Phenolphthalein
Also known as: .alpha, alpha.-Di(p-hydroxyphenyl)phthalide, 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, 1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)-, 2,2-bis(p-hydroxyphenyl)phthalide, 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofurunone, 3,3-Bis(4-hydroxyphenyl)-2-benzofuran-1(3H)-one, 3,3-bis(4-hydroxyphenyl)-1(3h)-isobenzofuranon, 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one, 5-18-04-00188 (Beilstein Handbook Reference), Chocolax, Colax, EINECS 201-004-7, Evac-Q-Kit, Evac-Q-Kwik, Evac-Q-Tabs, Evac-U-Gen, Evac-V-Lax, Ex-Lax, Feen-A-Mint Laxative Mints, MFCD00005913
Phenolphthalein (CAS 77-09-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C20H14O4 and a molecular weight of 318.323 g/mol. Key properties include a melting point of 258-263 °C, a boiling point of 557.8±50.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 206.5±23.6 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H319 — Causes serious eye irritation and H341 — Suspected of causing genetic defects. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 77-09-8
- Jingsj CID
- J-36017-7
- Molecular Formula
- C20H14O4
- Molecular Weight
- 318.323 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 | 258-263 °C |
|---|---|
| Boiling Point | 557.8±50.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 206.5±23.6 °C |
| Exact Mass | 318.089203 |
| PSA | 66.76000 |
| LogP | 2.63 |
| Vapor Pressure | 0.0±1.6 mmHg at 25°C |
| Refractive Index | 1.693 |
| Additional Property | <0.1 g/100 mL |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H319 — Causes serious eye irritation
- H341 — Suspected of causing genetic defects
- H350 — May cause cancer
Activity & Biological Data
| Additional Information | [1]. Fleischmann C, et al. Color indicator for supramolecular polymer chemistry: phenolphthalein-containing thermo- and pH-sensitive N-(Isopropyl)acrylamide copolymers and β-cyclodextrin complexation. Macromol Rapid Commun. 2013 Jul 12;34(13):1085-9. |
|---|
Customs & Trade Information
| HS Code | 29322910 |
|---|
Frequently Asked Questions
What is the CAS number of Phenolphthalein?
The CAS number of Phenolphthalein is 77-09-8.
What are the molecular formula and molecular weight of Phenolphthalein?
Phenolphthalein has molecular formula C20H14O4 and molecular weight 318.323 g/mol.
Which suppliers offer Phenolphthalein?
1 supplier(s) listed; request a quote for pricing.
Is Phenolphthalein hazardous?
Phenolphthalein has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H319 — Causes serious eye irritation; H341 — Suspected of causing genetic defects.
What are the upstream and downstream products of Phenolphthalein?
For Phenolphthalein, Upstream Products: Phthalic anhydride, Phenol, 2-(4-Hydroxybenzoyl)benzoic acid; Downstream Products: 3-aminopropanethiol, 2,4,6-Triiodophenol, Phenol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phenolphthalein (CAS 77-09-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36017-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.