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Chemodex
α-Naphtholbenzein
81
CHF
CHF 81.00
In stock
CDX-N0116-G01010 gCHF 81.00
CDX-N0116-G05050 gCHF 244.00
| Product Details | |
|---|---|
| Synonyms | 4,4'-(α-Hydroxybenzylidene)di-1-naphthol; p-Naphtholbenzein; NSC 9862 |
| Product Type | Chemical |
| Properties | |
| Formula | C27H18O2 |
| MW | 374.43 |
| CAS | 145-50-6 |
| Source/Host Chemicals | Synthetic |
| Appearance | Dark red powder. |
| Solubility | Soluble in ethanol or methanol. Insoluble in water. |
| Identity | Determined by 1H-NMR. |
| Declaration | Manufactured by Chemodex. |
| Other Product Data |
Click here for Original Manufacturer Product Datasheet |
| InChi Key | VDDWRTZCUJCDJM-PNHLSOANSA-N |
| Smiles | OC1=CC=C(/C(C2=CC=CC=C2)=C3C=CC(C4=C/3C=CC=C4)=O)C5=C1C=CC=C5 |
| Shipping and Handling | |
| Shipping | AMBIENT |
| Short Term Storage | +20°C |
| Long Term Storage | +20°C |
| Handling Advice | Protect from light and moisture. |
| Use/Stability | Stable for at least 2 years after receipt when stored at RT. |
| Documents | |
| MSDS | Inquire |
| Product Specification Sheet | |
| Datasheet |
 Download PDF |
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.
Product References
(1) T. Higuchi, et al.; Anal. Chem. 28, 1120 (1956) | (2) M. Silla, et al.; Talanta 52.1, 91 (2000)