7341
Solutions of 0 . 2 - 0 . 3 mM CoSO ( 4 ) at pH 6 . 0 and 10 . 6 ( air - saturated and Ar - purged ) were irradiated at an absorbed dose rate of 5 . 5 kGy h ( - 1 ) .
 Chemical: CoSO ( 4 )
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: CoSO ( 4 )