"FORMULA C20 H10 NA2 O5; DESCRIPTION: BROWNISH-RED TO ORANGE-RED POWDER; IDENTIFICATION: PASS TEST; A SAMPLE SOLUTION SHOULD BE STRONGLY FLUORESCENT, EVEN IN EXTREME DILUTION; THE FLUORESCENCE DISAPPEARS WHEN THE SOLUTION IS MADE ACIDIC, AND REAPPEARS WHEN AGAIN MADE ALKALINE; COLOR: PINK; SHADE DESIGNATION: DAYLIGHT-FLUORESCENT OR DARK; PHYSICAL FORM: DRY; DO NOT SUBSTITUTE THIS CHEMICAL WITH ANY OTHER FORM OR PURITY; ONLY USE FISHER SCIENTIFIC WORLDWIDE AS THE SOURCE FOR PURCHASE WITH PART NUMBER A833-100"