Deliver to
United Kingdom
Order number: 596-01-0
Part number: AC100020342
1-Naphtholphthalein is a professionally handled substance with documented safety properties. Its molecular formula is C28H18O4, with a molecular weight of 418.4. This compound belongs to the class of organic compounds containing both naphthalene and phthalate groups. As a pH indicator, it exhibits pink coloration in acidic solutions and yellow in basic ones.
| Name | Value | |
|---|---|---|
| WGK | : | 1 |
| EG-Nr. | : | 209-875-5 |
| CAS No. | : | 596-01-0 |
| Molar mass (M) | : | 418,45 g/mol |
| Colour conversion | : | pink - blue |
| Empirical formula | : | C28H18O4 |
| Absorption maximum | : | 648 – 654 nm (0,1 N NaOH) |
| Melting point (mp) | : | 240 °C |
| Transition range pH | : | 7,1 - 8,3 |
SPEZ-1H5A-EN
SDB-1H5A-AT-DE
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© 2026 Copyright. All Rights Reserved.
