Tetrabromophenol Blue
ALDRICH/199311 - Dye content 75 %
Synonym: 3,3′,3″,4,5,5′,5″,6-Octabromophenolsulfonphthalein
CAS Number: 4430-25-5
Empirical Formula (Hill Notation): C19H6Br8O5S
Molecular Weight: 985.54
EC Number: 224-622-9
MDL Number: MFCD00005876
Linear Formula: C19H6Br8O5S
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 199311-1G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 199311-5G
| ε (extinction coefficient) | ≥55000 at 606-616 nm in ethanol and water |
| λmax | 388 nm (2nd) |
| 605 nm | |
| application(s) | diagnostic assay manufacturing hematology histology |
| assay | ≥75.0% (HPLC) |
| composition | Dye content, 75% |
| form | powder |
| InChI | 1S/C19H6Br8O5S/c20-7-1-5( |
| InChI key | QPMIVFWZGPTDPN-UHFFFAOYSA |
| mp | 204 °C (dec.) (lit.) |
| Quality Level | 200  |
| SMILES string | Oc1c(Br)cc(cc1Br)C2(OS(=O |
| storage temp. | room temp |
| Biochem/physiol Actions: | 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 color from pale green to blue. Binding of TBPB to proteins is dependent on pH. |
| Packaging: | 1, 5 g in glass bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥75.0% (HPLC) |
| mp | 204 °C (dec.) (lit.) |
| Storage Temp. | room temp |
| UNSPSC | 12171500 |