812
Self - nanoemulsifying capacity of Cremophor RH 40 , Cremophor EL , Tween 20 , Tween 60 , Tween 80 and Labrasol were tested for the selected oil .
 Chemical: Tween 20; Chemical: Tween 60; Chemical: Tween 80
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: Tween 20; Chemical: Tween 60; Chemical: Tween 80