Specifications
- Purity
- -
- Appearance
- Dark red powder
- Identity
- 1H-NMR
Properties
- Solvents
- DMSO, ethanol, methanol, water (insoluble)
- Melting Point
- 230-235 °C (lit.)
Available from stock
alpha-Naphtholbenzein
- SKU
- N0116
Category: Non Fluorescent Detection & Chromogene Detection
- Synonyms
- 4,4'-(alpha-Hydroxybenzylidene)di-1-naphthol , p-Naphtholbenzein , NSC 9862
- 145-50-6
- CAS-Number
- C27H18O2
- Molecular Formula
- 374.43
- Molecular Weight
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
- Shipping
- AMBIENT
- Short Term Storage
- RT
- Long Term Storage
- RT
- Handling Advice
- Protect from light and moisture.
- Use / Stability
- Stable for at least 2 years after receipt when stored at RT.
- Transportation
- Not dangerous goods
- Description
- α-Naphtholbenzein is a dye generally used as an acid-base indicated. The pH-indicator has a visual transition from yellow (pH0-8.2) to turquoise (pH10). It is often used during sequential injection analysis technique done for acid-base titrations. It also has been used for food storage, determining bacterial growth in packed food, detecting viable cells and detecting enzymes.
- Smiles
- OC1=CC=C(/C(C2=CC=CC=C2)=C3C=CC(C4=C/3C=CC=C4)=O)C5=C1C=CC=C5
- InChi Key
- VDDWRTZCUJCDJM-PNHLSOANSA-N
- References
- (1) T. Higuchi, et al., Anal. Chem. 28, 1120 (1956) , (2) M. Silla, et al., Talanta 52.1, 91 (2000)
- InChi
- InChI=1S/C27H18O2/c28-25-16-14-23(19-10-4-6-12-21(19)25)27(18-8-2-1-3-9-18)24-15-17-26(29)22-13-7-5-11-20(22)24/h1-17,28H/b27-24-
α-Naphtholbenzein is a dye generally used as an acid-base indicated. The pH-indicator has a visual transition from yellow (pH0-8.2) to turquoise (pH10). It is often used during sequential injection analysis technique done for acid-base titrations. It also has been used for food storage, determining bacterial growth in packed food, detecting viable cells and detecting enzymes.
Additional information
| Synonyms | 4,4'-(alpha-Hydroxybenzylidene)di-1-naphthol, p-Naphtholbenzein, NSC 9862 |
|---|---|
| Purity | – |
| Appearance | Dark red powder |
| CAS-Number | 145-50-6 |
| Molecular Formula | C27H18O2 |
| Molecular Weight | 374.43 |
| Identity | 1H-NMR |
| Solvents | DMSO, ethanol, methanol, water (insoluble) |
| Melting Point | 230-235 °C (lit.) |
| Smiles | OC1=CC=C(/C(C2=CC=CC=C2)=C3C=CC(C4=C/3C=CC=C4)=O)C5=C1C=CC=C5 |
| InChi Key | VDDWRTZCUJCDJM-PNHLSOANSA-N |
| Shipping | AMBIENT |
| Short Term Storage | RT |
| Long Term Storage | RT |
| Handling Advice | Protect from light and moisture. |
| Use / Stability | Stable for at least 2 years after receipt when stored at RT. |
| Transportation | Not dangerous goods |
| References | (1) T. Higuchi, et al., Anal. Chem. 28, 1120 (1956), (2) M. Silla, et al., Talanta 52.1, 91 (2000) |
| InChi | InChI=1S/C27H18O2/c28-25-16-14-23(19-10-4-6-12-21(19)25)27(18-8-2-1-3-9-18)24-15-17-26(29)22-13-7-5-11-20(22)24/h1-17,28H/b27-24- |
| Quantity | 10 g, 50 g, Bulk |
