A eletrophoretic tracking dye for RNA gels.Used as a pH indicator.ACS Grade3',3'',5',5''-Tetrabromo-m-cresolsulphonephthaleinRefractive index: n20D 1.72 (Predicted)Visual transition interval: pH 3.8-5.4Absorption: λmax 423 nmAppearance: Yellow Crystalline PowderBoiling Point : ~626.0 °C at 760 (Predicted)Density : ~2.1 g/cm3 (Predicted)HS Code : 29349990IUPAC_Name: 2,6-Dibromo-4-[7-(3,5-dibromo-4-hydroxy-2-methyl-phenyl)- 9,9-dioxo-8-oxa-9_5;6-thiabicyclo[4.3.0]nona- 1,3,5-trien-7-yl]-3-methyl-phenolMelting Point: 225 °CRTECS Number: SJ7456000