Xov xwm

1, Restore hardened phuam Cov phuam yuav harden tom qab ib tug ntev lub sij hawm, uas yog tshwm sim los ntawm nag lossis daus ntawm cov dej nyuaj. Boil lub xab npum ntxuav nrog ...

Caustic soda (sodium hydroxide) yog lub hauv paus muaj zog soluble. Soda (sodium carbonate) tiag tiag yog ntsev. Vim tias nws yog hydrolyzed hauv dej los ua cov tshuaj alkaline,...

Cov xab npum muaj ntau yam kev siv. Nws yog dav siv hauv kev lag luam textile dua li cov khaub ncaws uas paub txog kev ntxhua khaub ncaws. Feem ntau, cov roj ntsha siab tshaj pl...

Raws li cov ntaub ntawv keeb kwm, cov tshuaj xab npum ntxov tshaj plaws tshwm sim hauv Mesopotamia hauv Western Asia (lub ntsiab lus" nruab nrab ntawm ob tus dej ntws", nruab nr...

Caustic soda tseem hu ua sodium hydroxide Sodium hydroxide (NaOH) yog siv dav. Nws yog siv los tsim cov ntawv, xab npum, dyestuff, rayon, smelting hlau, roj av refining, paj rwb...

1, siv cov dej qab zib tsawg tsawg, 35% zoo li, hmoov qhuav, ib yam li lub rooj sib tham. Qhov concentration ntawm caustic soda yog corrosive rau ntawm daim tawv nqaij, tab sis ...

Txhawm rau ua kom cov hmoov ntxhua khaub ncaws zoo dua thiab ntxuav ntau dua - cuam tshuam txog, ntau thiab ntau cov tshuaj detergents muaj cov khoom siv tshwj xeeb, uas tuaj ye...

Nyob rau hauv niaj hnub civilized lub neej, cov neeg hnav khaub ncaws, siv ntaub pua chaw pw, txaj linen, phuam da dej, rooj zaum, curtains thiab thiaj li nyob rau hauv ntaub nr...

Concentrated ntxuav hmoov feem ntau los ntawm cov ntsiab lus siab ntawm surfactants ua cov haujlwm tseem ceeb thiab nrog dej qab zib tshauv, silicate, anti-sedimentation tus nee...