9.PHYSICAL AND CHEMICAL PROPERTIES Appearance and Colour White flake Smell Odorless PH(5%aqueous solution ) 5-7 Unsaturatio

Test Items	Standard	Results	Test Method
Appearance	White Flake	—	—
PH(5%aqueous solution )	5-7	6.92	GB/368-93
Unsaturation ≥	0.390	0.395	QB/KLH-20
Hydroxyl       (mgKOH/g)	21-26	23.30	GB/T 384-96
PEG contents(%)≤	2	2	liquid chromatogram
Retention Rate (%)	95	95	liquid chromatogram

polycarboxylate water reducer