28749
So simple : The in situ synthesis of an aryldiazonium salt and an azo - aryldiazonium salt by azo coupling from sulfanilic acid and aniline is reported .
 Chemical: aryldiazonium salt; Chemical: azo - aryldiazonium salt; Chemical: azo; Chemical: sulfanilic acid; Chemical: aniline
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: aryldiazonium salt; Chemical: azo - aryldiazonium salt; Chemical: azo; Chemical: sulfanilic acid; Chemical: aniline