| | Identification | Back Directory |  | [Name] 
 Tetrabromophenol Blue sodium salt
 |  | [CAS] 
 108321-10-4
 |  | [Synonyms] 
 TETRABROMOPHENOL BLUE SODIUM SALT
 Tetrabromophenol Blue, water soluble
 Tetrabromophenol Blue Amonosodium Salt
 3,3′,3′′,4,5,5′,5′′,6-Octabromophenolsulfonphthalein sodium salt
 3,3',3'',4,5,5',5'',6-Octabromophenolsulfonephthaleinesodiumsalt
 3,3',3'',4,5,5',5'',6-OCTA-BROMOPHENOLSULFONEPHTHALEIN SODIUM SALT
 Tetrabromophenol Blue sodium salt,3,3′,3′′,4,5,5′,5′′,6-Octabromophenolsulfonephthalein sodium salt
 Phenol, 4,4′-(4,5,6,7-tetrabromo-3h-2,1-benzoxathiol-3-ylidene)-bis[2,6-dibromo-,s,s-dioxide, Monosodium Salt
 2,3,4,5-tetrabromo-6-[(3,5-dibromo-4-hydroxyphenyl)-(3,5-dibromo-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate
 |  | [Molecular Formula] 
 C19H7Br8NaO5S
 |  | [MDL Number] 
 MFCD00064343
 |  | [MOL File] 
 108321-10-4.mol
 |  | [Molecular Weight] 
 1009.54
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 >250°C
 |  | [storage temp. ] 
 room temp
 |  | [solubility ] 
 Solubility Soluble in water, ethanol
 |  | [form ] 
 crystals
 |  | [pka] 
 5.69(at 25℃)
 |  | [color ] 
 Dark brown
 |  | [PH Range] 
 Yellow (3.0) to blue (4.6)
 |  | [ε(extinction coefficient)] 
 ≥12000  at 298-304nm in H2O  at 0.005g/L
 ≥55000  at 607-613nm in H2O  at 0.005g/L
 ≥59000  at 222-228nm in H2O  at 0.005g/L
 |  | [λmax] 
 610nm
 |  | [Major Application] 
 chemically amplified resists
 |  | [InChI] 
 InChI=1S/C19H6Br8O5S.Na.H/c20-7-1-5(2-8(21)16(7)28)19(6-3-9(22)17(29)10(23)4-6)11-12(24)13(25)14(26)15(27)18(11)33(30,31)32-19;;/h1-4,28-29H;;
 |  | [InChIKey] 
 GFMOPDHPAXHAQX-UHFFFAOYSA-M
 |  | [SMILES] 
 BrC1=C(C(Br)=C(Br)C2S(=O)(=O)OC(C3C=C(Br)C(O)=C(Br)C=3)(C3C=C(Br)C(O)=C(Br)C=3)C1=2)Br.[NaH]
 | 
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