One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 233
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Fill-in-the-blank: Among the dispersants added in polymerization reactions, polyvinyl alcohol with a hydrolysis degree of 88% has a ( ) appearance; it is non-toxic and odorless, and its relative density is ( ). Answer: Colorless or light yellow ； 1.21-1.31 ；
Colorless to pale yellow, 1.21-1.31
Among the dispersants added in the polymerization reaction, polyvinyl alcohol with a hydrolysis degree of 88% appears as colorless to light yellow; it is non-toxic and odorless, with a relative density of (1.21–1.31).
Polyvinyl alcohol with a hydrolysis degree of 88% appears as a colorless or pale yellow substance; it is non-toxic and odorless, with a relative density of (1.21~1.31).
Colorless to light yellow； 1.21-1.31
Among the dispersants added in the polymerization reaction, polyvinyl alcohol with a hydrolysis degree of 88% appears as a colorless to light yellow substance; it is non-toxic and odorless, with a relative density of (1.21–1.31).
Among the dispersants added in the polymerization reaction, polyvinyl alcohol with a hydrolysis degree of 88% appears as colorless to light yellow; it is non-toxic and odorless, with a relative density of (1.21–1.31).
Among the dispersants added in the polymerization reaction, polyvinyl alcohol with a hydrolysis degree of 88% appears as a colorless to light yellow substance; it is non-toxic and odorless, with a relative density of (1.21–1.31).
Among the dispersants added in the polymerization reaction, polyvinyl alcohol with a hydrolysis degree of 88% appears as a colorless to light yellow substance; it is non-toxic and odorless, with a relative density of (1.21–1.31).
Among the dispersants added in the polymerization reaction, polyvinyl alcohol with a hydrolysis degree of 88% appears as colorless to light yellow; it is non-toxic and odorless, with a relative density of (1.21–1.31).