Specifications
- Purity
- ≥95% (Dye content)
- Appearance
- Red to brown powder
Properties
- Solvents
- Soluble in ethanol. Sparingly soluble in aqueous buffer.
- Melting Point
- 230 °C (decomposition)
- Boiling Point
- 586.80 °C
Available from stock
Bromphenol red
- SKU
- B0050
Category: Non Fluorescent Detection & Chromogene Detection
- Synonyms
- Bromophenol red, 3',3''-Dibromophenolsulfonphthalein, BPR
- 2800-80-8
- CAS-Number
- C19H12Br2O5S
- Molecular Formula
- 512.17
- Molecular Weight
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
- Shipping
- AMBIENT
- Short Term Storage
- +4°C
- Long Term Storage
- +4°C
- Handling Advice
- Protect from light and moisture.
- Use / Stability
- Stable for at least 2 years after receipt when stored at +4°C.
- Precautionary statements
- P261, P262
- Transportation
- Not dangerous goods
- Description
- Bromophenol Red is a sulfonephthalein pH indicator widely used in analytical chemistry, biochemistry, and laboratory research. It undergoes a distinct color transition from yellow to red over a pH range of 5.2-6.8, making it suitable for monitoring mildly acidic to near-neutral solutions. The dye exhibits an absorbance maximum at approximately 433 nm in its acidic form and 558 nm in its basic form, enabling both visual and spectrophotometric pH measurements. Spectral Data: ?max=574 nm. Bromophenol Red is commonly used in acid-base titrations, indicator formulations, and analytical assays. Bromophenol red (sultone form) binds to lysozyme and inhibits its activity against the bacterial cell wall, but not the polysaccharide component of peptidoglycan.
- Smiles
- C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C=C3)O)Br)C4=CC(=C(C=C4)O)Br
- InChi Key
- OYCLSQDXZMROJK-UHFFFAOYSA-N
- References
- (1) G. Krishnamoorthy, et al., Biopolym. 18, 1937 (1979) , (2) V.M. Madhusudan, Protein Eng. 5, 399 (1992) , (3) X. Yu, et al., Talanta 148, 264 (2016)
- InChi
- InChI=1S/C19H12Br2O5S/c20-14-9-11(5-7-16(14)22)19(12-6-8-17(23)15(21)10-12)13-3-1-2-4-18(13)27(24,25)26-19/h1-10,22-23H
Bromophenol Red is a sulfonephthalein pH indicator widely used in analytical chemistry, biochemistry, and laboratory research. It undergoes a distinct color transition from yellow to red over a pH range of 5.2-6.8, making it suitable for monitoring mildly acidic to near-neutral solutions. The dye exhibits an absorbance maximum at approximately 433 nm in its acidic form and 558 nm in its basic form, enabling both visual and spectrophotometric pH measurements. Spectral Data: ?max=574 nm. Bromophenol Red is commonly used in acid-base titrations, indicator formulations, and analytical assays. Bromophenol red (sultone form) binds to lysozyme and inhibits its activity against the bacterial cell wall, but not the polysaccharide component of peptidoglycan.
Additional information
| Synonyms | Bromophenol red, 3',3''-Dibromophenolsulfonphthalein, BPR |
|---|---|
| Purity | ≥95% (Dye content) |
| Appearance | Red to brown powder |
| CAS-Number | 2800-80-8 |
| Molecular Formula | C19H12Br2O5S |
| Molecular Weight | 512.17 |
| Solvents | Soluble in ethanol. Sparingly soluble in aqueous buffer. |
| Melting Point | 230 °C (decomposition) |
| Boiling Point | 586.80 °C |
| Smiles | C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C=C3)O)Br)C4=CC(=C(C=C4)O)Br |
| InChi Key | OYCLSQDXZMROJK-UHFFFAOYSA-N |
| Shipping | AMBIENT |
| Short Term Storage | +4°C |
| Long Term Storage | +4°C |
| Handling Advice | Protect from light and moisture. |
| Use / Stability | Stable for at least 2 years after receipt when stored at +4°C. |
| Precautionary statements | P261, P262 |
| Transportation | Not dangerous goods |
| References | (1) G. Krishnamoorthy, et al., Biopolym. 18, 1937 (1979), (2) V.M. Madhusudan, Protein Eng. 5, 399 (1992), (3) X. Yu, et al., Talanta 148, 264 (2016) |
| InChi | InChI=1S/C19H12Br2O5S/c20-14-9-11(5-7-16(14)22)19(12-6-8-17(23)15(21)10-12)13-3-1-2-4-18(13)27(24,25)26-19/h1-10,22-23H |
| Quantity | 5 g, Bulk |
