Molekula Bromophenol Blue
Specification & product details.
Bromophenol Blue is a pH indicator commonly used in biochemical assays and electrophoresis to monitor pH changes and track molecular migration.
CAS number: 115-39-9
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Specifications
| Property | Value |
| Appearance | Powder |
| Loss on Drying | < 1% (110°C) |
| Storage Temperature | +20 ° C |
| Solubility | 0.1% (95% Ethanol): Clear solution |
| Maximum Absoprtion | Wavelength of maximum absorption(pH 3.1) λ1 max: 434-439 nm, Wavelength of maximum absorption (pH 4.6) λ2 max: 590-593 nm |
| Absorptivity | Absorptivity (A1%/1cm at pH 3.1, at λ1 max): 350-385, Absorptivity (A1%/1cm at pH 4.6, at λ2 max): 940-1000 |
| Transition Range | pH 3.1 - 4.6 Greenish Yellow–Blue Violet |
| Loss on Drying (110°C, 1hr) | 0.89% |
| Transition Range pH 3.0-4.6 | Greenish yellow |
| Absorptivity (E1% 1CM CELL pH 3.3) @ 436nm | 363 |
| Absorptivity (E1% 1cm cell pH 4.6) @ 591nm | 995 |
| Solubility (0.1% EtOH) | Clear yellow solution |
Storage & handling
| Property | Value |
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
| Solubility (other solvents) | Soluble in acetic acid |
| pKa | pKa = 4 |
Identification
| Property | Value |
| SKU | 14572165 |
| CAS Number | 115-39-9 |
| IUPAC Name | 2,6-dibromo-4-\[3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl\]phenol |
| EC Number | 204-086-2 |
| Molecular Formula | C19H10Br4O5S |
| Molecular Weight | 669.96 |
| Exact Mass | 669.6942 |
| SMILES | C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br |
| InChIKey | UDSAIICHUKSCKT-UHFFFAOYSA-N |
| InChI | InChI=1S/C19H10Br4O5S/c20-12-5-9(6-13(21)17(12)24)19(10-7-14(22)18(25)15(23)8-10)11-3-1-2-4-16(11)29(26,27)28-19/h1-8,24-25H |
| PubChem CID | 8272 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29349990 |
| Tariff Code | 2934999090 |
Safety & GHS
Detailed safety information available in the SDS — see Documents below.
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Alternative names
3,3',5,5'-Tetrabromophenolsulfonphthalein; 3',3'',5',5''-Tetrabromophenolsulfonephthalein; 3',3'',5',5''-Tetrabromophenolsulfophthalein; Albutest; Blue, Bromophenol; Blue, Bromphenol; Blue, Tetrabromophenol; BROMPHENOL BLUE; Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo)-, S,S-dioxide; Tetrabromphenol Blue
Product documentation
Product specification PDF. Batch-specific certificates of analysis and safety data sheets are available on request.
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