May 16, 2023
      
                  
        
  Author(s)
  Ashlee  Aiello,   John  Hoffman,   Anthony  Kotula,   Lucas  Flagg,   Ruipeng  Li,   Jeremiah  Woodcock
 
       
            
    
    
        Spontaneous room temperature crystallization of 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]) was observed upon removal of trace water. To ensure that this observation was not produced by trace water or other contaminants, sample purity was confirmed