Phenolphthalein disodium salt
酚酞二钠盐
Also known as: Disodium phenolphthaleinate, 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone disodium salt, 3,3-Bis(p-hydroxyphenyl)phthalide disodium salt, 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, sodium salt (1:2), PHENOLPHTHALEIN DISODIUM SALT
Phenolphthalein disodium salt (CAS 518-51-4) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C20H12Na2O4 and a molecular weight of 362.28600 g/mol. It is also known as Disodium phenolphthaleinate, 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone disodium salt and 3,3-Bis(p-hydroxyphenyl)phthalide disodium salt. Key properties include a melting point of >250°C, a boiling point of 595.8ºC at 760 mmHg and a flash point of 328.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 518-51-4
- Jingsj CID
- J-18355-2
- Molecular Formula
- C20H12Na2O4
- Chinese Name
- 酚酞二钠盐
- Molecular Weight
- 362.28600 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >250°C |
|---|---|
| Boiling Point | 595.8ºC at 760 mmHg |
| Flash Point | 328.1ºC |
| Exact Mass | 362.05300 |
| PSA | 80.26000 |
| LogP | 2.69090 |
| Appearance | Powder |
| Additional Property | Solubility Soluble in water, ethanol |
Frequently Asked Questions
What is the CAS number of Phenolphthalein disodium salt?
The CAS number of Phenolphthalein disodium salt is 518-51-4.
What are the molecular formula and molecular weight of Phenolphthalein disodium salt?
Phenolphthalein disodium salt has molecular formula C20H12Na2O4 and molecular weight 362.28600 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phenolphthalein disodium salt (CAS 518-51-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18355-2 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.