1565
Dilute KMnO ( 4 ) solutions ( 1 - 100 mg / L ) are used as a topical antiseptics and astringents , but > 1 : 5000 ( 200 mg / L ) dilutions can irritate or discolor sensitive mucous membranes and direct skin or ocular contact with concentrated KMnO ( 4 ) can perforate tissues .
 Chemical: KMnO ( 4 ); Chemical: KMnO ( 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: KMnO ( 4 ); Chemical: KMnO ( 4 )