27459
MTNa , at pH ~ 7 . 54 , formed small micelles at low concentrations that transformed to long worm - like micelles for concentrations >= 0 . 05 M , accompanied by a 30 - fold increase in solution viscosity .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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