7651
The polarity and the salt solubility of water domains in the W / O SFME were investigated by UV - visible spectroscopy using methyl orange and potassium ferricyanide as probes , respectively .
 Chemical: methyl orange; Chemical: potassium ferricyanide
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: methyl orange; Chemical: potassium ferricyanide