Tetrabromophenol blue, Sigma-Aldrich®
Supplier: SIGMA-ALDRICH MICROSCOPY
Synonyms:
4,5,6,7-Tetrabromo-3,3-bis(3,5-dibromo-4-hydroxyphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide, 4,4'-(4,5,6,7-Tetrabromo-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromophenol] S,S-dioxide
M-Clarity™ quality level = MQ200
Tetrabromophenol Blue (TBPB) belongs to the group of sulfonephthalein acid-base indicators. It is employed in the potentiometric titration of the halogens with Hg₂(NO₃)₂. In addition, it has been used as a dye indicator in urine dipstick test to detect proteinuria. In this assay, with increasing concentration of urinary protein, TBPB sequentially changes colour from pale green to blue. Binding of TBPB to proteins is dependent on pH.
It is also used a diagnostic assay manufacturing, hematology, histology.
Formula:
C₁₉H₆Br₈O₅S MW: 985,55 g/mol Melting Pt: 204 °C Storage Temperature: Room Temperature |
MDL Number:
MFCD00005876 CAS Number: 4430-25-5 EINECS: 224-622-9 |
Specification Test Results
Appearance (Form) | Powder or Chunks |
Infrared spectrum | Conforms to Structure |
Wavelength | 606 - 616 nm |
Extinction coefficient | ≥55000 |
Purity (HPLC) | ≥75.0 % |
Visual Interval pH 3.0 Green | Pass |
Visual Interval pH 4.6 Royal Blue | Pass |
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