Optical brightener ER-I/ER-I L (OBA 199)   
   
C.I.: 199   
CAS No.: 13001-40-6   
Appearance: Slight yellow greenish powder   
Purity: 99%   
Melting Point: 230-232℃  217-225 
Usage: A good whitening agent for polyester fiber and as the raw material of    
paste form brightening agent in textile dyeing.   
Package: 25KG fiber drums with PE liner.   
Counter of Blankophor ER(BAY)