22831
Stable colloidal particles ( < 350nm ) containing drug , polyvinylpyrrolidone ( PVP ) K12 and sodium dodecyl sulfate ( SDS ) in 1 : 2 . 75 : 0 . 25 ratio were produced after 2h of co - grinding .
 Chemical: polyvinylpyrrolidone; Chemical: ( PVP ) K12; Chemical: sodium dodecyl sulfate; Chemical: SDS
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: polyvinylpyrrolidone; Chemical: ( PVP ) K12; Chemical: sodium dodecyl sulfate; Chemical: SDS