concentration - 200mM in water
wavelength 525 nm
Try to google it, You will find many papers and articles
regards
http://pubs.acs.org/doi/abs/10.1021/jp065156l?mobileUi=0&journalCode=jpcbfk
https://www.google.iq/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&uact=8&ved=0ahUKEwjd4Lv-zOPTAhXnKMAKHWUiCpAQFgg5MAQ&url=https%3A%2F%2Fepub.uni-regensburg.de%2F4015%2F1%2Fubr03517_ocr.pdf&usg=AFQjCNHk85YLblibc9qvnjcHpqb865Yfbg&sig2=YSSimCCyRDtwS1M71g-nPA
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