15798
The optimal SA concentrations and volume ratios of chloroform to methanol are 0 . 8 mg / mL and 3 : 1 for particles of 140 nm , 0 . 50 mg / mL and 4 : 1 for particles of 300 nm , and 0 . 05 mg / mL and 5 : 1 for particles of 550 nm , respectively .
 Chemical: chloroform; Chemical: methanol
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: chloroform; Chemical: methanol