alpha-Naphtholphthalein
Also known as: 1-Naphtholphthalein, 3,3-bis(4-hydroxynaphthalen-1-yl)-2-benzofuran-1-one, 3,3'-bis(4-hydroxy-1-naphthyl)-1(3H)-isobenzofuranone, α-Naphtholphthalein indicator
alpha-Naphtholphthalein (CAS 596-01-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C28H18O4 and a molecular weight of 418.44000 g/mol. Key properties include a melting point of 238-240 °C(lit.), a boiling point of 705.6ºC at 760 mmHg, a density of 1.404 g/cm3 and a flash point of 247ºC. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 596-01-0
- Jingsj CID
- J-30029-8
- Molecular Formula
- C28H18O4
- Molecular Weight
- 418.44000 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 238-240 °C(lit.) |
|---|---|
| Boiling Point | 705.6ºC at 760 mmHg |
| Density | 1.404 g/cm3 |
| Flash Point | 247ºC |
| Exact Mass | 418.12100 |
| PSA | 66.76000 |
| LogP | 5.86650 |
| Refractive Index | 1.769 |
Customs & Trade Information
| HS Code | 2932209090 |
|---|---|
| Summary | 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of alpha-Naphtholphthalein?
The CAS number of alpha-Naphtholphthalein is 596-01-0.
What are the molecular formula and molecular weight of alpha-Naphtholphthalein?
alpha-Naphtholphthalein has molecular formula C28H18O4 and molecular weight 418.44000 g/mol.
Which suppliers offer alpha-Naphtholphthalein?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of alpha-Naphtholphthalein?
For alpha-Naphtholphthalein, Upstream Products: Phthalic anhydride, 1-Naphthol, Phthaloyl chloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "alpha-Naphtholphthalein (CAS 596-01-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30029-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.