Thymolphthalein
Also known as: Thymolphthalein solid, Thymol phthalein, TP, Dithymolphthalide, 3,3-Bis(4-hydroxy-2-methyl-5-isopropylphenyl)phthalide, 3,3-Bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-1(3H)-isobenzofuranone, 3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)-2-benzofuran-1(3H)-one, 5',5''-Diisopropyl-2',2''-dimethylphenolphthalein, Thymolphthalein indicator, Thymolphthalein for analysis ACS
Thymolphthalein (CAS 125-20-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C28H30O4 and a molecular weight of 430.535 g/mol. Key properties include a melting point of 251-253 °C(lit.), a boiling point of 571.6±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 187.5±23.6 °C. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 125-20-2
- Jingsj CID
- J-38254-2
- Molecular Formula
- C28H30O4
- Molecular Weight
- 430.535 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 | 251-253 °C(lit.) |
|---|---|
| Boiling Point | 571.6±50.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 187.5±23.6 °C |
| Exact Mass | 430.214417 |
| PSA | 66.76000 |
| LogP | 6.23 |
| Vapor Pressure | 0.0±1.6 mmHg at 25°C |
| Refractive Index | 1.613 |
| Additional Property | insoluble |
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 Thymolphthalein?
The CAS number of Thymolphthalein is 125-20-2.
What are the molecular formula and molecular weight of Thymolphthalein?
Thymolphthalein has molecular formula C28H30O4 and molecular weight 430.535 g/mol.
Which suppliers offer Thymolphthalein?
1 supplier(s) listed; request a quote for pricing.
What are the upstream and downstream products of Thymolphthalein?
For Thymolphthalein, Upstream Products: Phthalic anhydride, Thymol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Thymolphthalein (CAS 125-20-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38254-2 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.