24264
Self - diffusion coefficient measurements were performed for pure n - alkyl ketone liquids using the pulsed field gradient NMR spin - echo technique .
 Chemical: n - alkyl ketone
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: n - alkyl ketone