The Sigma-Aldrich catalog lists 3 grades and pack sizes of alpha-Naphtholphthalein (CAS 596-01-0). Pick the code you need and request a quote for price and lead time from Klar Chem.
| CAS | 596-01-0 |
|---|---|
| Molecular formula | C28H18O4 |
| Molecular weight | 418.45 g/mol |
| IUPAC name | 3,3-bis(4-hydroxynaphthalen-1-yl)-2-benzofuran-1-one |
| Synonyms | Naphtholphthalein · 3,3-Bis(4-hydroxy-1-naphthyl)phthalide · 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-1-naphthalenyl)- · 2QEG1706NN · RefChem:555892 · a-naphtholphthalein |
Irritant
⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).
| Brand | Product / grade | Code | |
|---|---|---|---|
| Sigma | A-NAPHTHOLPHTHALEIN PRACTICAL GRADE | N8257-10G N8257-1G N8257-5G |
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