov Qauv Txheej Txheem Ntawm Polyethyleneimine

Cov khoom lag luam feem ntau yog 20% ​​txog 50% aqueous daws. Lub degree ntawm polymerization siv nyob rau hauv daim ntawv kev lag luam yog hais txog 100, thiab nws cov aqueous tov yog zoo.

Daim Ntawv Thov Ntawm Tshuaj Reagent Distillation Thiab Rectification

Distillation thiab rectification yog tsuas yog siv rau cov kua los yog tshuaj reagents uas yuav tsum tau rhuab los ua kua, tshwj xeeb tshaj yog rau cov purification ntawm organic chemical reagents.

Distillation Principple of Chemical Reagents

Lub hom phiaj tseem ceeb ntawm distillation yog cais cov volatile thiab semi-volatile impurities los ntawm cov tshuaj reagents uas muaj impurities los yog kom evaporate volatile thiab semi-volatile...

Kev Nyab Xeeb Kev Siv Tshuaj Reagents

Feem ntau, cov tshuaj reagents nrog lub teeb nyem hauv qab 25 ° C tau teev tseg raws li cov tshuaj tua hluav taws kub. Feem ntau ntawm lawv yog cov kua dej tsis haum thiab tuaj yeem hlawv thaum rau...