Solution Test(0.1% w/v) : Clear blue solution
Specific Absorbance (E 1%/1cm)(Lambda-max at 244-255nm) : ≥400 (non-U.S. specification)
Specific Absorbance (E 1%/1cm)(Lambda-max at 280-300nm) : ≥800 (non-U.S. specification)
Specific Absorbance (E 1%/1cm)(Lambda-max at 653-665nm) : ≥1500 (non-U.S. specification)
UV spectrophotometry(Lambda-max at 244-255nm) : ≥400 (non-U.S. specification)
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