| Description | α-Naphtholbenzein, also known as p-Naphtolbenzein, is a dye that serves as a pH indicator, exhibiting a color change from yellow at a pH of 0-8.2 to turquoise at a pH of 10. It is commonly employed in the sequential injection analysis technique for acid-base titrations [1]. |
| Synonyms | p-Naphtolbenzein |
| molecular weight | 374.43 |
| Molecular formula | C27H18O2 |
| CAS | 145-50-6 |
| Storage | keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |