Hydroxyethyl cellulose (HEC) waa huruud cad ama khafiif ah, aan ur lahayn, aan sun ahayn fayraska ama budada adag, oo laga sameeyay suuf cayriin ah ama saxarka la safeeyey oo lagu qooyay 30% alkali dareere ah, la soo baxay oo la riixay nus saac ka dib, tuuji ilaa saamiga. biyaha alkalineku waxay gaadhaan 1:2.8, ka dibna burburi. Waa diyaar...
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